Physical and Electrochemical Properties of Li_2-xFeSiO₄/C Cathode Material for Li-Ion Batteries

Abstract:

Li_2-xFeSiO₄/C (x=0.01, 0.05, 0.1) were successfully synthesized by a traditional solid-state method and systematically investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM) and the charge-discharge test, respectively. The results demonstrated that Li_2-xFeSiO₄ exhibited the best electrochemical performance among the three as-synthsied samples. it delivered a specific discharge capacity of 142 mAh g^-1, 112 mAh g^-1 at 0.2 C and 2 C, respectively. After 100 cycles at the rate of 1 C, the discharge capacity remained 95.1% of its initial value.

• Periodical: Applied Mechanics and Materials (Volumes 644-650)
• Pages: 4710-4713
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.644-650.4710
• Online since: September 2014
• Authors: Xiao Bing Huang*, Jie Ren, Hao Wang, Pei Tian Peng, Shi Qiang Feng, Hong Hui Chen, Shi Biao Zhou, Yuan Dao Chen
• Keywords: Li_2-xFeSiO₄/C, Lithium Deficiency, Lithium-Ion Battery, Solid-State Reaction

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