JP2000040522A - Sodium-sulfur battery - Google Patents
Sodium-sulfur batteryInfo
- Publication number
- JP2000040522A JP2000040522A JP10208288A JP20828898A JP2000040522A JP 2000040522 A JP2000040522 A JP 2000040522A JP 10208288 A JP10208288 A JP 10208288A JP 20828898 A JP20828898 A JP 20828898A JP 2000040522 A JP2000040522 A JP 2000040522A
- Authority
- JP
- Japan
- Prior art keywords
- sodium
- negative electrode
- positive electrode
- chamber
- solid 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.)
- Pending
Links
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
- Secondary Cells (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はナトリウム−硫黄電
池に関するもので、さらに詳しく言えば、ナトリウムイ
オン伝導性の固体電解質管の内部を負極室、外部を正極
室とし、負極室から固体電解質管の表面にナトリウムを
均一に供給することができる負極室の構造に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sodium-sulfur battery, and more particularly, to a sodium ion conductive solid electrolyte tube having a negative electrode compartment inside and a positive electrode compartment outside the solid electrolyte tube. The present invention relates to a structure of a negative electrode chamber capable of uniformly supplying sodium to the surface.
【０００２】[0002]
【従来の技術】ナトリウムイオン伝導性の固体電解質管
の内部に負極室を、外部に正極室を形成してなるナトリ
ウム−硫黄電池は、約３００℃の温度下で作動させる高
温型電池であり、その構造は、負極活物質としてのナト
リウムが収納される負極室は、前記固体電解質管の開口
部に接合されたα−アルミナリングの一方の面に接合さ
れた負極蓋と該負極蓋に溶接された負極端子とによって
密閉され、正極活物質としての硫黄が収納される正極室
は、前記α−アルミナリングの他方の面に接合された正
極蓋と該正極蓋に溶接された電槽とによって密閉されて
なる。2. Description of the Related Art A sodium-sulfur battery in which a negative electrode chamber is formed inside a sodium ion conductive solid electrolyte tube and a positive electrode chamber is formed outside is a high temperature type battery operated at a temperature of about 300 ° C. The structure is such that a negative electrode chamber in which sodium as a negative electrode active material is housed is welded to a negative electrode lid joined to one surface of an α-alumina ring joined to an opening of the solid electrolyte tube, and the negative electrode lid. The positive electrode chamber sealed with the negative electrode terminal and containing sulfur as a positive electrode active material is sealed with a positive electrode lid joined to the other surface of the α-alumina ring and a battery case welded to the positive electrode lid. Be done.
【０００３】このようなナトリウム−硫黄電池には、動
作中の固体電解質管の破損により、ナトリウムと硫黄と
が直接反応し、その反応熱によって固体電解質管の破損
が拡大し、前述した直接反応の領域がさらに拡大しない
ように種々の安全対策が施されている。[0003] In such a sodium-sulfur battery, sodium and sulfur directly react with each other due to breakage of the solid electrolyte tube during operation, and the damage of the solid electrolyte tube increases due to the heat of the reaction. Various security measures have been taken to prevent the area from further expanding.
【０００４】たとえば、特開平２−１２６５７１号公報
（特公平７−８２８７７号公報）には、固体電解質管の
内部の陰極室内にナトリウム容器を配置し、このナトリ
ウム容器には陰極室内に前記ナトリウムを供給するため
の孔を設けるとともに陰極活物質としてのナトリウムと
前記ナトリウムを押し出すための不活性ガスが封入さ
れ、充電時および放電時に、前記固体電解質管の外部の
陽極室内の圧力が固体電解質管とナトリウム容器との間
隙内の圧力よりも常時高くなるようにしたものが開示さ
れている。これにより、固体電解質管が破損し、圧力差
によって破損部から陽極室内の硫黄が陰極室内に流入し
ても、この硫黄は陰極室内のナトリウムと反応して多硫
化ナトリウムとなって前記破損部を閉塞してしまうの
で、ナトリウムと硫黄との直接反応を最小限にすること
ができる。For example, in Japanese Patent Application Laid-Open No. 2-126571 (JP-B-7-82877), a sodium container is disposed in a cathode chamber inside a solid electrolyte tube. A hole for supply is provided and sodium as a cathode active material and an inert gas for extruding the sodium are sealed, and at the time of charging and discharging, the pressure in the anode chamber outside the solid electrolyte tube is increased by the solid electrolyte tube. There is disclosed an apparatus in which the pressure is always higher than the pressure in the gap with the sodium container. As a result, even if the solid electrolyte tube is damaged and sulfur in the anode chamber flows into the cathode chamber from the damaged part due to a pressure difference, this sulfur reacts with sodium in the cathode chamber to form sodium polysulfide, and the damaged part is damaged. Because of the plugging, the direct reaction between sodium and sulfur can be minimized.
