JPS63285866A - Nonaqueous secondary battery - Google Patents
Nonaqueous secondary batteryInfo
- Publication number
- JPS63285866A JPS63285866A JP62122301A JP12230187A JPS63285866A JP S63285866 A JPS63285866 A JP S63285866A JP 62122301 A JP62122301 A JP 62122301A JP 12230187 A JP12230187 A JP 12230187A JP S63285866 A JPS63285866 A JP S63285866A
- Authority
- JP
- Japan
- Prior art keywords
- negative electrode
- lithium
- porous body
- conductive porous
- lithium alloy
- 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.)
- Pending
Links
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 17
- 229910000733 Li alloy Inorganic materials 0.000 claims abstract description 14
- 239000001989 lithium alloy Substances 0.000 claims abstract description 14
- 239000011149 active material Substances 0.000 claims abstract description 8
- 239000010935 stainless steel Substances 0.000 claims abstract description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000010936 titanium Substances 0.000 claims abstract description 3
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract 4
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract 2
- 239000011733 molybdenum Substances 0.000 claims abstract 2
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract 2
- 229910052759 nickel Inorganic materials 0.000 claims abstract 2
- 229910052782 aluminium Inorganic materials 0.000 abstract description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052751 metal Inorganic materials 0.000 abstract description 5
- 239000002184 metal Substances 0.000 abstract description 5
- 239000004411 aluminium Substances 0.000 abstract 1
- 239000003792 electrolyte Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 229910000838 Al alloy Inorganic materials 0.000 description 6
- JFBZPFYRPYOZCQ-UHFFFAOYSA-N [Li].[Al] Chemical compound [Li].[Al] JFBZPFYRPYOZCQ-UHFFFAOYSA-N 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 5
- 239000000956 alloy Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 239000011255 nonaqueous electrolyte Substances 0.000 description 5
- 239000011148 porous material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- QXYJCZRRLLQGCR-UHFFFAOYSA-N dioxomolybdenum Chemical compound O=[Mo]=O QXYJCZRRLLQGCR-UHFFFAOYSA-N 0.000 description 2
- GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000011133 lead Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 229910052718 tin Inorganic materials 0.000 description 2
- 239000011135 tin Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 1
- 241001185311 Lyticum Species 0.000 description 1
- 239000006230 acetylene black Substances 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000006258 conductive agent Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- MHCFAGZWMAWTNR-UHFFFAOYSA-M lithium perchlorate Chemical compound [Li+].[O-]Cl(=O)(=O)=O MHCFAGZWMAWTNR-UHFFFAOYSA-M 0.000 description 1
- 229910001486 lithium perchlorate Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- NYPFJVOIAWPAAV-UHFFFAOYSA-N sulfanylideneniobium Chemical compound [Nb]=S NYPFJVOIAWPAAV-UHFFFAOYSA-N 0.000 description 1
- RCYJPSGNXVLIBO-UHFFFAOYSA-N sulfanylidenetitanium Chemical compound [S].[Ti] RCYJPSGNXVLIBO-UHFFFAOYSA-N 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
-
- 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
- H01M4/04—Processes of manufacture in general
- H01M4/0438—Processes of manufacture in general by electrochemical processing
- H01M4/0459—Electrochemical doping, intercalation, occlusion or alloying
- H01M4/0461—Electrochemical alloying
-
- 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
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
-
- 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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
-
- 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
- H01M4/64—Carriers or collectors
- H01M4/70—Carriers or collectors characterised by shape or form
- H01M4/72—Grids
- H01M4/74—Meshes or woven material; Expanded metal
-
- 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
- H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
- H01M2004/027—Negative electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
-
- 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
- H01M4/04—Processes of manufacture in general
- H01M4/0402—Methods of deposition of the material
- H01M4/0404—Methods of deposition of the material by coating on electrode collectors
-
- 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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
- H01M4/40—Alloys based on alkali metals
- H01M4/405—Alloys based on lithium
-
- 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
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/661—Metal or alloys, e.g. alloy coatings
-
- 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
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/669—Steels
-
- 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)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Cell Electrode Carriers And Collectors (AREA)
Abstract
Description
【発明の詳細な説明】
（イ）産業上の利用分野
本発明は二酸化モリブデン、五酸化バナジウム、チタン
或いはニオブの硫化物などの再充電可能な活物質よりな
る正極と、リチウムを活物質とする負極とを備えた非水
系二次電池に関するものである０
（ロ）従来の技術
この種二次電池は放電時に負極活物質であるリチウムが
イオンとなって溶解し、充電時にその逆反応で負極上に
金属リチウムとして電析する反応であるが、電析リチウ
ムは樹枝状に成長する傾向があり最終的に正極に達して
内部短絡を引起すという問題がある。[Detailed description of the invention] (a) Industrial application field The present invention comprises a positive electrode made of a rechargeable active material such as molybdenum dioxide, vanadium pentoxide, titanium or niobium sulfide, and a positive electrode made of lithium as the active material. 0 (b) Conventional technology In this type of secondary battery, lithium, which is the active material of the negative electrode, becomes ions and dissolves during charging, and the reverse reaction occurs when charging the negative electrode. Although this is a reaction in which metallic lithium is deposited on the surface of the metal, there is a problem in that the deposited lithium tends to grow in a dendritic form and eventually reaches the positive electrode, causing an internal short circuit.
