JP2563386B2 - Method for manufacturing negative electrode for thermal battery - Google Patents
Method for manufacturing negative electrode for thermal batteryInfo
- Publication number
- JP2563386B2 JP2563386B2 JP62281221A JP28122187A JP2563386B2 JP 2563386 B2 JP2563386 B2 JP 2563386B2 JP 62281221 A JP62281221 A JP 62281221A JP 28122187 A JP28122187 A JP 28122187A JP 2563386 B2 JP2563386 B2 JP 2563386B2
- Authority
- JP
- Japan
- Prior art keywords
- negative electrode
- lithium
- powder
- molten salt
- salt electrolyte
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/30—Deferred-action cells
- H01M6/36—Deferred-action cells containing electrolyte and made operational by physical means, e.g. thermal cells
-
- 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
- H01M4/06—Electrodes for primary cells
- H01M4/08—Processes of manufacture
- H01M4/12—Processes of manufacture of consumable metal or alloy electrodes
-
- 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
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Primary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は熱電池用リチウム負極の製造法に関するもの
である。TECHNICAL FIELD The present invention relates to a method for producing a lithium negative electrode for a thermal battery.
従来の技術 熱電池とは、電解質に溶融塩を用いた一次電池であ
る。この溶融塩は、常温では固体でありイオン伝導性を
有しないが融点以上に加熱され液体化すると大きなイオ
ン伝導性を示し、優れた電解質となるものである。従っ
て、熱電池は、（１）貯蔵中の劣化がほとんどない，
（２）大電流密度放電が可能である等に特長を有してお
り、各種飛しょう体の主電源や非常用電源として利用さ
れている。BACKGROUND ART A thermal battery is a primary battery that uses a molten salt as an electrolyte. This molten salt is solid at room temperature and has no ionic conductivity, but when it is heated to a temperature above its melting point and liquefied, it exhibits great ionic conductivity and becomes an excellent electrolyte. Therefore, the thermal battery has (1) almost no deterioration during storage,
(2) It has features such as high current density discharge and is used as a main power source and emergency power source for various flying objects.
近年では、負極活物質としてリチウムやリチウムの各
種合金が研究されているが、この中でも最も活性である
リチウムを用いたものが、より高出力，高エネルギー密
度化に優れると考えられ注目されている。しかしなが
ら、リチウムは熱電池の作動温度域である400〜650℃の
範囲では液体化するため、それ単独では電極を構成でき
ない。そこで、米国特許No.4,221,849明細書に示される
様な、リチウムと合金化しない金属粉末によってリチウ
ムを保持固定化する手法が提案されていた。そして、金
属粉末によって保持固定化されたリチウム負極をシート
化し、円板状に打ち抜いた負極ディスクを金属製カップ
に挿填して負極層を構成していた。この負極に電解質層
と正極層を組み合せて素電池としていた。In recent years, lithium and various alloys of lithium have been studied as a negative electrode active material. Among them, the one using lithium, which is the most active, is considered to be excellent in higher output and higher energy density, and has attracted attention. . However, since lithium liquefies in the operating temperature range of the thermal battery in the range of 400 to 650 ° C, the electrode cannot be configured by itself. Therefore, there has been proposed a method of holding and fixing lithium with a metal powder that does not alloy with lithium, as shown in US Pat. No. 4,221,849. Then, the lithium negative electrode held and fixed by the metal powder was formed into a sheet, and the negative electrode disk punched out in a disc shape was inserted into a metal cup to form a negative electrode layer. A cell was prepared by combining the negative electrode with an electrolyte layer and a positive electrode layer.
