Influence of pH on Electrochemical Performances of Iron Phosphate (FePO4•xH2O) Particles and LiFePO4/C Composites

Autor: Hong Quan Liu, Yun Bo Chen, Yan Min Wang, Qing Gang Zhang, Yi Jie Gu, Peng Liu, Shu Qi Li, Fei Xiang Hao
Rok vydání: 2013
Předmět:
Zdroj: Advanced Materials Research. 643:100-103
ISSN: 1662-8985
DOI: 10.4028/www.scientific.net/amr.643.100
Popis: The effect of pH concentrations on the size and morphology of FePO4•xH2O particles synthesized in a hydrothermal reactor was investigated in this work. FePO4•xH2O was prepared through co-precipitation by employing Fe(NO3)3•9H2Oand H3PO4 as raw materials. The LiFePO4 obtained through lithiation of FePO4•xH2O by using glucose as a reducing agent at 700°C. The electrochemical performance of LiFePO4 powder synthesized at 700°C were evaluated using coin cells by galvanostatic charge/discharge .The results indicated that the synthesized LiFePO4/C composites (pH=2) showed a superior electrochemical capacity of 146 mAh/g and possessed a capacity favorable cycling maintenance at the 0.1C rate and high electronic conductivity.
Databáze: OpenAIRE