JP3222932B2 - Non-aqueous battery - Google Patents
Non-aqueous batteryInfo
- Publication number
- JP3222932B2 JP3222932B2 JP15587892A JP15587892A JP3222932B2 JP 3222932 B2 JP3222932 B2 JP 3222932B2 JP 15587892 A JP15587892 A JP 15587892A JP 15587892 A JP15587892 A JP 15587892A JP 3222932 B2 JP3222932 B2 JP 3222932B2
- Authority
- JP
- Japan
- Prior art keywords
- battery
- positive electrode
- conductive agent
- powder
- negative electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000006258 conductive agent Substances 0.000 claims description 22
- 239000000843 powder Substances 0.000 claims description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 18
- 239000000203 mixture Substances 0.000 claims description 12
- 230000000052 comparative effect Effects 0.000 description 9
- 239000006230 acetylene black Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 229910052744 lithium Inorganic materials 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- -1 polytetrafluoroethylene Polymers 0.000 description 4
- 229910003481 amorphous carbon Inorganic materials 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 239000007772 electrode material Substances 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 229910044991 metal oxide Inorganic materials 0.000 description 3
- 150000004706 metal oxides Chemical class 0.000 description 3
- 239000011255 nonaqueous electrolyte Substances 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
- 239000007774 positive electrode material Substances 0.000 description 3
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000002033 PVDF binder Substances 0.000 description 2
- 239000011149 active material Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000003575 carbonaceous material Substances 0.000 description 2
- 239000010406 cathode material Substances 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 description 2
- 239000012046 mixed solvent Substances 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XMWRBQBLMFGWIX-UHFFFAOYSA-N C60 fullerene Chemical compound C12=C3C(C4=C56)=C7C8=C5C5=C9C%10=C6C6=C4C1=C1C4=C6C6=C%10C%10=C9C9=C%11C5=C8C5=C8C7=C3C3=C7C2=C1C1=C2C4=C6C4=C%10C6=C9C9=C%11C5=C5C8=C3C3=C7C1=C1C2=C4C6=C2C9=C5C3=C12 XMWRBQBLMFGWIX-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910000733 Li alloy Inorganic materials 0.000 description 1
- 229910012820 LiCoO Inorganic materials 0.000 description 1
- 229910012851 LiCoO 2 Inorganic materials 0.000 description 1
- 229910013870 LiPF 6 Inorganic materials 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- GOPYZMJAIPBUGX-UHFFFAOYSA-N [O-2].[O-2].[Mn+4] Chemical class [O-2].[O-2].[Mn+4] GOPYZMJAIPBUGX-UHFFFAOYSA-N 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 229910003472 fullerene Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000001989 lithium alloy Substances 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 229910052976 metal sulfide Inorganic materials 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 150000003346 selenoethers Chemical class 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/624—Electric conductive fillers
- H01M4/625—Carbon or graphite
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は非水系電池に係わり、特
に作動電圧の低下が小さく、負荷特性に優れた非水系電
池を得ることを目的とした導電剤の改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-aqueous battery, and more particularly to an improvement in a conductive agent for obtaining a non-aqueous battery having a small decrease in operating voltage and excellent load characteristics.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】非水系
電池において、導電性の良くない金属酸化物などを電極
材料として使用する場合、当該電極材料に導電剤を添加
して導電性を向上させることが行われている。2. Description of the Related Art In a non-aqueous battery, when a metal oxide having poor conductivity is used as an electrode material, a conductive agent is added to the electrode material to improve the conductivity. That is being done.
【０００３】而して、従来、導電剤としては、アセチレ
ンブラック、カーボンブラック等の無定形炭素粉末、黒
鉛粉末、金属粉などが使用されている。Conventionally, amorphous carbon powder such as acetylene black and carbon black, graphite powder, metal powder and the like have been used as the conductive agent.
【０００４】しかしながら、無定形炭素粉末や黒鉛粉末
は安定ではあるが導電性がさほど高くなく、また金属粉
はその本来の導電性はかなり高いが酸化されて導電性の
低い金属酸化物となり易いためさほど高い導電性を発現
しない。[0004] However, amorphous carbon powder and graphite powder are stable but not very conductive, and metal powder has a very high intrinsic conductivity but is easily oxidized into a metal oxide having low conductivity. Does not exhibit so high conductivity.
