Journal
MACROMOLECULAR CHEMISTRY AND PHYSICS
Volume 210, Issue 22, Pages 1989-1995Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/macp.200900257
Keywords
electrode-active materials; hydrophilic polymers; poly(vinyl ethers); radical polymers; redox polymers; secondary batteries
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Funding
- MEXT, Japan [19105003, 19655043]
- Research Project Radical Polymers at the Advanced Research Institute
- Japan Society for the Promotion of Science
- Grants-in-Aid for Scientific Research [19655043, 19105003] Funding Source: KAKEN
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A hydrophilic poly(vinyl ether)-backbone polymer bearing a pendant TEMPO radical, poly(2,2,6,6-tetramethylpiperidinyloxy-4-yl vinyl ether) (PTVE), was designed as a cathode-active material, which displays a reversible one-electron redox capability, even in an aqueous electrolyte. The PTVE layer coated on a current collector demonstrated a rapid charging-discharging rate based on the combination of the redox-active nitroxide radicals built into the hydrophilic polymer and the aqueous electrolyte that possessed a high electrical conductivity. A test cell fabricated with a PTVE cathode, a zinc anode, and an aqueous electrolyte gave an output voltage of 1.7 V and showed the ability to be recharged more than 500 times rechargeability.
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