Alkaline poly(vinyl alcohol)/poly(acrylic acid) polymer electrolyte membrane for Ni-MH battery application

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• 作者：Bobo Li ; Xia Lu ; Jianguang Yuan ; Yunfeng Zhu ; Liquan Li
• 关键词：Poly(vinyl alcohol) ; Poly(acrylic acid) ; Alkaline polymer electrolyte membrane ; Ni ; MH battery ; Capacity retention rate
• 刊名：Ionics
• 出版年：2015
• 出版时间：January 2015
• 年：2015
• 卷：21
• 期：1
• 页码：141-148
• 全文大小：761 KB
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• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Electrochemistry
  Materials Science
  Physical Chemistry
  Condensed Matter
  Renewable Energy Sources
  Electrical Power Generation and Transmission
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1862-0760

文摘

Alkaline polymer electrolyte membrane with high ionic conductivity of 0.019?S?cm? at room temperature was prepared from poly(vinyl alcohol) and acrylic acid through solution polymerization. The structure and morphology of the membrane were characterized by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The electrochemical properties were measured by the alternating current impedance (AC impedance) and the cyclic voltammetry (CV) techniques. Simulated Ni-MH batteries using Mg-based hydrogen storage alloy produced by the hydriding combustion synthesis and mechanical milling (HCS + MM) technique as negative electrode were assembled by using the experimental PVA-PAA-KOH polymer membrane (polymer Ni-MH batteries) and 6?mol?L? KOH aqueous (traditional Ni-MH batteries) as electrolytes, respectively. After 10?cycles, the capacity retention rate of the traditional Ni-MH battery was only 3.9?%, but the corresponding value of polymer Ni-MH battery was 14.7?%.