【０００５】このように導電性の未だ充分でない導電剤
が使用されていたため、従来の非水系電池には、作動電
圧の低下が大きく、また負荷特性が未だ充分でないとい
う問題があった。[0005] As described above, since the conductive agent whose conductivity is not sufficient is used, the conventional non-aqueous battery has a problem that the operating voltage is greatly reduced and the load characteristics are not yet sufficient.
【０００６】本発明は、この問題を解消するべくなされ
たものであって、その目的とするところは、より導電性
の高い導電剤を使用することにより、作動電圧の低下が
少なく、負荷特性に優れた非水系電池を提供するにあ
る。The present invention has been made to solve this problem. It is an object of the present invention to reduce the operating voltage by using a conductive agent having higher conductivity and to improve the load characteristics. It is to provide an excellent non-aqueous battery.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するため
の本発明に係る非水系電池（以下、「本発明電池」と称
する。）は、正極及び／又は負極の導電剤として球状閉
殻炭素分子粉末が正極及び／又は負極の導電剤として球
状閉殻炭素分子粉末が正極及び／又は負極の合剤中に３
〜３０重量％の比率で配合されてなる。A non-aqueous battery according to the present invention (hereinafter referred to as "battery of the present invention") for achieving the above object has a spherical closed shell carbon molecule as a conductive agent for a positive electrode and / or a negative electrode. The powder is used as a conductive agent for the positive electrode and / or the negative electrode.
-30% by weight .
【０００８】本発明電池においては、正極及び／又は負
極の導電剤として、従来の無定形炭素粉末等の導電剤に
比し導電性の高い球状閉殻炭素分子粉末が使用される。In the battery of the present invention, a spherical closed-shell carbon molecular powder having higher conductivity than a conventional conductive agent such as amorphous carbon powder is used as a conductive agent for the positive electrode and / or the negative electrode.
【０００９】かかる球状閉殻炭素分子としては、Ｃ60、
Ｃ70等に代表されるフラーレンが挙げられる。Such spherical closed shell carbon molecules include C 60 ,
Fullerene represented by C 70 and the like.
【００１０】本発明における球状閉殻炭素分子の正極合
剤又は負極合剤中への配合比率は、３〜３０重量％であ
る。その配合比率が３重量％未満の場合は、充分な導電
性が得られにくく、また３０重量％を越えた場合は、増
量に応じた導電性向上効果が得られないばかりでなく電
池容量の低下を招く。 [0010] Blend ratio into the positive electrode mixture or negative electrode mixture of the spherical closed shell carbon molecules in the present invention is 3 to 30 wt%. When the compounding ratio is less than 3% by weight, it is difficult to obtain sufficient conductivity, and when it exceeds 30% by weight, not only the effect of improving the conductivity according to the increase is not obtained, but also the battery capacity decreases. the rather invited.
【００１１】上記球状閉殻炭素分子粉末は、一種単独を
使用してもよく、必要に応じて二種以上を併用してもよ
く、また球状閉殻炭素分子粉末が高価であることに鑑
み、電圧特性や負荷特性などが実用上問題となる程低下
しない範囲で、従来のアセチレンブラック等の導電剤を
併用するようにしてもよい。The above spherical closed-shell carbon molecular powder may be used alone or in combination of two or more as necessary. In view of the fact that the spherical closed-shell carbon molecular powder is expensive, the voltage characteristics A conventional conductive agent such as acetylene black may be used together within a range in which the load characteristics and load characteristics do not deteriorate to a practical problem.
【００１２】従来の導電剤と併用する場合は、一般に球
状閉殻炭素分子粉末が導電剤中に、１０体積％以上含ま
れるようにすることが好ましい。When used in combination with a conventional conductive agent, it is generally preferable that the spherical closed shell carbon molecule powder be contained in the conductive agent in an amount of 10% by volume or more.