このような不都合に対処するため、例えば特開昭５２−
５４２３号公報に開示されているリチウム−アルミニウ
ム合金のようにリチウム合金を負極活物質とすることが
提案されている。リチウムと合金を形成する金属として
はアルミニウムの他にマグネシウム、亜鉛、スズ、鉛な
どが挙げられる。リチウム合金の利点は次述の如くであ
る。即ち、リチウム単独の場合にはリチウムがイオンと
なって溶出すると負極表面が凹凸状となり、その後の充
電の際、リチウムが凸部に集中的に電析して樹枝状に成
長するのに対し、リチウム−アルミニウム合金の場合に
は充電時にリチウムが負極の基体となるアルミニウムと
合金を形成するように復元するためリチウムの樹枝状成
長が抑制されるためである。In order to deal with such inconveniences, for example,
It has been proposed to use a lithium alloy as a negative electrode active material, such as the lithium-aluminum alloy disclosed in Japanese Patent No. 5423. In addition to aluminum, examples of metals that form alloys with lithium include magnesium, zinc, tin, and lead. The advantages of lithium alloys are as follows. That is, in the case of lithium alone, when lithium is eluted as ions, the negative electrode surface becomes uneven, and during subsequent charging, lithium is deposited intensively on the convex parts and grows in a dendritic shape. This is because in the case of a lithium-aluminum alloy, lithium restores itself to form an alloy with aluminum, which serves as the base of the negative electrode, during charging, thereby suppressing dendritic growth of lithium.
（ハ）発明が解決しようとする問題点
負極をリチウム合金で構成したとしても、充放電の繰返
しにより合金が微細化し、負極から脱落して電池容量が
低下したり、又例えば扁平型電池において前記負極を負
極外部端子部材に接触圧により電気接続する場合には合
金の脱落により集電効果が低下して電池性能の劣化に至
る。(c) Problems to be Solved by the Invention Even if the negative electrode is made of a lithium alloy, repeated charging and discharging may cause the alloy to become fine and fall off from the negative electrode, resulting in a decrease in battery capacity. When the negative electrode is electrically connected to the negative external terminal member by contact pressure, the alloy falls off, reducing the current collection effect and leading to deterioration of battery performance.
に）問題点を解決するだめの手段
負極として導電性多孔体を埋設したリチウム合金を用い
る。2) As a final means of solving the problem, a lithium alloy with a conductive porous body embedded therein is used as the negative electrode.
（ホ）作 用
本発明による負極構造であれば、導電性多孔体の両側に
位置するリチウム合金が導電性多孔体の孔部を介して連
結され、導電性多孔体に強固に支持されることになるた
め、合金が負極から脱落するのを抑制しうる。(E) Function With the negative electrode structure according to the present invention, the lithium alloy located on both sides of the conductive porous body is connected through the pores of the conductive porous body and is firmly supported by the conductive porous body. Therefore, the alloy can be prevented from falling off from the negative electrode.
