Journal
JOURNAL OF POWER SOURCES
Volume 195, Issue 18, Pages 6212-6217Publisher
ELSEVIER
DOI: 10.1016/j.jpowsour.2009.10.078
Keywords
Organic radical battery; Polyacrylate; Fast redox; Capacitor
Ask authors/readers for more resources
For organic radical batteries, poly(2,2,6,6-tetramethylpiperidinyloxy-4-yl methacrylate)(PTMA) has been reported as a promising positive electrode material. The PTMA/C composite electrode prepared with polyacrylate binder demonstrated the fast redox performance for the application to aprotic secondary batteries. When the variation in discharge capacities of the PTMA/C composite electrode was tested galvanostatically at 20C rates, the electrode retained 96% of the initial capacity after 1000 cycles. This is attributed to the fact that the redox of FTMA is a simple reaction to form the oxoammonium salt doped with ClO4- anions in the electrolyte. When the PTMA/C composite electrode was discharged at different C rates, the electrode retained 81% of the theoretical capacity even at 50C rates. This remarkably high rate capability originates from the fast electron-transfer kinetic of the 2,2,6,6-tetramethylpiperidine-N-oxyl (so-called TEMPO) radical, partially jelled polyacrylate binder, and the improved conductivity throughout the electrode by thoroughly mixing with carbon. (C) 2009 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available