Zinc electrode with anion conducting polyvinyl alcohol/poly(diallyldimethylammonium chloride) film coated ZnO for secondary zinc air batteries
Zinc electrode with anion conducting polyvinyl alcohol/poly(diallyldimethylammonium chloride) film coated ZnO for secondary zinc air batteries
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DOI：
10.1016/j.electacta.2015.09.105
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发表时间：
2015-11-10
影响因子：
6.6
通讯作者：
Zhao, Jing
中科院分区：
文献类型：
--
作者：
Gan, Wengang;Zhou, Debi;Zhao, Jing
采用化学交联法制备了聚乙烯醇（PVA）/聚二甲基二烯丙基氯化铵（PDDA）复合膜包覆氧化锌（ZnO）的锌电极。PVA/PDDA聚合物膜具有互穿网络结构，其中PVA作为聚合物基体，PDDA作为阴离子电荷载体。傅里叶变换红外光谱（FT-IR）、扫描电镜（SEM）和透射电镜（TEM）研究表明，ZnO纳米颗粒周围形成了一层具有良好连接的三维网络结构的聚合物薄膜。对ZnO/PVA/PDDA复合电极进行了线性扫描伏安法、循环伏安法和充放电循环测试，结果表明，复合电极的电化学活性和循环稳定性明显上级未加聚合物膜的裸ZnO电极。ZnO/PVA/PDDA电极在循环过程中表现出明显较低的溶解度。(C)2015爱思唯尔有限公司版权所有。
Zinc electrode with polyvinyl alcohol(PVA)/poly(diallyldimethylammonium chloride) (PDDA) film coated ZnO was prepared by a chemical cross-linking method. The PVA/PDDA polymer film has an interpenetrating network structure where PVA works as polymer matrix and PDDA as anion charge carriers. Fourier transform infrared spectra (FT-IR), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) studies reveal that a polymer film with well-connected three dimensional network structure is formed around ZnO nanoparticles. Linear sweep voltammetry, cyclic voltammetry (CV) and charge/discharge cycling tests were carried out on the ZnO/PVA/PDDA composite electrode, which exhibits higher electrochemical activity and dramatically superior cycle stability than the bare ZnO electrode without polymer films. The ZnO/PVA/PDDA electrode showed remarkably lower solubility during cycling. (C) 2015 Elsevier Ltd. All rights reserved.