発明が解決しようとする問題点 以上の様な従来技術によるリチウム負極では、負極中
には溶融塩電解質が存在しないため負極反応は電解質層
と負極との界面のみに制限されてしまう。また、放電反
応進行にともない負極活物質であるリチウムは電解質層
界面近くのものから消費されてゆきしだいに負極層内部
にしか存在しなくなってしまう。従って、リチウムの電
解質層界面への移動もしくは溶融塩電解質の負極内部へ
の移動が起らぬかぎり負極反応が進行できず、素電池の
内部抵抗を増大し出力電圧の低下を引き起して放電持続
時間を短くしていた。つまりリチウム負極内にも溶融塩
電解質を存在させることで負極反応を効率良く行うこと
ができ放電持続時間を延長できることが分る。しかし、
従来の手法では、この種の負極に溶融塩電解質を混合す
る方法は提案されていない。また、リチウムアルミ合金
やリチウムシリコン合金負極の様に活物質自身が粉末状
態ではなく、粘着性を有するかたまりであるため製造さ
れたリチウム負極に用意に溶融塩電解質粉末を混合する
ことは難しく、リチウム負極内に溶融塩電解質を分散さ
せることはできなかった。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In the above-described conventional lithium negative electrode, since the molten salt electrolyte does not exist in the negative electrode, the negative electrode reaction is limited to only the interface between the electrolyte layer and the negative electrode. Further, as the discharge reaction progresses, lithium, which is the negative electrode active material, is consumed from the one near the interface of the electrolyte layer and gradually exists only inside the negative electrode layer. Therefore, the negative electrode reaction cannot proceed unless the lithium moves to the interface of the electrolyte layer or the molten salt electrolyte moves to the inside of the negative electrode, increasing the internal resistance of the unit cell and causing a decrease in the output voltage to cause discharge. The duration was shortened. That is, it can be seen that the presence of the molten salt electrolyte also in the lithium negative electrode allows the negative electrode reaction to be efficiently performed and the discharge duration time to be extended. But,
No conventional method has proposed a method of mixing a molten salt electrolyte with this type of negative electrode. In addition, since the active material itself is not in a powder state like a lithium aluminum alloy or a lithium silicon alloy negative electrode and is a lump having adhesiveness, it is difficult to easily mix the molten salt electrolyte powder into the manufactured lithium negative electrode, The molten salt electrolyte could not be dispersed in the negative electrode.
本発明は、上記の様な従来の問題点を解消し、リチウ
ムを金属粉末により保持固定化したリチウム負極中に、
溶融塩電解質粉末を均一に分散させた高性能リチウム負
極を提供する製造法を提案することを目的とするもので
ある。The present invention solves the conventional problems as described above, and in a lithium negative electrode in which lithium is held and immobilized by a metal powder,
It is an object of the present invention to propose a manufacturing method for providing a high-performance lithium negative electrode in which a molten salt electrolyte powder is uniformly dispersed.
問題点を解決するための手段 この問題点を解決するために本発明は、リチウムを不
活性ガス中でその融点以上に加熱して溶融する工程と、
この溶融リチウムにリチウムとは合金化しない金属粉末
および溶融塩電解質粉末をそれぞれ単独に添加混合する
か、または金属粉末と溶融塩電解質粉末の両者を予め混
合した粉末を不活性ガス中でリチウムの融点以上、溶融
塩電解質の融点未満の温度に保った状態で添加混合する
工程と、その混合物を不活性ガス中で冷却し固化する工
程を有し、その後乾燥雰囲気中でシート化する工程、打
抜き加工する工程、金属製カップ内に挿填する工程を経
て製造される熱電池用負極の製造法を提案するものであ
る。Means for Solving the Problems In order to solve this problem, the present invention comprises a step of heating lithium in an inert gas to a temperature equal to or higher than its melting point to melt the lithium,
To this molten lithium, a metal powder not alloyed with lithium and a molten salt electrolyte powder are individually added and mixed, or a powder in which both the metal powder and the molten salt electrolyte powder are mixed in advance is mixed with the melting point of lithium in an inert gas. As mentioned above, there is a step of adding and mixing while keeping the temperature below the melting point of the molten salt electrolyte, and a step of cooling and solidifying the mixture in an inert gas, then a step of forming into a sheet in a dry atmosphere, punching The present invention proposes a method for manufacturing a negative electrode for a thermal battery, which is manufactured through the step of inserting into a metal cup and the step of inserting into a metal cup.
作用 この方法によれば、リチウムは融点以上に加熱してい
るため液体化しており、たとえ金属粉末と混合されてい
ても混合が容易なペースト状となっている。また、融点
塩電解質粉末はその融点未満で混合されるため、液体化
しておらず、分離することなく均一に分散できる。従っ
て、金属粉末に保持されたリチウム負極中に溶融塩電解
質を分散した高性能のリチウム負極を製造することがで
きる。Action According to this method, lithium is liquefied because it is heated above the melting point, and is in a paste form that is easy to mix even if it is mixed with metal powder. Moreover, since the melting point salt electrolyte powder is mixed below its melting point, it is not liquefied and can be uniformly dispersed without separation. Therefore, a high-performance lithium negative electrode in which a molten salt electrolyte is dispersed in a lithium negative electrode held by metal powder can be manufactured.