【０００５】また、前記公報には、ナトリウム容器と陰
極金具との間に付勢部材を介装することが開示されてい
る。これにより、ナトリウム容器と陰極金具との間の電
気的な接続が良好にできるとともに、ナトリウムを固体
電解質管の内面に均一に供給することができる。[0005] The above-mentioned publication discloses that an urging member is interposed between the sodium container and the cathode fitting. This makes it possible to improve the electrical connection between the sodium container and the cathode fitting and to supply sodium uniformly to the inner surface of the solid electrolyte tube.
【０００６】[0006]
【発明が解決しようとする課題】上記した公報に開示さ
れたナトリウム−硫黄電池では、ナトリウムを供給する
ための孔がナトリウム容器の底部に設けられているた
め、ナトリウムはナトリウム容器の底部の孔からナトリ
ウム容器と陰極室内の有底管状隔壁との間を上方に移動
し、固体電解質管の上部から固体電解質管の内面に供給
されるため、陰極室の上部に滞留するガスを巻き込んで
しまうことがあり、それにより、固体電解質管の内面に
ナトリウムが均一に供給されず、充放電に寄与する固体
電解質管の内面の面積が減少し、電池の内部抵抗の増大
や放電容量の低下をもたらすという問題があった。In the sodium-sulfur battery disclosed in the above-mentioned publication, a hole for supplying sodium is provided at the bottom of the sodium container, so that sodium is supplied from the hole at the bottom of the sodium container. It moves upward between the sodium container and the bottomed tubular partition in the cathode chamber, and is supplied from the upper part of the solid electrolyte tube to the inner surface of the solid electrolyte tube, so that the gas remaining in the upper part of the cathode chamber may be entrained. There is a problem that sodium is not supplied uniformly to the inner surface of the solid electrolyte tube, thereby reducing the area of the inner surface of the solid electrolyte tube contributing to charge and discharge, thereby increasing the internal resistance of the battery and decreasing the discharge capacity. was there.
【０００７】また、上記した、底部にナトリウムを供給
するための孔を設けたカートリッジを陰極室に設置する
方法は、特開平８−１０６９１８号公報に記載された如
く、最初に、孔を上にしたカートリッジの孔からナトリ
ウムを注入して固化させ、次に、このカートリッジを孔
を下にして陰極室に配して不活性ガス雰囲気下で陰極室
を密閉し、次に、全体を加熱して溶融したナトリウムを
カートリッジの下方に移動させるとともに不活性ガスを
カートリッジの上方に移動させるため、ナトリウム−硫
黄電池の製造工程が複雑になるという問題があった。[0007] Further, as described in JP-A-8-106918, the above-described method of installing a cartridge having a hole for supplying sodium at the bottom thereof in the cathode chamber is described above. Sodium is injected and solidified from the hole of the cartridge, and the cartridge is placed in the cathode chamber with the hole down, the cathode chamber is sealed under an inert gas atmosphere, and then the whole is heated. Since the molten sodium is moved below the cartridge and the inert gas is moved above the cartridge, there is a problem that the manufacturing process of the sodium-sulfur battery becomes complicated.
【０００８】また、上記した公報に開示されたナトリウ
ム−硫黄電池では、ナトリウム容器と陰極金具との間に
付勢部材を介装する際に、陰極室の上部にガスが滞留し
やすく、付勢部材によってナトリウム容器と陰極金具と
の間の電気的な接続が良好にできても、前述したガスの
滞留によってナトリウム容器と陰極金具との間の電気抵
抗が高くなるという問題があった。Further, in the sodium-sulfur battery disclosed in the above-mentioned publication, when an urging member is interposed between the sodium container and the cathode fitting, gas is likely to stay in the upper portion of the cathode chamber, and Even if the member makes good electrical connection between the sodium container and the cathode metal fitting, there is a problem that the electric resistance between the sodium container and the cathode metal fitting increases due to the above-mentioned stagnation of the gas.
