Microwave-assisted preparation of Li{sub 3}V{sub 2}(PO{sub 4}){sub 3}/C composite with high-rate capacity

Journal Article · Fri Jun 15 00:00:00 EDT 2012 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2012.02.040· OSTI ID:22215131

Yan, Ji ^[1]; Mao, Wen-feng ^[1]; Xie, Hui ^[2]; Tang, Zhi-yuan; Yuan, Wei; Chen, Xue-cheng; Xu, Qiang ^[1]; Ma, Li ^[3]

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1. Department of Applied Chemistry, School of Chemical and Engineering, Tianjin University, Tianjin 300072 (China)
2. Texas Materials Institute, ETC 9.184, University of Texas at Austin, Austin, TX 78712 (United States)
3. McNair Technology Co., Ltd., Dongguan, Guangdong 523700 (China)

Highlights: ► High-rate Li{sub 3}V{sub 2}(PO{sub 4}){sub 3}/C is firstly reported via a microwave-assisted method. ► The reduced particle size is responsible for the improved high-rate performance. ► A discharge capacity of 100 mAh g{sup −1} is obtained at 20 C charge–discharge rate. -- Abstract: A fast sol–gel assisted microwave heating approach has been developed for the synthesis of high-rate Li{sub 3}V{sub 2}(PO{sub 4}){sub 3}/C cathode material. This approach can synthesize Li{sub 3}V{sub 2}(PO{sub 4}){sub 3}/C particles with high purity and good crystallinity in 12 min at a low microwave power of 320 W. In the voltage range of 3.0–4.3 V, the obtained Li{sub 3}V{sub 2}(PO{sub 4}){sub 3}/C delivers a reversible discharge capacity of 100 mAh g{sup −1} after 100 cycles at 20 °C, exhibiting excellent rate capability and cycling performance. The rate-recovery performance also suggests that the Li{sub 3}V{sub 2}(PO{sub 4}){sub 3}/C material possesses excellent structure stability after high-rate cycles, presenting excellent application value in high-power lithium ion batteries.

• OSTI ID: 22215131
• Journal Information: Materials Research Bulletin, Vol. 47, Issue 6; Other Information: Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ELECTRIC BATTERIES
LITHIUM IONS
MICROWAVE HEATING
PARTICLE SIZE
PHOSPHATES
SYNTHESIS
X-RAY DIFFRACTION