【００１３】本発明電池は、上述の如く、導電性がさほ
ど高くない導電剤が使用されていた従来の非水系電池の
電圧特性や負荷特性を向上させるために、導電剤とし
て、導電性の極めて高い球状閉殻炭素分子粉末が使用さ
れる点に特徴を有する。それゆえ、正負両極の導電剤以
外の材料、電解液溶質、セパレータなどの電池を構成す
る他の部材については、従来非水系電池用として使用さ
れ、或いは提案されている種々の材料を制限なく使用す
ることが可能である。[0013] As described above, the battery of the present invention uses a very conductive material as a conductive agent in order to improve the voltage characteristics and load characteristics of a conventional non-aqueous battery in which a conductive material having a low conductivity is used. It is characterized in that a high spherical closed shell carbon molecular powder is used. Therefore, for materials other than the conductive agent of the positive and negative electrodes, electrolyte solutes, and other members constituting the battery such as the separator, various materials conventionally used for non-aqueous batteries or proposed materials can be used without limitation. It is possible to
【００１４】正極材料（活物質）としては、金属酸化物
（ＭｎＯ2 、改質ＭｎＯ2 、重質化ＭｎＯ2 、Ｍｏ
Ｏ2 、ＣｕＯ、Ｃｒ2 Ｏ3 、ＣｒＯ3 、Ｖ2 Ｏ5 な
ど）；金属硫化物（ＦｅＳ、ＴｉＳ2 、又はＭｏＳ2 な
ど）；金属セレン化物（ＴｉＳｅ2 など）；クロム、マ
ンガン、鉄、コバルト及びニッケルよりなる群から選ば
れた少なくとも一種の金属とＬｉとの複合酸化物が例示
される。As the positive electrode material (active material), metal oxides (MnO 2 , modified MnO 2 , heavy MnO 2 , Mo
O 2 , CuO, Cr 2 O 3 , CrO 3 , V 2 O 5, etc .; metal sulfides (such as FeS, TiS 2 , or MoS 2 ); metal selenides (such as TiSe 2 ); chromium, manganese, iron, A composite oxide of Li and at least one metal selected from the group consisting of cobalt and nickel is exemplified.
【００１５】正極は、たとえば上記した正極材料を、球
状閉殻炭素分子粉末及びポリテトラフルオロエチレン
（ＰＴＦＥ）、ポリフッ化ビニリデン（ＰＶｄＦ）等の
結着剤と混練して正極合剤とした後、この正極合剤を集
電体としてのアルミニウムやステンレスなどからなる箔
やラス板（正極集電体）に圧延し、乾燥することにより
作製される。For the positive electrode, for example, the above positive electrode material is kneaded with a spherical closed shell carbon molecular powder and a binder such as polytetrafluoroethylene (PTFE) and polyvinylidene fluoride (PVdF) to form a positive electrode mixture. The positive electrode mixture is rolled into a foil or lath plate (positive electrode current collector) made of aluminum, stainless steel, or the like as a current collector, and dried.
【００１６】なお、球状閉殻炭素分子粉末は有機溶媒に
溶けるので、球状閉殻炭素分子粉末と正極材料とを有機
溶媒に混合してスラリーとした後、加熱して有機溶媒を
蒸散させるようにすれば、球状閉殻炭素分子粉末と正極
材料との均一な混合物が得られるので、導電性の高い、
すなわち内部抵抗の小さい電極を得る上で有利である。Since the spherical closed-shell carbon molecule powder is dissolved in an organic solvent, the spherical closed-shell carbon molecular powder and the cathode material are mixed with an organic solvent to form a slurry, and then heated to evaporate the organic solvent. Since a uniform mixture of spherical closed-shell carbon molecule powder and the cathode material can be obtained, high conductivity,
That is, it is advantageous in obtaining an electrode having a small internal resistance.
【００１７】負極材料としては、リチウム金属や、リチ
ウム合金、炭素材料などのリチウムを吸蔵放出可能な物
質が例示される。なお、炭素材料などの粉末材料は、こ
れをポリテトラフルオロエチレン等の結着剤と混練して
負極合剤として使用する。また、負極合剤についてもそ
の導電性を高めるべく、本発明における球状閉殻炭素分
子粉末を導電剤として添加配合するようにしてもよい。Examples of the negative electrode material include substances capable of inserting and extracting lithium, such as lithium metal, lithium alloy, and carbon material. A powder material such as a carbon material is kneaded with a binder such as polytetrafluoroethylene and used as a negative electrode mixture. In addition, the spherical closed-shell carbon molecule powder of the present invention may be added and blended as a conductive agent in order to enhance the conductivity of the negative electrode mixture.
【００１８】また、電解質についても、エチレンカーボ
ネート、ジメチルカーボネート又はこれらの混合溶媒に
ＬｉＰＦ6 やＬｉＣｌ4 等の溶質を溶かした溶液など、
種々の非水系電解質を用いることができる。The electrolyte may be ethylene carbonate, dimethyl carbonate, or a mixed solvent thereof in which a solute such as LiPF 6 or LiCl 4 is dissolved.
Various non-aqueous electrolytes can be used.
