JPH08293322A - Sodium-sulfur battery - Google Patents
Sodium-sulfur batteryInfo
- Publication number
- JPH08293322A JPH08293322A JP7096516A JP9651695A JPH08293322A JP H08293322 A JPH08293322 A JP H08293322A JP 7096516 A JP7096516 A JP 7096516A JP 9651695 A JP9651695 A JP 9651695A JP H08293322 A JPH08293322 A JP H08293322A
- Authority
- JP
- Japan
- Prior art keywords
- positive electrode
- sodium
- battery
- active material
- electrode active
- 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)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はナトリウム・硫黄電池の
寿命または信頼性向上に係り、特に、夜間電力貯蔵用や
電気自動車用の大電力貯蔵用のナトリウム・硫黄電池に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improving the life or reliability of a sodium-sulfur battery, and more particularly to a sodium-sulfur battery for storing electric power at night and for storing large electric power for electric vehicles.
【０００２】[0002]
【従来の技術】ナトリウム・硫黄電池（Ｎａ／Ｓ電池）
は、特開平5−290880 号公報には、図３に示すように、
正極活物質と正極容器母材との界面接触を防止するた
め、正極容器の母材表面に溶射や拡散及びコーティング
等により耐食性の被覆層を形成させていた。しかし、こ
の構造では、電池製作過程で、正極容器母材に被覆層の
表面処理後に溶接等で電池の組立をするため、被覆層に
傷や剥離が生じて母材が露出し、その母材と正極活物質
が界面接触して、その部分から正極容器を腐食させる問
題があった。2. Description of the Related Art Sodium-sulfur battery (Na / S battery)
In Japanese Patent Laid-Open No. 5-290880, as shown in FIG.
In order to prevent interfacial contact between the positive electrode active material and the base material of the positive electrode container, a corrosion-resistant coating layer is formed on the surface of the base material of the positive electrode container by thermal spraying, diffusion, coating, or the like. However, in this structure, since the battery is assembled by welding or the like after the surface treatment of the coating layer on the positive electrode container base material in the battery manufacturing process, the base material is exposed due to scratches or peeling of the coating layer, and the base material is exposed. There is a problem that the positive electrode active material and the positive electrode active material come into interface contact with each other and corrode the positive electrode container from that portion.
【０００３】[0003]
【発明が解決しようとする課題】上記従来技術は、電池
組立時の正極容器母材露出による正極容器の腐食防止に
ついて考慮がされておらず、母材と正極活物質の界面接
触により正極容器を腐食させる問題があった。The above-mentioned prior art does not consider prevention of corrosion of the positive electrode container due to exposure of the positive electrode container base material during battery assembly, and the positive electrode container is formed by interfacial contact between the base material and the positive electrode active material. There was a problem of corrosion.
【０００４】本発明の目的は、正極活物質と正極容器と
の界面接触をなくして正極容器の腐食を防止するナトリ
ウム・硫黄電池を提供することにある。An object of the present invention is to provide a sodium-sulfur battery that prevents the positive electrode container from corroding by eliminating the interface contact between the positive electrode active material and the positive electrode container.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するた
め、本発明は正極容器内に正極成形体を収納する耐食性
の内容器と、正極成形体上部にベーパ浸入防止体を装着
する。In order to achieve the above object, the present invention comprises a corrosion-resistant inner container for accommodating a positive electrode molded body in a positive electrode container, and a vapor penetration preventive member on the positive electrode molded body.
【０００６】[0006]
【作用】本発明は、正極容器内に耐食性の内容器とベー
パ浸入防止体を設けたため、電池の製作を容易にでき
る。また、固体電解質管と電気絶縁材との接着部と、電
気絶縁材と正極容器との接着部にも正極活物質の浸入を
防止して、それらの部分の腐食防止もでき、電池の寿命
や安全性が向上する。According to the present invention, since the positive electrode container is provided with the corrosion-resistant inner container and the vapor penetration preventing member, the battery can be easily manufactured. In addition, the positive electrode active material can be prevented from infiltrating into the bonded portion between the solid electrolyte tube and the electrical insulating material and the bonded portion between the electrical insulating material and the positive electrode container, and the corrosion of those parts can be prevented, and the life of the battery can be shortened. Safety is improved.
【０００７】[0007]
【実施例】以下、本発明の一実施例を詳細に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below.
