A RECHARGEABLE CELL BASED ON A CONDUCTIVE POLYMER METAL ALLOY COMPOSITE ELECTRODE

被引:19
作者
JOW, TR
SHACKLETTE, LW
机构
[1] Allied-Signal Inc, United States
关键词
Composite Materials--Applications - Electrodes; Electrochemical--Materials - Lead Sodium Alloys--Applications - Polymers--Conductive;
D O I
10.1149/1.2096586
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
A composite electrode composed of a conductive polymer and an alkali-metal alloy has been investigated as the negative electrode for a nonaqueous rechargeable cell. A sodium-alloy based composite electrode composed of Na3.75Pb, poly(p-phenylene), and binder achieved a capacity of 234 mAh/cm3. This electrode also exhibited excellent cycle life and rate capability without dendrite formation. The composite electrode exhibited kinetic behavior similar to that of pure sodium metal. A balanced cell was constructed by combining the above sodium-ion-inserting composite negative electrode with a sodium-ion-inserting positive electrode, NaxCoO2, of approximately equal capacity. The cell exhibited excellent cycle life (>250 cycles). The semiempirical energy density of the NaxCoO2/composite electrode system is comparable to alternative lithium metal based cell such as TiS2/ Li assuming that excess Li is needed in the latter case.
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页码:1 / 6
页数:6
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