【００１９】[0019]
【作用】本発明電池においては、導電性が極めて高い球
状閉殻炭素分子粉末が正極及び／又は負極の導電剤とし
て使用されているので、当該球状閉殻炭素分子粉末が使
用された電極のＩＲドロップ（電極材料自体の内部抵抗
による電圧降下）が小さく、そのため分極が小さくな
る。In the battery of the present invention, since spherical closed-shell carbon molecule powder having extremely high conductivity is used as a conductive agent for the positive electrode and / or negative electrode, the IR drop of the electrode using the spherical closed-shell carbon molecule powder is used. The voltage drop due to the internal resistance of the electrode material itself is small, and therefore the polarization is small.
【００２０】[0020]
【実施例】以下、本発明を実施例に基づいてさらに詳細
に説明するが、本発明は下記実施例により何ら限定され
るものではなく、その要旨を変更しない範囲において適
宜変更して実施することが可能なものである。EXAMPLES Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited to the following Examples, and may be carried out by appropriately changing the scope of the present invention. Is possible.
【００２１】（実施例１）円筒型の非水系電池を作製し
た。Example 1 A cylindrical non-aqueous battery was manufactured.
【００２２】〔正極の作製〕活物質としてのＬｉＣｏＯ
2 と、導電剤としてのＣ70（球状閉殻炭素分子粉末）
と、結着剤としてのフッ素樹脂とを、重量比８５：１
０：５で混合して正極合剤を得た。この正極合剤を、正
極集電体としてのアルミニウム箔に圧延し、乾燥して正
極を作製した。[Preparation of positive electrode] LiCoO as active material
2 and C 70 (Spherical closed shell carbon molecular powder) as conductive agent
And a fluororesin as a binder in a weight ratio of 85: 1.
The mixture was mixed at 0: 5 to obtain a positive electrode mixture. This positive electrode mixture was rolled into an aluminum foil as a positive electrode current collector and dried to prepare a positive electrode.
【００２３】〔負極の作製〕圧延、打ち抜きによりリチ
ウム金属からなる負極を作製した。[Preparation of Negative Electrode] A negative electrode made of lithium metal was prepared by rolling and punching.
【００２４】〔非水系電解液の調製〕エチレンカーボネ
ートとジメチルカーボネートとの等体積混合溶媒に、Ｌ
ｉＰＦ6 を１モル／リットル溶かして電解液を調製し
た。[Preparation of Non-Aqueous Electrolyte] In a mixed solvent of ethylene carbonate and dimethyl carbonate in an equal volume,
iPF 6 was prepared an electrolytic solution dissolving 1 mol / liter.
【００２５】〔本発明電池ＢＡ１の作製〕以上の正負両
極及び電解液を用いて円筒型の本発明電池ＢＡ１を作製
した（電池寸法：直径１４．２ｍｍ；長さ５０．０ｍ
ｍ）。なお、セパレータとしてイオン透過性のポリプロ
ピレン製の微孔性薄膜を用いた。[Preparation of Battery BA1 of the Present Invention] A cylindrical battery BA1 of the present invention was prepared using the positive and negative electrodes and the electrolyte described above (battery dimensions: 14.2 mm in diameter; 50.0 m in length).
m). In addition, an ion-permeable polypropylene microporous thin film was used as the separator.
【００２６】図１は作製した電池ＢＡ１の断面図であ
り、同図に示す電池ＢＡ１は、正極１及び負極２、これ
ら両電極を離隔するセパレータ３、正極リード４、負極
リード５、正極外部端子６、負極缶７などからなる。正
極１及び負極２は非水電解液が注入されたセパレータ３
を介して渦巻き状に巻き取られた状態で負極缶７内に収
容されており、正極１は正極リード４を介して正極外部
端子６に、また負極２は負極リード５を介して負極缶７
に接続され、電池ＢＡ１内部で生じた化学エネルギーを
電気エネルギーとして外部へ取り出し得るようになって
いる。FIG. 1 is a sectional view of the battery BA1 produced. The battery BA1 shown in FIG. 1 has a positive electrode 1 and a negative electrode 2, a separator 3 separating these electrodes, a positive electrode lead 4, a negative electrode lead 5, and a positive external terminal. 6, a negative electrode can 7 and the like. The positive electrode 1 and the negative electrode 2 are separators 3 into which a non-aqueous electrolyte is injected.
The positive electrode 1 is accommodated in a negative electrode can 7 via a positive electrode lead 4, and the negative electrode 2 is accommodated in a negative electrode can 7 via a negative electrode lead 5.