【０００８】図１は本発明のナトリウム・硫黄電池の断
面図である。ナトリウム・硫黄電池は正極容器１と負極
容器２との間に、固体電解質管４並びに電気絶縁材３を
設けて隔壁兼電解質とし、負極容器２内に負極活物質５
のナトリウム（Ｎａ），正極容器１内に正極活物質７の
硫黄（Ｓ）または多硫化ナトリウム（Ｎａ2 ＳX ）をそ
れぞれ充填して電池を構成する。FIG. 1 is a sectional view of the sodium-sulfur battery of the present invention. In the sodium / sulfur battery, a solid electrolyte tube 4 and an electric insulating material 3 are provided between the positive electrode container 1 and the negative electrode container 2 to serve as a partition and an electrolyte, and the negative electrode active material 5 is contained in the negative electrode container 2.
Of sodium (Na), and the positive electrode container 1 is filled with sulfur (S) or sodium polysulfide (Na 2 S X ) of the positive electrode active material 7 to form a battery.
【０００９】正極は、ＳまたはＮａ2 ＳX と導電材から
なる正極成形体７を収納する内容器８と、正極成形体７
の上部空間にベーパ浸入防止体９で構成する。内容器８
の形状は底有状で、材質は、正極活物質に対して耐食性
を有する緻密なカーボン材やアルミナ材等がよい。ま
た、内容器の上端は開口であり、正極活物質の飛散と、
正極容器と内容器との隙間への正極活物質の浸入を防止
するため、主に充填のためのベーパ浸入防止体を装着す
る。ベーパ浸入防止体の材質には、同様にカーボン材や
アルミナ材がよいが、内容器の材質をアルミナとした場
合には、正極の導電性を確保するため、ベーパ浸入防止
体の材質はカーボン材等の導電材とする必要がある。ベ
ーパ浸入防止体の素材は、粉末，焼結，繊維等の何れで
もよい。負極は導電性を得るために電極棒６を装着す
る。The positive electrode includes an inner container 8 for accommodating a positive electrode molded body 7 made of S or Na 2 S X and a conductive material, and a positive electrode molded body 7.
A vapor intrusion prevention member 9 is provided in the upper space. Inner container 8
Is shaped like a bottom, and the material is preferably a dense carbon material or alumina material having corrosion resistance to the positive electrode active material. Further, the upper end of the inner container is an opening, and when the positive electrode active material is scattered,
In order to prevent the positive electrode active material from penetrating into the gap between the positive electrode container and the inner container, a vapor infiltration preventer for filling is mainly attached. Similarly, the material of the vapor intrusion prevention body is preferably carbon material or alumina material, but when the inner container is made of alumina, the vapor infiltration prevention body is made of carbon material in order to ensure the conductivity of the positive electrode. It is necessary to use a conductive material such as. The material for the vapor penetration preventing body may be any of powder, sintering, fiber and the like. An electrode rod 6 is attached to the negative electrode to obtain conductivity.
【００１０】本発明の他の実施例を図２に示す。Another embodiment of the present invention is shown in FIG.
【００１１】図２が図１と異なる点は、正極容器と内容
器との間に緩衝体１０を装着したことにある。The difference between FIG. 2 and FIG. 1 is that a shock absorber 10 is mounted between the positive electrode container and the inner container.
【００１２】緩衝体１０の装着目的は、電池の昇降温時
の正極成形体の膨張を吸収して、固体電解質管に加わる
応力を緩和するためである。緩衝体の材質には、弾力性
と導電性を有する繊維状の金属または非金属がよい。こ
の構造により、図１よりも安全性を向上できる。The purpose of mounting the buffer body 10 is to absorb the expansion of the positive electrode molded body when the temperature of the battery is raised or lowered, and to relieve the stress applied to the solid electrolyte tube. The material of the buffer is preferably fibrous metal or non-metal having elasticity and conductivity. With this structure, safety can be improved as compared with FIG.
【００１３】以上、Ｎａ／Ｓ電池を例に説明したが、こ
れに類する電池として、ナトリウム−塩化鉄電池（Ｎａ
／ＦｅＣｌ電池），ナトリウム−セレン電池（Ｎａ／Ｓ
ｅ電池）等があり、これらの電池にもこの構造を適用で
きる。Although the Na / S battery has been described above as an example, a battery similar to this is a sodium-iron chloride battery (Na
/ FeCl battery), sodium-selenium battery (Na / S
e battery) and the like, and this structure can be applied to these batteries.