実施例 以下、本発明の実施例を図を用いて説明する。第１図
は本発明による負極層の製造工程フローチャートの一例
である。まず、所定量のリチウムを不活性ガスの中から
選択したアルゴンガス雰囲気において、ステンレスルツ
ボに入れリチウムの融点（180℃）以上の320℃にて溶融
し、この液体リチウム中に保持材として比表面積が約50
m2/gである鉄粉を少量ずつ投入し、十分撹拌混合し所定
量までくりかえし投入混合を行う。この工程により液体
化しているリチウムは、鉄粉の表面に物理吸着により保
持されてゆき、流動性のないペースト状の物質となる。
本実施例では、リチウムと鉄粉の混合比率を重量比で、
20:80とした。また、高温で液体化しているリチウムは
酸素やチッ素，水素および水分等と激しく反応をするの
でこれらのガスが混入しない様十分配慮しなければなら
ず、本実施例でも例えば酸素濃度1ppm以下、露点−60℃
以下と厳重に管理している。次に、同様のアルゴンガス
雰囲気のままリチウムと鉄粉との混合物に重量比で10％
に当る溶融塩電解質粉末を投入し、十分混合して均一に
分散させる。溶融塩電解質粉末には150メッシュ以下に
ふるい分けされたKcl−LiCl共融塩を用いた。この溶融
塩電解質の融点は約352℃であるので、混合時の温度は
それ未満の320℃で行っている。もし、溶融塩電解質の
融点以上の温度で混合を行うと、溶融塩電解質は液体と
なってしまい、リチウムと鉄粉により成るペースト状物
質とは分離し、均一混合をすることができない。また、
リチウムの融点以下であるならば、リチウムは固化して
しまいペースト状混合物は固体となりこの場合にも両者
を混ぜることが不可能となる。従って、溶融塩電解質粉
末を混合する工程では、リチウムの融点以上で溶融塩電
解質の融点未満の温度範囲に保つことが大切である。こ
うして混合された物質は、アルゴン雰囲気中で放冷して
固体化し、その後、ドライエアー中に取り出してプレス
およびローラーによって圧延し0.4mmの厚みのシートに
加工した。そして、シートから所定形状の円板に打ち抜
き負極ディスクとし、この負極ディスクを鉄製カップに
入れ外周部をカシメ負極層とした。Example Hereinafter, an example of the present invention will be described with reference to the drawings. FIG. 1 is an example of a manufacturing process flowchart of a negative electrode layer according to the present invention. First, a predetermined amount of lithium is placed in a stainless crucible in an argon gas atmosphere selected from an inert gas and melted at 320 ° C. which is higher than the melting point (180 ° C.) of lithium. Is about 50
Add iron powder (m 2 / g) little by little, stir and mix well, and repeat feeding and mixing until a predetermined amount. Lithium liquefied in this step is retained on the surface of the iron powder by physical adsorption and becomes a paste-like substance having no fluidity.
In this embodiment, the mixing ratio of lithium and iron powder is by weight,
It was 20:80. In addition, since lithium that is liquefied at high temperature reacts violently with oxygen, nitrogen, hydrogen, water, etc., sufficient care must be taken so that these gases are not mixed in, and even in this embodiment, for example, the oxygen concentration is 1 ppm or less, Dew point -60 ° C
It is strictly managed as follows. Next, in a similar argon gas atmosphere, add 10% by weight to a mixture of lithium and iron powder.