又、導電性多孔体の一部を延長し、その延出部を負極外
部端子部材に固着して電気接続することにより、別途リ
ード片を取付けることが不要となると共に、扁平型電池
においては接触圧で電気接続する場合に比して集電効果
の向上が計れる０（ホ）実施例
実施例１
第１図は円筒型非水電解液二次電池の縦断面図を示し、
（１）は本発明の要旨とする負極であって後述する手順
により作成したものである。（２）は正極であって活物
質である硫化チタン８０重量部に導電剤としてのアセチ
レンブラック１０重量部及び結着剤としてのフッ素樹脂
１０重量部を加え充分混合した後加圧成型したものであ
る。In addition, by extending a part of the conductive porous body and fixing the extended part to the negative electrode external terminal member for electrical connection, it becomes unnecessary to attach a separate lead piece, and in flat batteries, it is not necessary to attach a lead piece. Embodiment Example 1 Figure 1 shows a longitudinal cross-sectional view of a cylindrical non-aqueous electrolyte secondary battery, in which the current collection effect is improved compared to the case where electrical connection is made by pressure.
(1) is a negative electrode which is the gist of the present invention, and was produced by the procedure described below. (2) is a positive electrode, which is made by adding 10 parts by weight of acetylene black as a conductive agent and 10 parts by weight of fluororesin as a binder to 80 parts by weight of titanium sulfide as an active material, mixing thoroughly, and then press-molding. be.
これら負極（１）及び正極（２）はポリプロピレン多孔
膜よりなるセパレータ（３）を介して巻回され負極端子
兼用の外装罐（４）に収納されている。（５）は絶縁バ
ッキング（６）を介して外装罐（４）の開口部に装着さ
れている正極端子兼用のキャップである。These negative electrodes (1) and positive electrodes (2) are wound around a separator (3) made of a porous polypropylene membrane and housed in an exterior can (4) which also serves as a negative electrode terminal. (5) is a cap that also serves as a positive electrode terminal and is attached to the opening of the exterior can (4) via an insulating backing (6).
而して、負極はステンレス製パンチング板より・Ｆ支
なる導電、多孔体（７）を一対のアルミニウム板で挾持
したるものをプロピレンカーボネートと１２ジメトキシ
エタンとの混合溶媒に過塩素酸リチウムを１モル／ｌ溶
解した電解液中に浸漬し、金属リチウム板を対極として
電流密度α５ｍＡ／−で電気化学的合金化処理を施し、
リチクムーアルミニウム合金を形成したものである。The negative electrode was made from a stainless steel punched plate.The conductive porous body (7) supported by F was sandwiched between a pair of aluminum plates, and one portion of lithium perchlorate was added to a mixed solvent of propylene carbonate and 12 dimethoxyethane. It was immersed in an electrolyte solution containing mol/l and subjected to electrochemical alloying treatment at a current density of α5 mA/- using a metal lithium plate as a counter electrode.
It is made of lyticum aluminum alloy.
Ｉ隊
尚、負極（１）は専へ多孔体（７）の延長部を外装罐（
４）の内底面にスポット溶接して電気接続し、又正極（
２１は正極リード片（８１により正極キャップ（５）に
電気接続されている。この電池を（Ａ１）とする。For the I squad, the negative electrode (1) is made by attaching the extension of the porous body (7) to the outer can (
Make an electrical connection by spot welding to the inner bottom surface of 4), and also attach the positive electrode (
21 is electrically connected to the positive electrode cap (5) by a positive electrode lead piece (81). This battery is referred to as (A1).
比較のために、導電性多孔体を有しないリチウム−アル
ミニウム合金よりなる負極を用い、且負極リード片を別
途用いて負極と外装罐とを電気接続する以外は実施例１
と同様の比較電池（Ｂ１）を作成した。For comparison, Example 1 was used except that a negative electrode made of a lithium-aluminum alloy without a conductive porous body was used, and a negative electrode lead piece was used separately to electrically connect the negative electrode and the exterior can.
A comparative battery (B1) similar to the above was created.
第３図はこれら電池の充放電サイクル特性図を示すもの
であり、サイクル条件は充電電流５ＱｍＡで充電終止電
圧４．ＯＶ、放電電流５０ｍＡで放電終止電圧１．５ｖ
とし、サイクル数と放電容量との関係を示す。FIG. 3 shows the charge/discharge cycle characteristics of these batteries, and the cycle conditions are a charging current of 5 QmA and a charge end voltage of 4. OV, discharge end voltage 1.5V at discharge current 50mA
and shows the relationship between the number of cycles and discharge capacity.
