JPH0251213B2 - - Google Patents
Info
- Publication number
- JPH0251213B2 JPH0251213B2 JP56203040A JP20304081A JPH0251213B2 JP H0251213 B2 JPH0251213 B2 JP H0251213B2 JP 56203040 A JP56203040 A JP 56203040A JP 20304081 A JP20304081 A JP 20304081A JP H0251213 B2 JPH0251213 B2 JP H0251213B2
- Authority
- JP
- Japan
- Prior art keywords
- iodine
- lithium
- positive electrode
- discharge
- battery
- 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
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
- H01M6/14—Cells with non-aqueous electrolyte
- H01M6/18—Cells with non-aqueous electrolyte with solid electrolyte
- H01M6/182—Cells with non-aqueous electrolyte with solid electrolyte with halogenide as solid electrolyte
-
- 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
- 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】
本発明はリチウム−沃素系固体電解質電池に関
する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a lithium-iodine solid electrolyte battery.
リチウム沃素系電池は負極のリチウムと正極の
沃素あるいは沃素電荷移動錯体とを接触させるこ
とによりその界面でリチウムイオン導電性の固体
電解質を生じるため容易に構成される。ここで生
成する固体電解質は沃化リチウムであるがその室
温（20℃）でのイオン導電率は10-7Ω-1cm-1程度
であり、しかも放電進行に伴い固体電解質の層が
生長するため電池の内部抵抗は著しく増大し電圧
及び電流が低下することはさけられない。 A lithium-iodine battery is easily constructed because a lithium ion conductive solid electrolyte is produced at the interface by bringing lithium in the negative electrode into contact with iodine or an iodine charge transfer complex in the positive electrode. The solid electrolyte produced here is lithium iodide, but its ionic conductivity at room temperature (20°C) is about 10 -7 Ω -1 cm -1 , and the solid electrolyte layer grows as the discharge progresses. Therefore, the internal resistance of the battery increases significantly and the voltage and current inevitably decrease.
一方保存中正極の沃素はその一部が常に気化し
ており、これが固体電解質中に拡散して負極リチ
ウムに達すれば自己放電を起すことになる。 On the other hand, during storage, a portion of the iodine in the positive electrode is always vaporized, and if this diffuses into the solid electrolyte and reaches the negative electrode lithium, self-discharge will occur.
従つてリチウム−沃素系電池において、生成す
る固体電解質のイオン導電率を上昇させること及
び沃素の気化拡散を抑えることが重要である。 Therefore, in lithium-iodine batteries, it is important to increase the ionic conductivity of the solid electrolyte produced and to suppress the vaporization and diffusion of iodine.
本発明は正極としての沃素電荷移動錯体中にリ
チウムを含むゼオライトを添加することにより、
放電生成物としての固体電解質のイオン導電性を
改善し、放電による電圧降下が小さく、且自己放
電の少ないリチウム−沃素系電池を提供するもの
である。 In the present invention, by adding zeolite containing lithium to an iodine charge transfer complex as a positive electrode,
The object of the present invention is to provide a lithium-iodine battery that improves the ionic conductivity of a solid electrolyte as a discharge product, has a small voltage drop due to discharge, and has little self-discharge.
以下本発明の実施例を説明する。 Examples of the present invention will be described below.
正極は有機化合物（ドナー）としてピレン
（C16H10）５ｇとアクセプターとして沃素20ｇを
夫々粉砕したのち、両者を乳鉢中で充分に混合し
て電荷移動錯体を調製する。この沃素錯体25ｇに
リチウムを含むゼオライト（Li2O：Al2O3：
2SiO2）の400メツシユ通過粉末10ｇを加えて充
分混合し、これをプレス成型して15mmφのペレツ
トを作成する。 For the positive electrode, 5 g of pyrene (C 16 H 10 ) as an organic compound (donor) and 20 g of iodine as an acceptor are each ground, and then the two are sufficiently mixed in a mortar to prepare a charge transfer complex. Zeolite containing lithium (Li 2 O: Al 2 O 3 :
Add 10 g of 400-mesh powder of 2SiO 2 ), mix thoroughly, and press-mold to make pellets of 15 mm diameter.
第１図はこのペレツトを組込んだ電池を示し、
１は上記正極、２は15mmφのリチウム負極、３，
４は正負の電極罐、５は封口ガスケツトである。 Figure 1 shows a battery incorporating this pellet,
1 is the above positive electrode, 2 is the 15mmφ lithium negative electrode, 3,
4 is a positive and negative electrode can, and 5 is a sealing gasket.
