Polymer Ni-MH battery based on PEO-PVA-KOH polymer electrolyte

被引：107
|
作者：
Yang, CC [1 ]
机构：
[1] Ming Chi Inst Technol, Dept Chem Engn, Taipei, Taiwan
来源：
JOURNAL OF POWER SOURCES | 2002年 / 109卷 / 01期
关键词：
polymer electrolyte; poly(ethylene oxide); poly(vinyl alcohol); ionic conductivity; nickel-metal-hydride battery;
D O I：
10.1016/S0378-7753(02)00038-1
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
An alkaline polymer electrolyte film has been prepared by a solvent-casting method. Poly(vinyl alcohol), PVA is added to improve the ionic conductivity of the electrolyte. The ionic conductivity increases from 10(-7) to 10(-2) S cm(-1) at room temperature when the weight percent ratio of poly(ethylene oxide), PEO to PVA is increased from 10:0 to 5:5. The activation energy of the ionic conductivity for the PEO-PVA-KOH polymer electrolyte is 3-8 kJ mol(-1). The properties of the electrolyte film are characterized by a wide variety of techniques and it is found that the film exhibits good mechanical stability and high ionic conductivity at room temperature. The application of such electrolyte films to nickel-metal-hydride (Ni-MH) batteries is examined and the electrochemical characteristics of a polymer Ni-MH battery are obtained. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：22 / 31
页数：10
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