含不同比例水有机聚合液中制备的聚吡咯电极的电化学性能研究  

Electrochemical performance of polypyrrole electrode electropolymerized in organic solution containing different proportion of water

作　　者：王元[1] 穆道斌[1] 金莹[2] 吴锋[1] 陈实[1] 

机构地区：[1]北京理工大学化工与环境学院环境科学工程北京重点实验室,北京100081 [2]北京科技大学国家材料服役安全科学中心(筹),北京100083

出　　处：《功能材料》2010年第8期1460-1464,共5页Journal of Functional Materials

基　　金：国家重点基础研究发展计划(973计划)资助项目(2009CB220100);北京理工大学基础研究基金资助项目(20060542011)

摘　　要：在0.1mol/LPy+0.1mol/LLiClO4的碳酸丙烯酯溶液(PC)中添加不同比例的水(0、1%、2%、3%、4%(体积分数)),通过电化学恒电流法在Pt微电极上制备了聚吡咯(PPy)电极。采用循环伏安、交流阻抗、恒电流充放电及扫描电镜(SEM)等方法对不同含水比例聚合液中得到的PPy进行电化学测试及形貌分析。结果表明,聚合溶液中水的添加能够降低聚合电势,改善聚吡咯电极的电化学性能,含水比例1%条件下得到的PPy电极性能相对最好,表现出良好的反应可逆性,循环稳定性,较高的充放电效率。Polypyrrole electrodes were prepared in 0.1mol/L Py-0.1mol/L LiClO-4 propylene carbonate （PC） solutions containing different proportion of water （0,1%,2%,3%,4%,by volume） through galvanostatic electropolymerization.The electrode properties of polypyrroles synthesized in the solutions containing different proportion of water were investigated with cyclic voltammetry as well as electrochemical impedance spectra （EIS）.The morphologies of PPy synthesized in the solutions without/with water （1%） were observed by scanning electron microscope（SEM）.Electrochemical performance of PPy electrodes was studied with galvanostatic charge-discharge method.It is shown that the addition of water into polymerization solutions lowers the polymerization potential of PPy,in particular,leads to an improvement of PPy electrode performance.It is found that the PPy electrode electropolymerized under the condition of containing 1% of water displays better electrochemical performance on reversibility,cycleability and charge-discharge efficiency among various PPy electrodes examined in this work,relatively.

关 键 词：PPY 恒电流聚合 循环伏安 

分 类 号：O631.2[理学—高分子化学]