第３図よシ本発明電池（Ａ１〕は比較電池（Ｂりに比し
てサイクル特性が改善されているのがわかる。It can be seen from FIG. 3 that the battery of the present invention (A1) has improved cycle characteristics compared to the comparative battery (B).
実施例２
第２図は扁平型非水電解液二次電池の半断面図を示し、
ａυは実施例１で詳述した本発明の要旨とする負極であ
って、ステンレス製パンチング板よりなる導電性多孔体
１１刀を埋設したりチウム−アルミニウム合金よりなり
、導電性多孔体（１７１の一部を負極罐１１４の内底面
にスポット溶接により固着されている。尚、導電性多孔
体ＣＩ？）の位置はスポット溶接の関係から中央より負
極罐１４側に位置させると有益である。Example 2 FIG. 2 shows a half-sectional view of a flat non-aqueous electrolyte secondary battery,
aυ is a negative electrode according to the gist of the present invention detailed in Example 1, in which a conductive porous body made of a punched plate made of stainless steel is embedded, or a conductive porous body made of a lithium-aluminum alloy (171 pieces) is embedded. A part of the conductive porous body CI?) is fixed to the inner bottom surface of the negative electrode housing 114 by spot welding.In view of spot welding, it is advantageous to position the conductive porous body CI?) closer to the negative electrode housing 14 than the center.
σ２は実施例１の正極と同一組成の正極であって、正極
罐ｔ１５１の内底面に固着せる正極集電体ａ樽に圧接さ
れている。ｑ３はポリプロピレン多孔膜よりなるセパレ
ータ、ｕｅは絶縁バッキングである。この電池を（Ａ２
）とする。σ2 is a positive electrode having the same composition as the positive electrode of Example 1, and is pressed into contact with a positive electrode current collector a barrel fixed to the inner bottom surface of the positive electrode can t151. q3 is a separator made of a porous polypropylene membrane, and ue is an insulating backing. This battery (A2
).
比較のために、導電性多孔体を有しないリチウム−アル
ミニウム合金よりなる負極を用い、且負極罐の内底面に
負極集電体を固着し、負極を負極集電体く圧着して電気
接続する構成とする以外は実施例２と同様の比較電池（
Ｂ２］を作成した。For comparison, a negative electrode made of a lithium-aluminum alloy without a conductive porous material was used, a negative electrode current collector was fixed to the inner bottom of the negative electrode container, and the negative electrode was crimped onto the negative electrode current collector for electrical connection. A comparative battery similar to Example 2 except for the configuration (
B2] was created.
第４図はこれら電池の充放電サイクル特性図を示すもの
であり、サイクル条件は充ｉｔ流２．０ ｍＡで充電終
止電圧４．ＱＶ、放ｔ’ａ流２．ＯｍＡで放電終止電圧
１，５ｖとし、６時間のサイクル試験を行いサイクル数
と放電終止電圧との関係を示す。FIG. 4 shows the charge/discharge cycle characteristics of these batteries, and the cycle conditions are a charging current of 2.0 mA and a charge end voltage of 4.0 mA. QV, Hot'a style 2. A cycle test was conducted for 6 hours at a discharge end voltage of 1.5 V at OmA to show the relationship between the number of cycles and the discharge end voltage.
第４図より本発明電池（Ａ２）は比較電池（Ｂ２）に比
してサイクル特性が改善されているのがわかる。It can be seen from FIG. 4 that the battery of the present invention (A2) has improved cycle characteristics compared to the comparative battery (B2).
（ト）発明の効果
上述した如り、リチウムを活物質とする負極を備えた非
水電解液二次１池において、負極としてｓｔ性多孔体を
埋設したリチウム合金を用いることにより、４を性多孔
体の孔部を介してリチウム合金が連結され、リチウム合
金が導電性多孔体に強固に支持されるためリチウム合金
が負極から脱落するのが抑制されサイクル特性の向上が
計れるものであり、その工業鈎浦値は極めて犬である。(g) Effects of the invention As mentioned above, in a non-aqueous electrolyte secondary battery equipped with a negative electrode containing lithium as an active material, by using a lithium alloy in which an ST porous body is embedded as the negative electrode, 4. The lithium alloy is connected through the pores of the porous body, and the lithium alloy is firmly supported by the conductive porous body, which prevents the lithium alloy from falling off the negative electrode and improves cycle characteristics. Industrial Konoura values are extremely poor.
