Li-ion Rechargeable Batteries Based on LiFePO4: A comparative Study on the Nanostructured Composite Positive Electrode With Two Different Carbon Coating

Autor:	Naba K. Karan, Maharaj S. Tomar, Reji Thomas, Ram S. Katiyar, Arun Kumar
Rok vydání:	2009
Předmět:	Materials science Chemical engineering Composite number Electrode Carbon coating Ion
Zdroj:	ECS Transactions. 16:143-149
ISSN:	1938-6737 1938-5862
Popis:	Nanostructured Carbon-LiFePO4 composite cathode materials were prepared with conventional solid-state route. The orthorhombic olivine structure without any impurity was obtained at 650{degree sign}C. The average LiFePO4 particle sizes were ~80 nm and were coated with residual carbon. The cyclic voltammograms showed only a pair of peaks corresponding to the anodic and cathodic reactions. The irreversible capacity loss in the first cycle was 5 mAh/gm, and the Coulombic efficiency was 97%. The first discharge capacity was 157 mAh/g, equivalent to 93% of the theoretical capacity (Fe2+/Fe3+ redox efficiency). Capacity retention after 80 cycles was ~98% and hence insignificant capacity fading.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a771cc1e3974f2a96e6f3aa1f29b8bae https://doi.org/10.1149/1.3115316 Zobrazit plný text záznamu