JP2932285B2 - Method for producing zinc alloy powder for alkaline batteries with low gas generation - Google Patents
Method for producing zinc alloy powder for alkaline batteries with low gas generationInfo
- Publication number
- JP2932285B2 JP2932285B2 JP1193690A JP19369089A JP2932285B2 JP 2932285 B2 JP2932285 B2 JP 2932285B2 JP 1193690 A JP1193690 A JP 1193690A JP 19369089 A JP19369089 A JP 19369089A JP 2932285 B2 JP2932285 B2 JP 2932285B2
- Authority
- JP
- Japan
- Prior art keywords
- alloy powder
- zinc alloy
- zinc
- gas generation
- hydrogen gas
- 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 - Lifetime
Links
- 239000000843 powder Substances 0.000 title claims description 42
- 229910001297 Zn alloy Inorganic materials 0.000 title claims description 41
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 239000007789 gas Substances 0.000 claims description 16
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 10
- 229910052725 zinc Inorganic materials 0.000 claims description 9
- 239000011701 zinc Substances 0.000 claims description 9
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 4
- 229910052749 magnesium Inorganic materials 0.000 claims description 4
- 239000011777 magnesium Substances 0.000 claims description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 3
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 claims description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052797 bismuth Inorganic materials 0.000 claims description 3
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 3
- 229910052793 cadmium Inorganic materials 0.000 claims description 3
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052791 calcium Inorganic materials 0.000 claims description 3
- 239000011575 calcium Substances 0.000 claims description 3
- 229910052733 gallium Inorganic materials 0.000 claims description 3
- 229910052738 indium Inorganic materials 0.000 claims description 3
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- 229910052712 strontium Inorganic materials 0.000 claims description 3
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims description 3
- 229910052714 tellurium Inorganic materials 0.000 claims description 3
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052716 thallium Inorganic materials 0.000 claims description 3
- BKVIYDNLLOSFOA-UHFFFAOYSA-N thallium Chemical compound [Tl] BKVIYDNLLOSFOA-UHFFFAOYSA-N 0.000 claims description 3
- 229910052718 tin Inorganic materials 0.000 claims description 3
- 239000011261 inert gas Substances 0.000 claims description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 18
- 238000010438 heat treatment Methods 0.000 description 14
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 239000007773 negative electrode material Substances 0.000 description 6
- 229910052753 mercury Inorganic materials 0.000 description 5
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 239000011787 zinc oxide Substances 0.000 description 3
- 238000000889 atomisation Methods 0.000 description 2
- 229940075397 calomel Drugs 0.000 description 2
- ZOMNIUBKTOKEHS-UHFFFAOYSA-L dimercury dichloride Chemical compound Cl[Hg][Hg]Cl ZOMNIUBKTOKEHS-UHFFFAOYSA-L 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000005275 alloying Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000012047 saturated solution Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010926 waste battery Substances 0.000 description 1
- 150000003751 zinc Chemical class 0.000 description 1
Classifications
-
- 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
- Battery Electrode And Active Subsutance (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は改善された特性を持つアルカリ電池用亜鉛合
金粉末及びその製造方法に関し、特に熱処理されたもの
であることを特徴とするガス発生量の少ない亜鉛合金粉
末及びその製造方法に関するものである。Description: FIELD OF THE INVENTION The present invention relates to a zinc alloy powder for an alkaline battery having improved properties and a method for producing the same, and more particularly, to a gas generation amount which is heat-treated. And a method for producing the same.
［従来技術］ 従来、アルカリ乾電池等電池の負極材としては亜鉛又
は亜鉛合金が用いられている。亜鉛は水素過電圧が高い
ことや価格が比較的低廉であることから好んで負極材と
して用いられてきたのであるが、亜鉛を使用することの
みでは電池使用時における水素ガスの多量発生を充分に
抑制することは困難であってそれに伴う電解液漏れなど
の問題を生じていた。[Prior Art] Conventionally, zinc or a zinc alloy has been used as a negative electrode material for batteries such as alkaline dry batteries. Zinc has been used as a negative electrode material because of its high hydrogen overvoltage and its relatively low price.However, the use of zinc alone sufficiently suppresses the generation of large amounts of hydrogen gas when using batteries. It is difficult to perform such a process, and there has been a problem such as leakage of an electrolytic solution.
