Department of Applied Chemistry, Waseda University, Tokyo 169-8555, Japan.
ACS Appl Mater Interfaces. 2013 Feb;5(4):1355-61. doi: 10.1021/am302647w. Epub 2013 Feb 7.
A highly cross-linked polyviologen hydrogel, poly(tripyridiniomesitylene) (PTPM), has been designed as an anode-active material. It displays a reversible two-electron redox capability at -0.4 and -0.8 V vs Ag/AgCl in an aqueous electrolyte. The PTPM layer coated on a current collector by electropolymerization via a 4-cyanopyridinium electro-coupling reaction demonstrates a rapid charging-discharging reaction with a redox capacity comparable to that obtainable using the formula weight-based theoretical density, because of the combination of the redox-active viologen moieties built into the hydrogel. A test cell that has been fabricated using the developed PTPM anode, a poly(2,2,6,6-tetramethylpiperidinyloxy-4-yl acrylamide) (PTAm)-based cathode, and an aqueous electrolyte exhibits a discharging voltage of 1.1 and 1.5 V, and has proven its ability to be recharged more than 2000 times.
一种高度交联的聚联吡啶水凝胶，聚（三吡啶间苯二甲醛）（PTPM），已被设计为阳极活性材料。它在水溶液电解质中相对于 Ag/AgCl 在 -0.4 和 -0.8 V 下显示出可逆的两电子氧化还原能力。通过 4-氰基吡啶鎓电偶联反应通过电聚合在集流器上涂覆的 PTPM 层具有快速的充放电反应，其氧化还原容量与使用基于公式重量的理论密度可获得的氧化还原容量相当，因为氧化还原活性的联吡啶部分结合到水凝胶中。使用所开发的 PTPM 阳极、基于聚（2,2,6,6-四甲基哌啶氧基-4-基丙烯酰胺）（PTAm）的阴极和水性电解质制造的测试电池显示出 1.1 和 1.5 V 的放电电压，并且已经证明其能够充电 2000 多次以上。