And the chemical energy generated inside the battery BA1 can be taken out to the outside as electric energy.
【００２７】（比較例１）正極の作製において、導電剤
としてＣ70に代えてアセチレンブラックを同じ比率（１
０重量％）で使用したこと以外は、実施例１と同様にし
て、比較電池ＢＣ１を作製した。Comparative Example 1 In the preparation of the positive electrode, acetylene black was used in place of C 70 as the conductive agent at the same ratio (1).
Comparative battery BC1 was produced in the same manner as in Example 1 except that the comparative battery BC1 was used.
【００２８】（実施例２）正極の作製において、導電剤
としてＣ70に代えてＣ60（球状閉殻炭素分子粉末）を同
じ比率（１０重量％）で使用し、また正極活物質として
ＬｉＣｏＯ2 に代えて改質二酸化マンガン（三洋電機社
製、商品名「ＣＤＭＯ」）を使用したこと以外は、実施
例１と同様にして、本発明電池ＢＡ２を作製した。Example 2 In the preparation of the positive electrode, C 60 (spherical closed-shell carbon molecular powder) was used in the same ratio (10% by weight) instead of C 70 as the conductive agent, and LiCoO 2 was used as the positive electrode active material. A battery BA2 of the present invention was made in the same manner as in Example 1 except that modified manganese dioxide (trade name “CDMO” manufactured by Sanyo Electric Co., Ltd.) was used instead.
【００２９】（比較例２）正極の作製において、導電剤
としてＣ60に代えてアセチレンブラックを同じ比率（１
０重量％）で使用したこと以外は、実施例２と同様にし
て、比較電池ＢＣ２を作製した。Comparative Example 2 In the preparation of the positive electrode, acetylene black was used in place of C 60 as the conductive agent at the same ratio (1
Comparative battery BC2 was produced in the same manner as in Example 2 except that the battery was used at 0% by weight.
【００３０】（作動電圧特性）本発明電池ＢＡ１及び比
較電池ＢＣ１について２ｍＡで放電を行い、各電池の電
圧特性を調べた。なお、放電終止電圧を２．７Ｖとし
た。(Operating Voltage Characteristics) The battery BA1 of the present invention and the comparative battery BC1 were discharged at 2 mA, and the voltage characteristics of each battery were examined. The discharge end voltage was set to 2.7V.
【００３１】図２は、各電池の電圧特性を、縦軸に放電
時の電池電圧（Ｖ）を、また横軸に電池容量（ｍＡｈ）
をとって示したグラフである。同図より、本発明電池Ｂ
Ａ１は、比較電池ＢＣ１に比し、作動電圧が総じて高
く、作動電圧の低下が小さいことが分かる。FIG. 2 shows the voltage characteristics of each battery, the vertical axis represents the battery voltage (V) during discharging, and the horizontal axis represents the battery capacity (mAh).
FIG. As shown in FIG.
It can be seen that the operating voltage of A1 is generally higher than that of the comparative battery BC1, and the decrease of the operating voltage is smaller.
【００３２】（負荷特性）本発明電池ＢＡ２及び比較電
池ＢＣ２について、電流値を上げていった場合の各電流
値における電池容量を測定して、各電池の負荷特性を調
べた。(Load Characteristics) With respect to the battery BA2 of the present invention and the comparative battery BC2, the battery capacity at each current value when the current value was increased was measured, and the load characteristics of each battery were examined.
【００３３】図３は、各電池の負荷特性を、縦軸に電池
容量（ｍＡｈ）を、また横軸に電流値（Ａ）をとって示
したグラフである。同図より、本発明電池ＢＡ２は、比
較電池ＢＣ２に比し、高負荷放電の場合にも、電池容量
が大きいことが分かる。FIG. 3 is a graph showing the load characteristics of each battery, the battery capacity (mAh) on the vertical axis, and the current value (A) on the horizontal axis. From the figure, it can be seen that the battery BA2 of the present invention has a larger battery capacity even in the case of high-load discharge than the comparative battery BC2.
【００３４】叙上の実施例では本発明を円筒型電池に適
用する場合の具体例について説明したが、電池の形状に
特に制限はなく、本発明は扁平型、角型等、種々の形状
の非水系電池に適用し得るものであり、また一次電池で
あるか二次電池であるかについても問われない。In the above embodiment, a specific example in which the present invention is applied to a cylindrical battery has been described. However, the shape of the battery is not particularly limited, and the present invention is applicable to various shapes such as a flat type and a square type. It is applicable to non-aqueous batteries, and it does not matter whether the battery is a primary battery or a secondary battery.