これらの問題を解決する目的で近年広く行われている
有効なガス発生抑制の方法として亜鉛を汞化することが
行われている。しかしながら、この方法は廃乾電池を処
分する際の深刻な公害面の問題を伴うものであるため、
できるだけ低汞化あるいは無汞化で所望の効果が得られ
る亜鉛合金の開発が求められるようになり、これに応え
て本発明者等も特開昭63−304571号公報「電池用亜鉛合
金およびその製造法」において開示したようにそのよう
な亜鉛合金の開発に一応の成果を上げている。For the purpose of solving these problems, zinc has been converted into calomel as an effective gas generation suppression method which has been widely used in recent years. However, this method involves serious pollution problems when disposing of the waste batteries,
In response to this, the development of a zinc alloy capable of obtaining a desired effect by reducing or eliminating calomel as much as possible has been demanded, and in response to this, the present inventors have also disclosed JP-A-63-304571, `` Zinc alloy for batteries and As disclosed in the "Method of Manufacturing", the development of such a zinc alloy has achieved tentative results.
［発明が解決しようとする問題点」 上述のように環境汚染防止の上からもより一層低汞化
あるいは無汞化のものでガス発生抑制効果の備わった亜
鉛合金の開発が望まれているが、本発明者等の上記公開
特許公報にも示されているように水銀の添加量は最低で
も0.3重量％以上でなければ有効な汞化はできないと一
般に認識されていたのであり、アルカリ電池の使用によ
る水素ガス発生抑制の目的には、ある程度の水銀を添加
して汞化した亜鉛合金を使用することがどうしても必要
であると考えられていたのである。[Problems to be Solved by the Invention] As described above, from the viewpoint of preventing environmental pollution, there is a demand for the development of a zinc alloy having a low-melting or non-melting property and having a gas generation suppressing effect. However, as shown in the above-mentioned published patent publication of the present inventors, it was generally recognized that effective mercurization cannot be achieved unless the amount of added mercury is at least 0.3% by weight or more. It was thought that for the purpose of suppressing the generation of hydrogen gas by use, it was absolutely necessary to use a zinc alloy that had been added with a certain amount of mercury and had been calcined.
［課題を解決するための手段］ 上記課題を解決するため、鋭意研究を続けているうち
に、本発明者等は、アルカリ電池に使用するための亜鉛
合金粉末をある条件下で熱処理することによって水素ガ
ス発生量が熱処理しないものに比し著しく少ない改質さ
れたアルカリ電池用亜鉛合金粉末とすることができるこ
とを見い出し本発明を達成した。[Means for Solving the Problems] In order to solve the above problems, while continuing intensive research, the present inventors have conducted heat treatment of zinc alloy powder for use in alkaline batteries under certain conditions. The present inventors have found that a modified zinc alloy powder for an alkaline battery can be obtained which has a significantly smaller amount of hydrogen gas generation than that of a non-heat-treated hydrogen gas, thereby achieving the present invention.
すなわち本発明は電池等の負極材として使用したとき
の水素ガスの発生量が従来の亜鉛合金粉末に比し少なく
とも30％少ない新規な亜鉛合金粉末に関し、さらに又、
アルミニウム、ガリウム、インジウム、タリウム、マグ
ネシウム、カルシウム、ストロンチウム、錫、鉛、ビス
マス、カドミウム、銀及びテルルからなる群より選ばれ
た少なくとも１種の金属を0.0001〜0.5重量％を含有
し、残部が亜鉛及び不可避的不純物からなる亜鉛合金を
100〜500℃の温度下及び特定のガス雰囲気下で熱処理す
ることによって前記水素ガス発生量の少ない亜鉛合金と
する方法に関するものである。That is, the present invention relates to a novel zinc alloy powder in which the amount of generated hydrogen gas when used as a negative electrode material of a battery or the like is at least 30% smaller than that of a conventional zinc alloy powder.
0.0001 to 0.5% by weight of at least one metal selected from the group consisting of aluminum, gallium, indium, thallium, magnesium, calcium, strontium, tin, lead, bismuth, cadmium, silver and tellurium, with the balance being zinc And zinc alloy consisting of unavoidable impurities
The present invention relates to a method for producing a zinc alloy having a low hydrogen gas generation amount by performing a heat treatment at a temperature of 100 to 500 ° C. and a specific gas atmosphere.
［作 用］ 本発明の新規な亜鉛合金粉末は、合金元素として、ア
ルミニウム、ガリウム、インジウム、タリウム、マグネ
シウム、カルシウム、ストロンチウム、錫、鉛、ビスマ
ス、カドミウム、銀及びテルルからなる群より選ばれた
少なくとも１種の金属を0.0001〜0.5重量％用い、これ
を亜鉛及び不可避的不純物と混合溶融して合金化した亜
鉛合金粉末を噴霧法で得た後、熱処理炉内において100
〜500℃の温度条件で熱処理をすることによって製造さ
れる。この場合の熱処理条件は以下の通りである。[Operation] The novel zinc alloy powder of the present invention is selected from the group consisting of aluminum, gallium, indium, thallium, magnesium, calcium, strontium, tin, lead, bismuth, cadmium, silver and tellurium as alloying elements. At least one metal is used in an amount of 0.0001 to 0.5% by weight, mixed with zinc and unavoidable impurities and melted to obtain an alloyed zinc alloy powder by a spraying method.