尚、リチウムと合金化する金属としては実施例で示した
アルミニウムに限定されず、マグネシウム、亜鉛、スズ
、鉛なども用いることができる。Note that the metal alloyed with lithium is not limited to aluminum shown in the examples, but may also be used such as magnesium, zinc, tin, and lead.
第１図は本発明の一実施例による円筒型非水電解液二次
電池の横断面図、第２図は本発明の他の実施例による扁
平型非水電解液二次電池の半断面図、第６図及び第４図
は本発明電池と比較電池との充放電サイクル特性比較図
を夫々示す。
（ＩＩｏｌｌ−・・負極、＋２１０３−・・正極、（３
１（１３−セパレータ、（４）・・・負極端子兼用外装
罐、（５）・・・正極キャップ、（６）（１６１・・・
絶縁バッキング、（７１Ｑ７１・・・４’４性多孔体、
（１４１・・・負極罐、０５１・・・正極罐。FIG. 1 is a cross-sectional view of a cylindrical non-aqueous electrolyte secondary battery according to an embodiment of the present invention, and FIG. 2 is a half-sectional view of a flat-type non-aqueous electrolyte secondary battery according to another embodiment of the present invention. , FIG. 6, and FIG. 4 respectively show comparison diagrams of the charge/discharge cycle characteristics of the battery of the present invention and the comparative battery. (IIoll-...Negative electrode, +2103-...Positive electrode, (3
1 (13-separator, (4)...Negative electrode terminal/exterior can, (5)...Positive electrode cap, (6) (161...
Insulating backing, (71Q71...4'4 porous material,
(141... negative electrode can, 051... positive electrode can.
Claims (2)
活物質とする負極とを備え、前記負極は導電性多孔体を
埋設したリチウム合金よりなることを特徴とする非水系
二次電池。(1) A non-aqueous secondary battery comprising a positive electrode made of a rechargeable active material and a negative electrode made of lithium as an active material, the negative electrode being made of a lithium alloy in which a conductive porous body is embedded.
或いはニッケルからなるパンチング板、網若しくはラス
板である特許請求の範囲第（１）項記載の非水系二次電
池。(2) The nonaqueous secondary battery according to claim (1), wherein the conductive porous body is a punched plate, a mesh, or a lath plate made of stainless steel, molybdenum, titanium, or nickel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62122301A JPS63285866A (en) | 1987-05-19 | 1987-05-19 | Nonaqueous secondary battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62122301A JPS63285866A (en) | 1987-05-19 | 1987-05-19 | Nonaqueous secondary battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63285866A true JPS63285866A (en) | 1988-11-22 |
Family
ID=14832567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62122301A Pending JPS63285866A (en) | 1987-05-19 | 1987-05-19 | Nonaqueous secondary battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63285866A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63308868A (en) * | 1987-06-10 | 1988-12-16 | Hitachi Ltd | Secondary cell |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59186275A (en) * | 1983-04-07 | 1984-10-23 | Matsushita Electric Ind Co Ltd | Manufacture of negative pole for nonaqueous electrolyte secondary battery |
| JPS59186276A (en) * | 1983-04-07 | 1984-10-23 | Matsushita Electric Ind Co Ltd | Nonaqueous electrolyte secondary battery |
| JPS62123660A (en) * | 1985-11-25 | 1987-06-04 | Hitachi Maxell Ltd | Lithium secondary cell |
-
1987
- 1987-05-19 JP JP62122301A patent/JPS63285866A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59186275A (en) * | 1983-04-07 | 1984-10-23 | Matsushita Electric Ind Co Ltd | Manufacture of negative pole for nonaqueous electrolyte secondary battery |
| JPS59186276A (en) * | 1983-04-07 | 1984-10-23 | Matsushita Electric Ind Co Ltd | Nonaqueous electrolyte secondary battery |
| JPS62123660A (en) * | 1985-11-25 | 1987-06-04 | Hitachi Maxell Ltd | Lithium secondary cell |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63308868A (en) * | 1987-06-10 | 1988-12-16 | Hitachi Ltd | Secondary cell |
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