【０００９】また、上記した公報に開示されたナトリウ
ム−硫黄電池では、陰極室の上部のナトリウムは比較的
広い領域内にフリーな状態で存在するため、固体電解質
管の上部が破損した場合には、この領域内のナトリウム
が硫黄との直接反応に寄与して固体電解質管の破損を拡
大する危険性を有していた。Further, in the sodium-sulfur battery disclosed in the above-mentioned publication, since sodium in the upper part of the cathode chamber exists in a free state in a relatively wide area, when the upper part of the solid electrolyte tube is broken, However, there is a danger that sodium in this region contributes to a direct reaction with sulfur and causes damage to the solid electrolyte tube to be enlarged.
【００１０】[0010]
【課題を解決するための手段】上記課題を解決するた
め、請求項１記載の発明は、開口部にα−アルミナリン
グが接合されたナトリウムイオン伝導性の固体電解質管
の内部に負極室を、外部に正極室を形成し、前記α−ア
ルミナリングの一方の面に接合した負極蓋と該負極蓋に
溶接した負極端子で前記負極室を密閉するとともに、前
記α−アルミナリングの他方の面に接合した正極蓋と該
正極蓋に溶接した電槽で前記正極室を密閉してなるナト
リウム−硫黄電池において、前記負極室に、負極活物質
としてのナトリウムと前記ナトリウムを押し出すための
不活性ガスが収納され、上部に孔を有するナトリウム保
持管が、下方が開放された外筒に包囲されて配され、か
つ前記外筒と負極端子との間に金属繊維を充填したこと
を特徴とするものであり、これにより、負極活物質とし
てのナトリウムは、ナトリウム保持管の上部の孔からナ
トリウム保持管の外面と外筒との間を通って下方に移動
し、外筒の下方から固体電解質管の内面に供給されるた
め、ナトリウムが移動する過程でガスを巻き込むことが
なく、固体電解質管の内面にナトリウムを均一に供給す
ることができるとともに、外筒と負極端子との間に充填
した金属繊維によって、外筒と負極端子との間の電気抵
抗を小さくすることができ、外筒と負極端子との間にナ
トリウムがフリーな状態で存在しないようにすることが
できる。In order to solve the above-mentioned problems, the invention according to claim 1 is characterized in that a negative electrode chamber is provided inside a sodium ion conductive solid electrolyte tube in which an α-alumina ring is joined to an opening. A positive electrode chamber is formed outside, and the negative electrode chamber is sealed with a negative electrode lid joined to one surface of the α-alumina ring and a negative electrode terminal welded to the negative electrode lid, and the other surface of the α-alumina ring is sealed. In a sodium-sulfur battery in which the positive electrode chamber is sealed with a bonded positive electrode lid and a battery case welded to the positive electrode lid, in the negative electrode chamber, sodium as a negative electrode active material and an inert gas for extruding the sodium are used. A sodium holding tube that is housed and has a hole at the top is arranged so as to be surrounded by an outer cylinder whose lower part is open, and is filled with metal fibers between the outer cylinder and the negative electrode terminal. Ah Thus, sodium as the negative electrode active material moves downward from the upper hole of the sodium holding tube through the space between the outer surface of the sodium holding tube and the outer cylinder, and from the lower part of the outer cylinder to the inner surface of the solid electrolyte tube. Because it is supplied, sodium can be uniformly supplied to the inner surface of the solid electrolyte tube without entraining gas in the process of moving sodium, and the metal fibers filled between the outer cylinder and the negative electrode terminal, Electric resistance between the outer cylinder and the negative electrode terminal can be reduced, and sodium can be prevented from being present between the outer cylinder and the negative electrode terminal in a free state.
【００１１】[0011]
【発明の実施の形態】以下、本発明をその実施の形態に
基づいて説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described based on its embodiments.
【００１２】図１は本発明の実施の形態に係るナトリウ
ム−硫黄電池の断面図である。FIG. 1 is a sectional view of a sodium-sulfur battery according to an embodiment of the present invention.
