Composite alkaline polymer electrolytes and its application to nickel–metal hydride batteries
作者： Anbao Yuan , Jun Zhao
DOI: 10.1016/J.ELECTACTA.2005.07.027
关键词:
摘要: Abstract In order to enhance the ionic conductivity of polyethylene oxide (PEO)-KOH based alkaline polymer electrolytes, three types nano-powders, i.e., TiO2, β-Al2O3 and SiO2 were added PEO-KOH complex, respectively, corresponding composite electrolytes prepared. The experimental results showed that prepared exhibited higher conductivities at room temperature, typically 10−3 S cm−1 as measured by ac impedance method, good electrochemical stability. stability window ca. 1.6 V was determined cyclic voltammetry with stainless steel blocking electrodes. influence film composition such KOH, H2O nano-additives on ion investigated explained. temperature dependence also determined. addition, polyvinyl alcohol (PVA)-sodium carboxymethyl cellulose (CMC)-KOH obtained using solvent casting method. properties characterized impedance, differential thermal analysis methods. PVA-CMC-KOH-H2O can reach 10−2 S cm−1. effect CMC addition demonstrated electrolyte could be used in Ni/MH battery.
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