Abstract
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.
Original language | English |
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Pages (from-to) | 1355-1361 |
Number of pages | 7 |
Journal | ACS Applied Materials and Interfaces |
Volume | 5 |
Issue number | 4 |
DOIs | |
Publication status | Published - 2013 Feb 27 |
Keywords
- aqueous electrolyte
- electropolymerization
- polyviologen
- rechargeable device
- redox polymer
ASJC Scopus subject areas
- Materials Science(all)