【００１３】図１に示したナトリウム−硫黄電池の特徴
は、ナトリウムイオン伝導性の固体電解質管１の開口部
にα−アルミナリング２をガラス接合し、このα−アル
ミナリング２の一方の面に負極蓋３を熱圧接合し、前記
α−アルミナリング２の他方の面に正極蓋４を熱圧接合
し、前記負極蓋３に負極端子５を溶接して固体電解質管
１の内部の負極室を密閉するとともに、前記正極蓋４
に、硫黄成形体６を内挿した電槽７を溶接して固体電解
質管１と電槽７との間の正極室を密閉したものにおい
て、前記負極室に、負極活物質としてのナトリウム８と
前記ナトリウム８を押し出すための不活性ガス９とが収
納され、上部に孔１０Ａを有するナトリウム保持管１０
が、下方が開放された外筒１１に包囲されて配され、か
つ前記外筒１１と負極端子５との間に金属繊維１２を充
填したことである。The feature of the sodium-sulfur battery shown in FIG. 1 is that an α-alumina ring 2 is glass-bonded to an opening of a sodium ion-conductive solid electrolyte tube 1 and one surface of the α-alumina ring 2 The negative electrode cover 3 is thermocompression bonded, the positive electrode cover 4 is thermocompression bonded to the other surface of the α-alumina ring 2, and the negative electrode terminal 5 is welded to the negative electrode cover 3 to form a negative electrode chamber inside the solid electrolyte tube 1. And the positive electrode cover 4
A battery case 7 in which a sulfur molded body 6 is inserted is welded to seal a positive electrode chamber between the solid electrolyte tube 1 and the battery case 7, and the negative electrode chamber contains sodium 8 as a negative electrode active material. An inert gas 9 for pushing out the sodium 8 is accommodated therein, and a sodium holding tube 10 having a hole 10A in an upper portion thereof.
However, a metal fiber 12 is filled between the outer cylinder 11 and the negative electrode terminal 5 while being surrounded by the outer cylinder 11 whose lower part is open.
【００１４】前記ナトリウム保持管１０、外筒１１とし
ては、耐熱性、耐久性にすぐれた材料からなるものがよ
く、特にアルミニウムやステンレスが好ましい。The sodium holding tube 10 and the outer tube 11 are preferably made of a material having excellent heat resistance and durability. Aluminum and stainless steel are particularly preferable.
【００１５】前記不活性ガス９としては、負極活物質と
してのナトリウム８と反応しにくい窒素ガス、アルゴン
ガス、ヘリウムガスが好ましい。The inert gas 9 is preferably a nitrogen gas, an argon gas, or a helium gas which hardly reacts with sodium 8 as a negative electrode active material.
【００１６】前記金属繊維１２としては、耐熱性、耐久
性にすぐれた材料からなるものがよく、特にアルミニウ
ムやステンレスの繊維が好ましい。The metal fiber 12 is preferably made of a material having excellent heat resistance and durability, and is preferably made of aluminum or stainless steel.
【００１７】このような構成のナトリウム−硫黄電池
を、約３００℃程度まで昇温すると、ナトリウム保持管
１０内の不活性ガス９の圧力が上昇し、負極活物質とし
てのナトリウム８はナトリウム保持管１０の上部の孔１
０Ａから押し出され、ナトリウム保持管１０の外面と外
筒１１との間を通って下方に移動し、開放された外筒１
１の下方から外筒１１の外面と固体電解質管１の内面の
間に供給されるとともに、負極端子５と外筒１１との間
の金属繊維１２に供給されて負極端子５と外筒１１との
間が電気的に接続された状態になる。このため、ナトリ
ウム８が移動する過程にガスの滞留がなく、ガスを巻き
込むことによって固体電解質管の内面にナトリウムが不
均一に供給されるといったことが防止できるとともに、
金属繊維１２によって、外筒１１と負極端子５との間の
電気抵抗を小さくすることができ、外筒１１と負極端子
５との間にナトリウム８がフリーな状態で存在しないよ
うにすることができる。When the temperature of the sodium-sulfur battery having such a configuration is raised to about 300 ° C., the pressure of the inert gas 9 in the sodium holding tube 10 increases, and the sodium 8 as the negative electrode active material is removed from the sodium holding tube. Hole 1 at the top of 10
0A, is moved downward through the space between the outer surface of the sodium holding tube 10 and the outer tube 11, and is opened.
1 and between the outer surface of the outer tube 11 and the inner surface of the solid electrolyte tube 1 from the lower surface of the outer tube 11 and to the metal fibers 12 between the negative terminal 5 and the outer tube 11 to be supplied to the negative terminal 5 and the outer tube 11. Are electrically connected. For this reason, there is no gas stagnation in the process of moving the sodium 8, and it is possible to prevent the sodium from being supplied unevenly to the inner surface of the solid electrolyte tube by entraining the gas,
The electrical resistance between the outer cylinder 11 and the negative electrode terminal 5 can be reduced by the metal fiber 12, so that sodium 8 does not exist in a free state between the outer cylinder 11 and the negative electrode terminal 5. it can.
