Facile synthesis of micro-spherical LiMn0.7Fe0.3PO4/C cathodes with advanced cycle life and rate performance for lithium-ion battery. Issue 6 (15th April 2017)

• Record Type: Journal Article
• Authors: Yang, Li; Wang, Yan; Wu, Jinhua; Xiang, Mingwu; Li, Jianlong; Wang, Boya; Zhang, Yun; Wu, Hao; Liu, Heng
• Is Part Of: Ceramics international. Volume 43:Issue 6(2017)
• Page Start: 4821
• Page End: 4830
• Publication Date: 2017-04-15
• Subjects: Co-precipitation -- