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Integrated Ferroelectrics
An International Journal
Volume 164, 2015 - Issue 1: Proceedings of The Thirteenth China International Nanoscience and Technology Symposium (CINSTS14) Part V of V
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Original Articles

Impact of pH on Morphology and Electrochemical Performance of LiFePO4 as Cathode for Lithium-ion Batteries

Xinru ZhaoKey Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province, Changchun University of Science and Technology, Changchun, 130022, China
,
Jinxian WangState Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, CAS, Changchun, 130022, ChinaCorrespondence[email protected] [email protected]
,
Xiangting DongCorrespondence[email protected] [email protected]
,
Xinlu WangKey Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province, Changchun University of Science and Technology, Changchun, 130022, China
,
Guixia LiuKey Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province, Changchun University of Science and Technology, Changchun, 130022, China
,
Wensheng YuKey Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province, Changchun University of Science and Technology, Changchun, 130022, China
&
Limin WangState Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, CAS, Changchun, 130022, China
 show all
Pages 98-102 | Received 01 Aug 2014, Accepted 31 Dec 2014, Published online: 17 Aug 2015
 
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Abstract

Lithium-ion battery cathode material LiFePO4 particles were synthesized by sol-gel method. The impact of pH value on morphology and electrochemical performance of LiFePO4 particles have been investigated. Results show that as pH value increased, the particle sizes of LiFePO4 are reduced, and its particle sizes distribution are narrowed. The LiFePO4 particles synthesized with a high pH value contains hierarchically organized pores, yielding a high discharge capacity of 129.02 mAh/g at 0.2 C and a stable capacity retention of 91.71% until 20 electrochemical cycles.

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