【００１８】また、このような構成のナトリウム−硫黄
電池では、負極室内にナトリウム保持管１０を配置し、
このナトリウム保持管１０内を真空にした後、一定の不
活性ガス雰囲気下で定量したナトリウム８を注入し、そ
の後、ナトリウム保持管１０を包囲するように外筒１１
を配してから負極室を密閉するだけでよいので、その製
造工程も簡素化できる。In the sodium-sulfur battery having such a configuration, the sodium holding tube 10 is disposed in the negative electrode chamber,
After the inside of the sodium holding tube 10 is evacuated, a fixed amount of sodium 8 is injected under a certain inert gas atmosphere, and then the outer cylinder 11 is surrounded so as to surround the sodium holding tube 10.
It is only necessary to seal the negative electrode chamber after disposing, so that the manufacturing process can be simplified.
【００１９】次に、上記した本発明のナトリウム−硫黄
電池Ａ1 ，Ｂ1 ，Ｃ1 と、金属繊維１２に代えて付勢部
材を用いた従来のナトリウム−硫黄電池Ａ2 ，Ｂ2 ，Ｃ
2 とを作製し、充放電サイクル数が１，５，１０，１
５，２０サイクル時における内部抵抗を調査し、結果を
表１に示す。Next, the above-mentioned sodium-sulfur batteries A 1 , B 1 , C 1 of the present invention and conventional sodium-sulfur batteries A 2 , B 2 , C 1 using an urging member in place of the metal fiber 12.
2 and the number of charge / discharge cycles is 1, 5, 10, 1
The internal resistance at 5 and 20 cycles was investigated and the results are shown in Table 1.
【００２０】[0020]
【表１】 [Table 1]
【００２１】表１から、本発明のナトリウム−硫黄電池
Ａ1 ，Ｂ1 ，Ｃ1 は、従来のナトリウム−硫黄電池
Ａ2 ，Ｂ2 ，Ｃ2 に比べて内部抵抗が小さく、そのバラ
ツキも小さくなっていることがわかった。From Table 1, it can be seen that the sodium-sulfur batteries A 1 , B 1 , C 1 of the present invention have smaller internal resistance and less variation than the conventional sodium-sulfur batteries A 2 , B 2 , C 2. It turned out that it was.
【００２２】次に、上記した２０サイクルの充放電サイ
クル試験を行った後の本発明のナトリウム−硫黄電池Ａ
1 ，Ｂ1 ，Ｃ1 と、従来のナトリウム−硫黄電池Ａ2 ，
Ｂ2，Ｃ2 とに対して過充電試験を行ってその固体電解
質管を破損させ、その時の温度上昇を調査し、結果を表
２に示す。Next, the sodium-sulfur battery A of the present invention after the above-described 20-cycle charge / discharge cycle test was performed.
1 , B 1 , C 1 and a conventional sodium-sulfur battery A 2 ,
An overcharge test was performed on B 2 and C 2 to break the solid electrolyte tube, and the temperature rise at that time was investigated. The results are shown in Table 2.
【００２３】[0023]
【表２】 [Table 2]
【００２４】表２から、本発明のナトリウム−硫黄電池
Ａ1 ，Ｂ1 ，Ｃ1 は、従来のナトリウム−硫黄電池
Ａ2 ，Ｂ2 ，Ｃ2 に比べて温度上昇が小さいことがわか
った。From Table 2, it was found that the sodium-sulfur batteries A 1 , B 1 , and C 1 of the present invention exhibited a smaller temperature rise than the conventional sodium-sulfur batteries A 2 , B 2 , and C 2 .