It is manufactured by performing heat treatment at a temperature of about 500 ° C. The heat treatment conditions in this case are as follows.
すなわち採用可能な熱処理温度は100〜500℃であり、
好ましくは300〜450℃である。これは100℃以下では、
熱処理に時間がかかり過ぎる上に効果が小さく、又500
℃以上では、亜鉛の融点が420℃付近であることから合
金粉末の一部が溶融して焼結した状態となるからであ
る。That is, the heat treatment temperature that can be adopted is 100 to 500 ° C,
Preferably it is 300-450 degreeC. This is below 100 ° C,
The heat treatment takes too long and the effect is small.
If the temperature is higher than or equal to ° C, the melting point of zinc is around 420 ° C, so that a part of the alloy powder is melted and sintered.
処理雰囲気は、粉末表面の酸化を防止する上で、例え
ばHe、Ne、H2、CO、NH3等の不活性ガスあるいは還元性
ガスとする。The treatment atmosphere is, for example, an inert gas such as He, Ne, H 2 , CO, or NH 3 or a reducing gas in order to prevent oxidation of the powder surface.
熱処理時間は、５分〜５時間とすることができるが、
１〜２時間が好ましい。The heat treatment time can be from 5 minutes to 5 hours,
1-2 hours are preferred.
本発明で使用する熱処理炉としては、所定の雰囲気を
保ち得るものであればどのような構造のものでもよく、
又、加熱源としては電気、液体、気体、固体その他どの
ような加熱源を用いてもよい。The heat treatment furnace used in the present invention may have any structure as long as it can maintain a predetermined atmosphere.
As a heating source, any heating source such as electricity, liquid, gas, and solid may be used.
従来技術では上述組成の合金を通常のアトマイズ法に
よって製造し、汞化処理することによってアルカリ電池
用亜鉛合金粉末を製造しているが、この方法ではアトマ
イズ粉末製造時に亜鉛粉末が急冷され且つ、アトマイズ
に空気が用いられる為、粉末表面に酸化皮膜が生じ、得
られた亜鉛合金粉末は多結晶であって添加金属も多くは
偏析して存在するものとなる。この為、亜鉛合金粉末の
ガス発生を抑制する目的で加えた添加金属の効果は薄れ
ることとなり、更に、亜鉛合金粉末の表面に生じた酸化
物層を除去する為の工程が必要となっていた。In the prior art, an alloy having the above composition is manufactured by a normal atomization method, and a zinc alloy powder for an alkaline battery is manufactured by performing a calcining treatment. However, in this method, the zinc powder is quenched during the manufacture of the atomized powder, and the atomization is performed. Since air is used in the process, an oxide film is formed on the surface of the powder, and the resulting zinc alloy powder is polycrystalline, and many of the added metals are segregated. For this reason, the effect of the added metal added for the purpose of suppressing the gas generation of the zinc alloy powder is weakened, and further, a step for removing the oxide layer generated on the surface of the zinc alloy powder is required. .
これに対し、本発明法では一般に非酸化性ガス雰囲気
中所定温度条件下で熱処理を行なう為、製造された亜鉛
合金粉末は結晶が均一で、安定しており、亜鉛合金粉末
表面に酸化物層ができていても上述の雰囲気処理で十分
に除去できるため、従来法では必要であった酸化物除去
工程を設ける必要がない。On the other hand, in the method of the present invention, since the heat treatment is generally performed under a predetermined temperature condition in a non-oxidizing gas atmosphere, the produced zinc alloy powder has a uniform and stable crystal, and an oxide layer is formed on the surface of the zinc alloy powder. However, since it can be sufficiently removed by the above-described atmosphere treatment, there is no need to provide an oxide removing step which is required in the conventional method.
又、製造された亜鉛合金粉末は電池負極材として使用
された場合等におけるガス発生量が著しく少ないもので
あることが確認された。In addition, it was confirmed that the produced zinc alloy powder produced a remarkably small amount of gas when used as a battery negative electrode material.
