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

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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
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Document Type: Research Article

Affiliations: 1: 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 2: Sinosteel Maanshan Institute of Mining Research Co., Ltd., Maanshan, 243 000 Anhui, PR China 3: Sinosteel Anhui Tianyuan Technology Co., Ltd., 243 000 Anhui Maanshan, PR China 4: School of Chemical Engineering; Nanjing University of Science and Technology Jiangsu, 210 094 Nanjing, PR China

Publication date: January 1, 2015

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