The molten salt electrolyte powder corresponding to the above (3) is added, and they are thoroughly mixed and uniformly dispersed. As the molten salt electrolyte powder, Kcl-LiCl eutectic salt sieved to 150 mesh or less was used. Since the melting point of this molten salt electrolyte is about 352 ° C, the temperature during mixing is 320 ° C, which is lower than that. If mixing is performed at a temperature higher than the melting point of the molten salt electrolyte, the molten salt electrolyte becomes a liquid, and the paste-like substance composed of lithium and iron powder is separated and cannot be uniformly mixed. Also,
If it is below the melting point of lithium, the lithium will solidify and the paste-like mixture will become a solid, and in this case, it becomes impossible to mix both. Therefore, in the step of mixing the molten salt electrolyte powder, it is important to keep the temperature range above the melting point of lithium and below the melting point of the molten salt electrolyte. The materials thus mixed were allowed to cool in an argon atmosphere to solidify, then taken out in dry air and rolled by a press and a roller to be processed into a sheet having a thickness of 0.4 mm. Then, the sheet was punched out into a disc having a predetermined shape to form a negative electrode disk, and the negative electrode disk was put into an iron cup to form a crimped negative electrode layer on the outer peripheral portion.
第２図も本発明による実施例のフローチャートであ
る。この場合には、第１図のフローチャートと異なり鉄
粉と溶融塩電解質粉末を予め混合しておき、この混合粉
末をアルゴンガス雰囲気中で溶融してあるリチウム中に
少量づつ投入撹拌することによりリチウムを鉄粉に保持
固定化する工程と、溶融塩電解質粉末を分散させる工程
とを同時に行うものである。従って、この方式の場合は
第１図の場合よりも短い工程で製造でき、製造された負
極は同等の性能を発揮する。上記の工程以外は第１図の
方式と同じであり、また、設定温度や混合比率等もすべ
て第１図の場合と同様にした。FIG. 2 is also a flow chart of the embodiment according to the present invention. In this case, unlike the flow chart of FIG. 1, the iron powder and the molten salt electrolyte powder are mixed in advance, and the mixed powder is gradually added to the molten lithium in an argon gas atmosphere to stir the lithium powder. The step of holding and fixing the iron powder on the iron powder and the step of dispersing the molten salt electrolyte powder are simultaneously performed. Therefore, in the case of this system, it can be manufactured in a shorter process than in the case of FIG. 1, and the manufactured negative electrode exhibits the same performance. Except for the above steps, the method is the same as that of FIG. 1, and the set temperature, mixing ratio, etc. are all the same as in the case of FIG.
第３の実施例としては第３図のフローチャートに示し
た様に溶融塩電解質粉末を前もって溶融しているリチウ
ムに分散させておき、その後、保持材である鉄粉を混合
する方式である。この場合も他の工程および各種設定条
件は第１図，第２図の方式と同じとしている。第３図の
方式であると、保持材より先に溶融塩電解質粉末を分散
させるため、溶融リチウムのみの低粘度状態において溶
融塩電解質粉末を分散できるので比較的短時間に容易に
均一分散ができるのである。そして、製造された負極も
他の２種と何ら変ることはなかった。As a third embodiment, as shown in the flow chart of FIG. 3, molten salt electrolyte powder is dispersed in molten lithium in advance, and then iron powder as a holding material is mixed. Also in this case, the other steps and various setting conditions are the same as those in the system shown in FIGS. According to the method of FIG. 3, the molten salt electrolyte powder is dispersed before the holding material, so that the molten salt electrolyte powder can be dispersed in a low-viscosity state of only molten lithium, so that uniform dispersion can be easily performed in a relatively short time. Of. The produced negative electrode was no different from the other two types.