この効果は極めて顕著であるため、本発明の亜鉛合金
粉末を同定する手段として用いることができる。即ち、
たとえば与えられた亜鉛合金粉末を、酸化亜鉛を飽和さ
せた45℃の40％KOH水溶液中に浸漬させて測定した水素
ガス発生量が、同じ組成の熱処理されていない従来の亜
鉛合金粉末を同一の酸化亜鉛飽和溶液中に浸漬させて同
一の条件で測定した水素ガスの発生量に比し、少なくと
も30％少ないことが確認されれば、それは与えられた粉
末が熱処理された本発明の亜鉛合金粉末であることを意
味すると結論してよい。何故ならば、従来、そのように
改質された亜鉛合金粉末は存在しなかったからである。Since this effect is extremely remarkable, it can be used as a means for identifying the zinc alloy powder of the present invention. That is,
For example, a given zinc alloy powder was immersed in a 40% KOH aqueous solution at 45 ° C. saturated with zinc oxide, and the hydrogen gas generation amount measured was the same as that of a conventional unalloyed zinc alloy powder having the same composition. If it is confirmed that at least 30% less than the amount of hydrogen gas generated by immersing in the zinc oxide saturated solution and measuring under the same conditions, it means that the given powder is heat treated zinc alloy powder of the present invention. You may conclude that it means This is because, in the past, there was no zinc alloy powder so modified.
以下、本発明を実施例により詳細に説明する。 Hereinafter, the present invention will be described in detail with reference to examples.
［実施例１］ 第１表に示す組成の各種亜鉛合金を、通常の噴霧法に
より粒度48〜150メッシュの粉末として製造し、次いで
これらの粉末を熱処理炉中にてH2ガス雰囲気下350℃で
２時間熱処理し、得られた熱処理済み亜鉛合金粉末の一
定量をKOH溶液中に入れ、水銀を0.04重量％添加して汞
化したもの（表中偶数番号の合金粉末）と、無汞化のも
の（同奇数番号の合金粉末）を、それぞれ酸化亜鉛を飽
和させた45℃の40％KOH溶液中に浸漬させて、水素ガス
発生量を測定し評価した。その結果を第１表に示す。水
素ガス発生量（μ/g.d）は合金粉末1g当り１日の発生
量である。[Example 1] Various zinc alloys having compositions shown in Table 1, were prepared as a powder of particle size 48 to 150 mesh by a conventional spraying method, and then under H 2 gas atmosphere 350 ° C. at a heat treatment furnace in these powders For 2 hours, put a certain amount of the obtained heat-treated zinc alloy powder into a KOH solution, add mercury by adding 0.04% by weight of mercury (even-numbered alloy powder in the table), (Alloy powder of the same odd number) were immersed in a 40% KOH solution at 45 ° C. saturated with zinc oxide, and the amount of hydrogen gas generated was measured and evaluated. Table 1 shows the results. The amount of hydrogen gas generated (μ / gd) is the amount of hydrogen gas generated per day per g of alloy powder.
同様に第１表に示した各組成の汞化した又はしない亜
鉛合金粉末を熱処理しないこと以外は、上述と同じ方法
で評価試験した結果を熱処理品の結果と対比して第１表
に示した。Similarly, the results of the evaluation test performed in the same manner as described above except that the zinc alloy powder having or without the respective compositions shown in Table 1 was not heat-treated were shown in Table 1 in comparison with the results of the heat-treated products. .
これらの結果から同じ組成の亜鉛合金粉末であっても
熱処理品は非熱処理品に比べ水素ガス発生量がほぼ半分
位に抑制されることが判明した。即ち、無汞化の亜鉛合
金粉末であっても熱処理品（奇数番号例）は、従来の非
熱処理低汞化亜鉛合金粉末とほぼ同等の水素ガス発生量
であり、従来の低水銀電池の代替品として無水銀電池を
製造、使用することが充分可能となったことが理解され
る。From these results, it was found that even with the zinc alloy powder having the same composition, the amount of hydrogen gas generated in the heat-treated product was suppressed to about half that of the non-heat-treated product. That is, the heat-treated product (odd-numbered example) has almost the same amount of hydrogen gas as the conventional non-heat-treated low-melonized zinc alloy powder even if it is a non-melted zinc alloy powder, and is an alternative to the conventional low-mercury battery. It is understood that it has become possible to manufacture and use a mercury-free battery as a product.
［実施例２］ 鉛0.005％、マグネシウム0.007％、残部が亜鉛及び不
可避的不純物からなる組成の亜鉛合金粉末を供試材とし
て、表示の各条件下で熱処理した場合としない場合につ
いて、水素ガス発生量を調べた結果を第２表に示す。 [Example 2] Using a zinc alloy powder having a composition of 0.005% lead, 0.007% magnesium, and the balance of zinc and unavoidable impurities as a test material, hydrogen gas generation was performed with and without heat treatment under the indicated conditions. The results of the determination are shown in Table 2.
