Preliminary communication

https://doi.org/10.15255/KUI.2015.017

Interface Synthesis of FePO₄ with Different Morphologies and Effect of Morphology on the Electrochemical Performance of LiFePO₄/C

Y.-H. Luo ; School of Chemical Engineering; Nanjing University of Science and Technology Jiangsu, 210 094 Nanjing, PR China; National Quality Supervision and Inspection Center for Industrial Explosive Materials Jiangsu, 210 094 Nanjing, PR China
N. He ; Sinosteel Maanshan Institute of Mining Research Co., Ltd., Maanshan, 243 000 Anhui, PR China
Y.-C. Wang ; Sinosteel Anhui Tianyuan Technology Co., Ltd., 243 000 Anhui Maanshan, PR China
W.-G. Cao ; School of Chemical Engineering; Nanjing University of Science and Technology Jiangsu, 210 094 Nanjing, PR China
P. Feng ; School of Chemical Engineering; Nanjing University of Science and Technology Jiangsu, 210 094 Nanjing, PR China

Abstract

In our work, interface synthesis method was put forward to prepare FePO4 with different morphologies, and the effect of morphology on the preparation and electrochemical performance of LiFePO₄/C was investigated. The results showed that the morphology of FePO4 was amorphous and monoclinic at the treatment temperatures of 30 °C and 80 °C, respectively. LiFePO₄/C prepared from two crystal precursors were both hemispherical hollow with an olivine crystal structure. LiFePO₄/C produced from the monoclinic structured precursor exhibited smaller- sized morphology and better electrochemical performance, and its discharge capacities were 155.9 mA h g−1 and 141.8 mA h g−1 at the rates of 0.1 C and 1 C, respectively. After 150 cycles, its capacity retention was about 97.8 % and 95.1 % at 0.1 C and 1 C, respectively

Keywords

FePO₄, LiFePO₄/C; lithium-ion battery; composite materials; energy storage and conversion

Hrčak ID:

141711

URI

https://hrcak.srce.hr/141711

Publication date:

15.7.2015.

Article data in other languages: croatian

Visits: 2.421 *