一方比較のため上記の沃素錯体にLiゼオライト
を添加しない正極を用い同様の電池を組立てた。 On the other hand, for comparison, a similar battery was assembled using the above iodine complex with a positive electrode to which no Li zeolite was added.
第２図は27KΩ定抵抗による放電曲線、第３図
は100℃60日間保存後の放電電圧−電流密度曲線
を示し、実線は本発明電池、電線は比較電池の場
合である。 FIG. 2 shows a discharge curve using a constant resistance of 27KΩ, and FIG. 3 shows a discharge voltage-current density curve after storage at 100° C. for 60 days, where the solid line is for the battery of the present invention and the electric wire is for the comparative battery.
これら特性図から本発明電子は比較電池に比し
放電容量及び保存性能の改善が見られる。その理
由は詳かではないが、正極の沃素錯体にLiゼオラ
イトを添加したため、正極・負極界面で生成する
沃化リチウムのイオン導電率が向上したこと、さ
らにゼオライトの吸着作用により保存中における
正極沃素の負極側への拡散が抑制されて自己放電
が小さくなつたことなどが推察される。 From these characteristic diagrams, it can be seen that the electron of the present invention has improved discharge capacity and storage performance compared to the comparative battery. The reason for this is not clear, but the addition of Li zeolite to the iodine complex of the positive electrode improves the ionic conductivity of lithium iodide generated at the interface between the positive and negative electrodes, and the adsorption effect of zeolite allows the iodine of the positive electrode to be absorbed during storage. It is inferred that the self-discharge was reduced by suppressing the diffusion of ion to the negative electrode side.
尚正極の有機ドナー成分として実施例に示した
ピレンの他にペリレン、アントラセン、アスレン
などの多環式芳香族化合物やポリエチレン、ポリ
スチレンなどの有機ポリマーなどを用い、これを
沃素（アクセプター）で付活して電荷移動錯体を
調製することもできる。 In addition to pyrene shown in the examples, polycyclic aromatic compounds such as perylene, anthracene, and asrene, and organic polymers such as polyethylene and polystyrene are used as organic donor components of the positive electrode, and these are activated with iodine (acceptor). Charge transfer complexes can also be prepared by
上述の如く本発明によれば正極には、有機化合
物を沃素で付活してなる電荷移動錯体にリチウム
ゼオライトを添加しているので、放電反応により
界面で生成するLiI電解質のイオン導電性を改善
すると共にゼオライトの吸着力により自己放電を
抑制し得るなど、リチウム−沃素系固体電解質電
池の性能向上に資するものである。 As described above, according to the present invention, lithium zeolite is added to the charge transfer complex formed by activating an organic compound with iodine in the positive electrode, which improves the ionic conductivity of the LiI electrolyte generated at the interface by the discharge reaction. At the same time, self-discharge can be suppressed due to the adsorption power of zeolite, which contributes to improving the performance of lithium-iodine solid electrolyte batteries.
第１図は本発明固体電解質電池の一例を示す断
面図、第２図は同上電池の放電特性図、第３図は
保存特性図である。
１……正極、２……負極、３，４……正・負電
極罐、５……封口ガスケツト。
FIG. 1 is a sectional view showing an example of the solid electrolyte battery of the present invention, FIG. 2 is a discharge characteristic diagram of the same battery, and FIG. 3 is a storage characteristic diagram. 1... Positive electrode, 2... Negative electrode, 3, 4... Positive/negative electrode can, 5... Sealing gasket.
Claims (1)
て沃素と有機化合物よりなる電荷移動錯体を夫々
用いたものにおいて、前記正極活物質にリチウム
ゼオライトを添加したことを特徴とする固体電解
質電池。1. A solid electrolyte battery using lithium as a negative electrode active material and a charge transfer complex made of iodine and an organic compound as a positive electrode active material, characterized in that lithium zeolite is added to the positive electrode active material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56203040A JPS58103776A (en) | 1981-12-15 | 1981-12-15 | Solid electrolyte battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56203040A JPS58103776A (en) | 1981-12-15 | 1981-12-15 | Solid electrolyte battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58103776A JPS58103776A (en) | 1983-06-20 |
| JPH0251213B2 true JPH0251213B2 (en) | 1990-11-06 |
Family
ID=16467342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56203040A Granted JPS58103776A (en) | 1981-12-15 | 1981-12-15 | Solid electrolyte battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58103776A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5728489A (en) * | 1996-12-12 | 1998-03-17 | Valence Technology, Inc. | Polymer electrolytes containing lithiated zeolite |
-
1981
- 1981-12-15 JP JP56203040A patent/JPS58103776A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58103776A (en) | 1983-06-20 |
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