Abstract: To improve the physical properties and electrochemical performance of gel electrolyte，gel electrolytes with different contents of polyving alcohol（PVA）were prepared. Test results of viscosity，strength and gelling time tests showed that viscosity was increased with increasing PVA content and increased significantly when the content was over 0.0050%. Gel strength was enhanced and gelling time was prolonged when adding PVA of 0.0025% and 0.0050%，and gel performance was improved. However，physical properties of the electrolyte could not be improved，when the content of PVA was further increased. Cyclic voltammetry and AC impedance spectroscopy test results showed that adding PVA of 0.0050% could improve the reaction current and power of electrode，increase the utilization of active material and oxygen evolution potential，suppress self-discharge and lower impedance of electrolyte，electrochemical reaction charge transfer resistance and capacitance.

Key words: colloid, electrolytes, gels, surfactants, polyving alcohol（PVA）

摘要： 为改善胶体电解质的物理性质，提高电化学性能，制备了不同聚乙烯醇（PVA）含量的胶体电解质，黏度、强度和胶凝时间测试结果表明，黏度随PVA含量的提高而增加，在含量0.0050%之后增加显著；加入0.0025%和0.0050% PVA，凝胶强度增大，胶凝时间延长，凝胶性能得到改善，但继续提高PVA含量对改善电解质的物理性质不利。循环伏安和交流阻抗测试结果表明，加入0.0050% PVA可提高电极的反应电流和电量，有利于提高活性物质的利用率、析氧过电位，抑制自放电，降低电解质的阻抗、电化学反应的电荷转移电阻和电容。

关键词: 胶体, 电解质, 凝胶, 表面活性剂, 聚乙烯醇