【００３５】[0035]
【発明の効果】本発明に係る非水系電池では、正極及び
／又は負極の導電剤として導電性の極めて高い球状閉殻
炭素分子粉末が使用されているので、ＩＲドロップが小
さいため分極が小さく、このため作動電圧の低下が小さ
く、また負荷特性に優れるなど、本発明は優れた特有の
効果を奏する。In the non-aqueous battery according to the present invention, the spherical closed shell carbon molecule powder having extremely high conductivity is used as the conductive agent for the positive electrode and / or the negative electrode. Therefore, the present invention has excellent unique effects such as a small decrease in operating voltage and excellent load characteristics.
【図１】円筒型の本発明電池ＢＡ１の断面図である。FIG. 1 is a sectional view of a cylindrical battery BA1 of the present invention.
【図２】電圧特性図である。FIG. 2 is a voltage characteristic diagram.
【図３】負荷特性図である。FIG. 3 is a load characteristic diagram.
ＢＡ１ 電池 １ 正極 ２ 負極 ３ セパレータ BA1 Battery 1 Positive electrode 2 Negative electrode 3 Separator
───────────────────────────────────────────────────── フロントページの続き (72)発明者 西尾 晃治 大阪府守口市京阪本通２丁目18番地 三 洋電機株式会社内 (72)発明者 古川 修弘 大阪府守口市京阪本通２丁目18番地 三 洋電機株式会社内 (56)参考文献 特開 平５−314977（ＪＰ，Ａ) 特開 平５−290887（ＪＰ，Ａ) 特開 平５−275078（ＪＰ，Ａ) 特開 平４−190555（ＪＰ，Ａ) 特開 平５−101850（ＪＰ，Ａ) 特開 平４−26073（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) H01M 4/62 H01M 4/02 H01M 10/40 H01M 6/16 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Koji Nishio, the inventor 2-18-18 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (56) References JP-A-5-314977 (JP, A) JP-A-5-290887 (JP, A) JP-A-5-275078 (JP, A) JP-A-4-190555 ( JP, A) JP-A-5-101850 (JP, A) JP-A-4-26073 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) H01M 4/62 H01M 4/02 H01M 10/40 H01M 6/16
Claims (1)
殻炭素分子粉末が正極及び／又は負極の合剤中に３〜３
０重量％の比率で配合されていることを特徴とする非水
系電池。1. A spherical closed shell carbon molecule powder as a conductive agent for a positive electrode and / or a negative electrode is contained in the mixture of the positive electrode and / or the negative electrode in an amount of 3 to 3 times.
A non-aqueous battery characterized by being blended at a ratio of 0% by weight .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15587892A JP3222932B2 (en) | 1992-05-22 | 1992-05-22 | Non-aqueous battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15587892A JP3222932B2 (en) | 1992-05-22 | 1992-05-22 | Non-aqueous battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05325974A JPH05325974A (en) | 1993-12-10 |
| JP3222932B2 true JP3222932B2 (en) | 2001-10-29 |
Family
ID=15615484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15587892A Expired - Fee Related JP3222932B2 (en) | 1992-05-22 | 1992-05-22 | Non-aqueous battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3222932B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4161376B2 (en) * | 1996-07-30 | 2008-10-08 | ソニー株式会社 | Non-aqueous electrolyte secondary battery |
| US7879260B2 (en) | 2002-10-04 | 2011-02-01 | Mitsubishi Chemical Corporation | Additive for anode material for lithium secondary battery, anode material for lithium secondary battery, anode and lithium secondary battery using the anode material for lithium secondary battery |
| KR100733753B1 (en) * | 2002-10-04 | 2007-06-29 | 미쓰비시 가가꾸 가부시키가이샤 | Additive to negative electrode material for lithium secondary battery, negative electrode material for lithium secondary battery and, using the negative electrode material for lithium secondary battery, negative electrode and lithium secondary battery |
| KR100793659B1 (en) * | 2002-10-31 | 2008-01-10 | 미쓰비시 가가꾸 가부시키가이샤 | The positive electrode and lithium secondary battery using the additive of the positive electrode material for lithium secondary batteries, the positive electrode material for lithium secondary batteries, and this positive electrode material for lithium secondary batteries |
-
1992
- 1992-05-22 JP JP15587892A patent/JP3222932B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05325974A (en) | 1993-12-10 |
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