第２表から、熱処理を行うためのガス雰囲気としては
H2ガスの方がN2ガスより、水素ガス抑制効果を高める目
的上、若干優れていることが理解される。ただし、どん
なガス雰囲気とすることが最も有利であるかは製造コス
トに合わせて調整できることが理解される。 From Table 2, the gas atmosphere for heat treatment
It is understood that H 2 gas is slightly superior to N 2 gas for the purpose of enhancing the hydrogen gas suppression effect. However, it is understood that the most advantageous gas atmosphere can be adjusted according to the production cost.
［発明の効果］ 本発明によれば、上述の如く、汞化された又は汞化さ
れていない亜鉛合金粉末を簡易な手段で熱処理すること
のみによって電池の負極材として使用したときなどの水
素ガス発生量を従来品に比し著しく減少させることがで
きるばかりでなく、無汞化の亜鉛合金粉末を用いた場合
でさえも、従来の低汞化亜鉛合金粉末と同等程度に電池
負極材として使用したときなどの水素ガス発生量を抑制
できるので無汞化亜鉛合金粉末を用いた電池即ち無水銀
電池としても充分使用できる電池がつくれることにな
り、公害面における利点ははかり知れない程大であると
いうことができる。[Effects of the Invention] According to the present invention, as described above, when hydrogen gas is used as a negative electrode material of a battery by only heat-treating a zinc alloy powder that has been calorinized or not having been calcined by simple means, for example, Not only can the generation amount be significantly reduced compared to conventional products, but even when non-melonized zinc alloy powder is used, it is used as a battery negative electrode material to the same extent as conventional low-melonized zinc alloy powder Since the amount of generated hydrogen gas can be suppressed, for example, a battery using a non-melonized zinc alloy powder, that is, a battery that can be sufficiently used as a mercury-free battery, can be produced, and the advantage in terms of pollution is enormous. It can be said.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 高岡 衛 東京都千代田区丸の内１丁目８番２号 同和鉱業株式会社内 (56)参考文献 特開 昭61−131366（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) H01M 4/42 C22C 1/00 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Mamoru Takaoka 1-8-2 Marunouchi, Chiyoda-ku, Tokyo Dowa Mining Co., Ltd. (56) References JP-A-61-131366 (JP, A) (58) Survey Field (Int.Cl. 6 , DB name) H01M 4/42 C22C 1/00
Claims (1)
リウム、マグネシウム、カルシウム、ストロンチウム、
錫、鉛、ビスマス、カドミウム、銀及びテルルからなる
群より選ばれた少なくとも１種の金属を0.0001〜0.5重
量％含み、残部が亜鉛及び不可避不純物からなる空気中
にアトマイズして製造した亜鉛合金を100〜500℃の温度
下で不活性ガスあるいは還元性ガスを用いて熱処理する
ことによってガス発生量の少ない合金粉末とすることを
特徴とする電池用亜鉛合金粉末の製造方法。1. An aluminum, gallium, indium, thallium, magnesium, calcium, strontium,
A zinc alloy produced by atomizing in air consisting of at least one metal selected from the group consisting of tin, lead, bismuth, cadmium, silver and tellurium and containing the balance of zinc and unavoidable impurities. A method for producing a zinc alloy powder for a battery, comprising heat-treating an inert gas or a reducing gas at a temperature of 100 to 500 [deg.] C. to produce an alloy powder having a small amount of gas generated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1193690A JP2932285B2 (en) | 1989-07-26 | 1989-07-26 | Method for producing zinc alloy powder for alkaline batteries with low gas generation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1193690A JP2932285B2 (en) | 1989-07-26 | 1989-07-26 | Method for producing zinc alloy powder for alkaline batteries with low gas generation |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP896599A Division JP3352965B2 (en) | 1999-01-18 | 1999-01-18 | Zinc alloy powder for alkaline batteries with low gas generation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0357160A JPH0357160A (en) | 1991-03-12 |
| JP2932285B2 true JP2932285B2 (en) | 1999-08-09 |
Family
ID=16312160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1193690A Expired - Lifetime JP2932285B2 (en) | 1989-07-26 | 1989-07-26 | Method for producing zinc alloy powder for alkaline batteries with low gas generation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2932285B2 (en) |
-
1989
- 1989-07-26 JP JP1193690A patent/JP2932285B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0357160A (en) | 1991-03-12 |
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