【００２５】[0025]
【発明の効果】上記した如く、本発明は、固体電解質管
の内面に均一にナトリウムが供給でき、外筒と負極端子
との間の電気抵抗が小さくできるので、内部抵抗が小さ
いナトリウム−硫黄電池を得るのに寄与することができ
るとともに、外筒と負極端子との間にナトリウムがフリ
ーな状態で存在しないようにすることができるので、安
全性が高いナトリウム−硫黄電池を得るのに寄与するこ
とができ、しかも負極室にナトリウム保持管を配置する
工程も簡素化できるので、その製造工程の簡素化にも寄
与することができる。As described above, the present invention provides a sodium-sulfur battery having a low internal resistance because sodium can be uniformly supplied to the inner surface of the solid electrolyte tube and the electric resistance between the outer cylinder and the negative electrode terminal can be reduced. In addition, it is possible to prevent sodium from being present in a free state between the outer cylinder and the negative electrode terminal, thereby contributing to obtaining a highly safe sodium-sulfur battery. In addition, since the step of disposing the sodium holding tube in the negative electrode chamber can be simplified, the manufacturing process can be simplified.
【図１】本発明のナトリウム−硫黄電池の断面図であ
る。FIG. 1 is a sectional view of a sodium-sulfur battery of the present invention.
１ 固体電解質管 ２ α−アルミナリング ３ 負極蓋 ４ 正極蓋 ５ 負極端子 ６ 硫黄成形体 ７ 電槽 ８ ナトリウム ９ 不活性ガス １０ ナトリウム保持管 １１ 外筒 １２ 金属繊維 REFERENCE SIGNS LIST 1 solid electrolyte tube 2 α-alumina ring 3 negative electrode cover 4 positive electrode cover 5 negative electrode terminal 6 sulfur molded body 7 battery case 8 sodium 9 inert gas 10 sodium holding tube 11 outer cylinder 12 metal fiber
Claims (1)
たナトリウムイオン伝導性の固体電解質管の内部に負極
室を、外部に正極室を形成し、前記α−アルミナリング
の一方の面に接合した負極蓋と該負極蓋に溶接した負極
端子で前記負極室を密閉するとともに、前記α−アルミ
ナリングの他方の面に接合した正極蓋と該正極蓋に溶接
した電槽で前記正極室を密閉してなるナトリウム−硫黄
電池において、前記負極室に、負極活物質としてのナト
リウムと前記ナトリウムを押し出すための不活性ガスと
が収納され、上部に孔を有するナトリウム保持管が、下
方が開放された外筒に包囲されて配され、かつ前記外筒
と負極端子との間に金属繊維を充填したことを特徴とす
るナトリウム−硫黄電池。A negative electrode chamber is formed inside a sodium ion conductive solid electrolyte tube having an α-alumina ring joined to an opening, and a positive electrode chamber is formed outside, and joined to one surface of the α-alumina ring. The negative electrode chamber was sealed with the negative electrode lid and the negative electrode terminal welded to the negative electrode lid, and the positive electrode chamber was sealed with a positive electrode lid joined to the other surface of the α-alumina ring and a battery case welded to the positive electrode lid. In the sodium-sulfur battery thus obtained, sodium as an anode active material and an inert gas for extruding the sodium are accommodated in the anode chamber, and a sodium holding tube having a hole at an upper portion is opened at a lower portion. A sodium-sulfur battery surrounded by an outer cylinder and filled with metal fibers between the outer cylinder and the negative electrode terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10208288A JP2000040522A (en) | 1998-07-23 | 1998-07-23 | Sodium-sulfur battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10208288A JP2000040522A (en) | 1998-07-23 | 1998-07-23 | Sodium-sulfur battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000040522A true JP2000040522A (en) | 2000-02-08 |
Family
ID=16553778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10208288A Pending JP2000040522A (en) | 1998-07-23 | 1998-07-23 | Sodium-sulfur battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000040522A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001035527A (en) * | 1999-07-22 | 2001-02-09 | Ngk Spark Plug Co Ltd | Insulating ring and manufacture thereof |
| WO2018138740A1 (en) * | 2017-01-30 | 2018-08-02 | R-Cube Energy Storage System LLP | High temperature batteries |
| CN114843679A (en) * | 2022-04-07 | 2022-08-02 | 东莞市沃泰通新能源有限公司 | High-temperature-resistant sodium ion cylindrical battery |
-
1998
- 1998-07-23 JP JP10208288A patent/JP2000040522A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001035527A (en) * | 1999-07-22 | 2001-02-09 | Ngk Spark Plug Co Ltd | Insulating ring and manufacture thereof |
| WO2018138740A1 (en) * | 2017-01-30 | 2018-08-02 | R-Cube Energy Storage System LLP | High temperature batteries |
| CN114843679A (en) * | 2022-04-07 | 2022-08-02 | 东莞市沃泰通新能源有限公司 | High-temperature-resistant sodium ion cylindrical battery |
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