以上の様な本発明により製造された負極の性能を確認
するため、第４図に示す断面を有する積層形熱電池を試
作した。１は素電池で本発明による負極層と溶融塩電解
質を酸化マグネシウムに保持させた粉末の成型層である
電解質層および正極活物質として二硫化鉄を選び溶融塩
電解質粉末と微量のバインダーを混合した粉末成型層で
ある正極層から構成されている。素電池内に充填される
理論電気容量は負極に対し正極の方を十分に多くし、正
極に制限されることなく負極能力を比較できる様にし
た。２は素電池１を加熱し活性化するための発熱剤で、
還元剤である鉄粉と酸化剤である過塩素電カリウムの混
合物成型体である。素電池１と発熱剤２を交互に積層し
発電部積層体を構成した後その周囲を無機の断熱材３に
よって被い外装ケース４に挿入し、外装蓋５を圧入し外
装ケース４と外装蓋５を溶接して完全に密封状態とす
る。電池出力は６の＋出力端子と７の−出力端子から取
り出される。また、電池の起動には点火器入力端子８よ
り電池を通じ、点火器９に火炎を発生させて内部の発熱
剤２に着火させる電気式を用いた。In order to confirm the performance of the negative electrode manufactured according to the present invention as described above, a laminated thermal battery having a cross section shown in FIG. 4 was prototyped. Reference numeral 1 is a unit cell, which is a negative electrode layer according to the present invention, an electrolyte layer which is a molding layer of powder in which a molten salt electrolyte is held in magnesium oxide, and iron disulfide as a positive electrode active material. Molten salt electrolyte powder and a small amount of binder are mixed. It is composed of a positive electrode layer which is a powder molding layer. The theoretical electric capacity filled in the unit cell was set sufficiently larger in the positive electrode than in the negative electrode so that the negative electrode capacities could be compared without being limited by the positive electrode. 2 is a heating agent for heating and activating the unit cell 1,
It is a mixture molded body of iron powder that is a reducing agent and potassium perchlorate that is an oxidizing agent. After the unit cells 1 and the heat generating agent 2 are alternately laminated to form a power generation unit laminate, the periphery thereof is covered with the inorganic heat insulating material 3 and inserted into the outer case 4, and the outer cover 5 is press-fitted to the outer case 4 and the outer cover. 5 is welded to be completely sealed. The battery output is taken out from the positive output terminal of 6 and the negative output terminal of 7. The battery was started by an electric system in which a flame was generated in the igniter 9 through the battery from the igniter input terminal 8 to ignite the heat generating agent 2 inside.
以上の様に構成された積層形熱電池を、放電電流密度
700mA/cm2の定電流負荷にて定温中静止状態の放電を行
った。Using the laminated thermal battery configured as above, discharge current density
A constant current load of 700 mA / cm 2 was used to perform static discharge at a constant temperature.
第５図はその結果を示す放電曲線で、Ａが本発明によ
り製造された負極を用いた電池の場合、Ｂは比較の為に
従来の負極を用いた電池のものである。図で明らかな様
に、本発明により製造された負極を用いると、放電の後
半、負極内のリチウムが減少してきた時にも、負極内部
に溶融塩電解質が分散されているため、電解質層界面よ
り遠く離れた負極層の内部に存在するリチウムも効率よ
く電極反応に寄与でき、高い放電電圧を維持するので放
電持続時間が、Ｂで示す従来負極による熱電池よりも長
くできるものである。FIG. 5 is a discharge curve showing the results, where A is the battery using the negative electrode manufactured by the present invention, and B is the battery using the conventional negative electrode for comparison. As is clear from the figure, when the negative electrode manufactured according to the present invention is used, since the molten salt electrolyte is dispersed inside the negative electrode even when the amount of lithium in the negative electrode decreases in the latter half of discharge, Lithium present inside the anode layer far away can also contribute to the electrode reaction efficiently and maintain a high discharge voltage, so that the discharge duration can be made longer than that of the conventional negative electrode thermal battery shown by B.
発明の効果 以上の説明から明らかな様に、本発明により溶融塩電
解質を分散させたリチウム負極は、負極活物質の利用率
を高め、従来負極と同量の充填量であれば放電持続時間
が延長できるし、また、従来電池と同じ持続時間を有す
る熱電池を設計する場合には、負極活物質の充填量を減
少でき、小型軽量化が図れるという効果が得られる。な
お、本実施例では金属粉末として鉄粉について述べた
が、ステンレス鋼粉末、ニッケル粉末やニクロム粉末等
でも同様の効果が得られた。EFFECTS OF THE INVENTION As is clear from the above description, the lithium negative electrode in which the molten salt electrolyte is dispersed according to the present invention increases the utilization rate of the negative electrode active material, and the discharge duration is the same as the conventional negative electrode if the filling amount is the same. In addition, when a thermal battery having the same duration as a conventional battery can be designed, the filling amount of the negative electrode active material can be reduced, and the effect of reducing the size and weight can be obtained. In addition, although iron powder was described as the metal powder in the present embodiment, similar effects were obtained with stainless steel powder, nickel powder, nichrome powder, and the like.
