Organic Radical Battery with Piperidinoxyl Polymer.

Accession number;02A0706246
Title;Organic Radical Battery with Piperidinoxyl Polymer.
Author;SATO MASAHARU(NEC Corp., Function Material Lab., JPN)   NAKAHARA KENTARO(NEC Corp., Function Material Lab., JPN)   IRIYAMA JIRO(NEC Corp., Function Material Lab., JPN)   IWASA SHIGEYUKI(NEC Corp., Function Material Lab., JPN)   MORIOKA YUKIKO(NEC Corp., Function Material Lab., JPN)   SUGURO MASAHIRO(NEC Corp., Function Material Lab., JPN)   
Journal Title;IEIC Technical Report (Institute of Electronics, Information and Communication Engineers)
Journal Code:S0532B
ISSN:0913-5685
VOL.102;NO.182(US2002 27-36);PAGE.1-6(2002)
Figure&Table;&Reference;FIG.11, REF.5
Pub. Country;Japan
Language;Japanese
Abstract;We have proposed a new class of rechargeable battery based on the electrochemical reaction of organic radical compounds. The redox reaction of the radicals proceeds sufficiently fast for the battery operations. The prototype cell with poly(tetramethylpiperidinoxyl methacrylate) demonstrates the constant voltage of 3.5V during the charge-discharge process and an excellent cycle ability for over 1000 cycles with the capacity at around 75Ah/kg. The organic radical battery has also confirmed the good energy efficiency ca. 100% under the extremely large discharge rate of 3kW/kg. Due to the possibility in producing the organic compounds with radicals at high concentrations, the nobel battery should be promising the high energy density cell for a wide variety of applications. (author abst.)