【００１４】[0014]
【発明の効果】本発明によれば、正極容器内に耐食性の
内容器とベーパ浸入防止体を設けた構造により、電池の
製作を容易にできる。また、固体電解質管と電気絶縁材
との接着部と、電気絶縁材と正極容器との接着部にも正
極活物質の浸入を防止して、それらの部分の腐食防止も
でき、電池の寿命や安全性が向上できる。According to the present invention, a battery can be easily manufactured by the structure in which the corrosion-resistant inner container and the vapor penetration preventing member are provided in the positive electrode container. In addition, the positive electrode active material can be prevented from infiltrating into the bonded portion between the solid electrolyte tube and the electrical insulating material and the bonded portion between the electrical insulating material and the positive electrode container, and the corrosion of those parts can be prevented, and the life of the battery can be shortened. The safety can be improved.
【図１】本発明の一実施例を示すＮａ／Ｓ電池の縦断面
図。FIG. 1 is a vertical sectional view of a Na / S battery showing an embodiment of the present invention.
【図２】本発明の他の実施例を示すＮａ／Ｓ電池の縦断
面図。FIG. 2 is a vertical sectional view of a Na / S battery showing another embodiment of the present invention.
【図３】従来のＮａ／Ｓ電池の縦断面図。FIG. 3 is a vertical sectional view of a conventional Na / S battery.
【符号の説明】 １…正極容器、２…負極容器、３…電気絶縁材、４…固
体電解質管、５…負極活物質、６…電極、７…正極活物
質，正極成形体、８…内容器、９…ベーパ付着防止体、
１０…緩衝体、１１…被覆層。[Explanation of Codes] 1 ... Positive electrode container, 2 ... Negative electrode container, 3 ... Electrical insulating material, 4 ... Solid electrolyte tube, 5 ... Negative electrode active material, 6 ... Electrode, 7 ... Positive electrode active material, Positive electrode molded body, 8 ... Contents Vessel, 9 ... Vapor adhesion preventive body,
10 ... Buffer, 11 ... Coating layer.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 川崎 勝男 茨城県日立市大みか町七丁目２番１号 株 式会社日立製作所電力・電機開発本部内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Katsuo Kawasaki 7-2-1, Omika-cho, Hitachi-shi, Ibaraki Hitachi Electric Co., Ltd.
Claims (3)
と、硫黄または多硫化ナトリウムを必須成分とする正極
活物質を、Ｎａイオンが通過可能な固体電解質管で隔壁
兼電解質とするナトリウム・硫黄電池において、正極容
器内に耐食性を有する内容器を設け、正極活物質と正極
容器との界面接触を防止した構造を特徴とするナトリウ
ム・硫黄電池。1. A sodium-sulfur battery in which a negative electrode active material containing sodium as an essential component and a positive electrode active material containing sulfur or sodium polysulfide as an essential component are solid electrolyte tubes through which Na ions can pass and which also function as partition walls and electrolytes. 2. A sodium-sulfur battery characterized in that an inner container having corrosion resistance is provided in the positive electrode container to prevent interfacial contact between the positive electrode active material and the positive electrode container.
ーパ浸入防止体を装着するナトリウム・硫黄電池。2. The sodium-sulfur battery according to claim 1, wherein a vapor infiltration-preventing body is mounted on an upper portion of the positive electrode molded body.
との間に緩衝体を装着するナトリウム・硫黄電池。3. The sodium-sulfur battery according to claim 1, wherein a buffer is mounted between the positive electrode container and the inner container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7096516A JPH08293322A (en) | 1995-04-21 | 1995-04-21 | Sodium-sulfur battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7096516A JPH08293322A (en) | 1995-04-21 | 1995-04-21 | Sodium-sulfur battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08293322A true JPH08293322A (en) | 1996-11-05 |
Family
ID=14167312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7096516A Pending JPH08293322A (en) | 1995-04-21 | 1995-04-21 | Sodium-sulfur battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08293322A (en) |
-
1995
- 1995-04-21 JP JP7096516A patent/JPH08293322A/en active Pending
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