第１図，第２図および第３図はそれぞれ本発明の実施例
の負極製造工程のフローチャート、第４図は本発明によ
り製造された負極の性能を評価するために試作した積層
形熱電池の縦断面図、第５図は第４図の積層形熱電池の
放電曲線を示す図である。 １……素電池、２……発熱剤、Ａ……本発明による負極
を用いた熱電池の放電曲線、Ｂ……従来の負極を用いた
熱電池の放電曲線。1, FIG. 2 and FIG. 3 are respectively a flow chart of the negative electrode manufacturing process of the embodiment of the present invention, and FIG. 4 is a prototype of a laminated thermal battery for evaluating the performance of the negative electrode manufactured by the present invention. FIG. 5 is a longitudinal sectional view showing the discharge curve of the laminated thermal battery of FIG. 1 ... Unit cell, 2 ... Exothermic agent, A ... Discharge curve of thermal battery using negative electrode according to the present invention, B ... Discharge curve of conventional thermal battery using negative electrode.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭61−230262（ＪＰ，Ａ) 特開 昭61−230263（ＪＰ，Ａ) 特開 昭58−48354（ＪＰ，Ａ) 米国特許4221849（ＵＳ，Ａ) ─────────────────────────────────────────────────── Continued from the front page (56) References JP-A-61-230262 (JP, A) JP-A-61-230263 (JP, A) JP-A-58-48354 (JP, A) US Patent 4221849 (US , A)
Claims (1)
合金化しない金属粉末と、溶融塩電解質粉末と、金属製
カップからなる負極の製造法であって、不活性ガス中に
おいてリチウムを溶融する工程と、金属粉末および溶融
塩電解質粉末をそれぞれ単独で溶融リチウムに添加混合
するか、もしくはこれら両者の混合粉末を溶融リチウム
に添加混合する工程と、混合物を冷却固化する工程と、
その後乾燥雰囲気中でシート化する工程と打抜き加工す
る工程と金属製カップに装填する工程を経る負極の製造
法において、溶融リチウムに粉末を添加混合する工程の
温度範囲がリチウムの融点以上、溶融塩電解質の融点未
満である熱電池用負極の製造法。1. A method for producing a negative electrode comprising lithium, which is a negative electrode active material, metal powder not alloyed with lithium, molten salt electrolyte powder, and a metal cup, wherein lithium is melted in an inert gas. A step, adding and mixing the metal powder and the molten salt electrolyte powder individually to the molten lithium, or a step of adding and mixing a mixed powder of these both to the molten lithium; and a step of cooling and solidifying the mixture,
After that, in the method of manufacturing the negative electrode that includes the step of forming into a sheet in a dry atmosphere, the step of punching, and the step of loading into a metal cup, the temperature range of the step of adding and mixing the powder to the molten lithium is equal to or higher than the melting point of lithium, the molten salt. A method for producing a negative electrode for a thermal battery, which has a melting point lower than that of an electrolyte.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62281221A JP2563386B2 (en) | 1987-11-06 | 1987-11-06 | Method for manufacturing negative electrode for thermal battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62281221A JP2563386B2 (en) | 1987-11-06 | 1987-11-06 | Method for manufacturing negative electrode for thermal battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01122562A JPH01122562A (en) | 1989-05-15 |
| JP2563386B2 true JP2563386B2 (en) | 1996-12-11 |
Family
ID=17636053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62281221A Expired - Lifetime JP2563386B2 (en) | 1987-11-06 | 1987-11-06 | Method for manufacturing negative electrode for thermal battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2563386B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101484042B1 (en) | 2014-07-23 | 2015-01-19 | 국방과학연구소 | Manufacturing method for thin metal foam impregnated with lithium as an anode for thermally activated reserve batteries |
| WO2020226241A1 (en) * | 2019-05-07 | 2020-11-12 | 국방과학연구소 | Negative electrode for thermal battery, apparatus for manufacturing negative electrode for thermal battery, and method for manufacturing negative electrode for thermal battery |
| CN110534697B (en) * | 2019-09-11 | 2022-03-01 | 中国工程物理研究院电子工程研究所 | Thermal battery single battery and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4221849A (en) | 1979-04-27 | 1980-09-09 | Catalyst Research Corporation | Iron-lithium anode for thermal batteries and thermal batteries made therefrom |
-
1987
- 1987-11-06 JP JP62281221A patent/JP2563386B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4221849A (en) | 1979-04-27 | 1980-09-09 | Catalyst Research Corporation | Iron-lithium anode for thermal batteries and thermal batteries made therefrom |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01122562A (en) | 1989-05-15 |
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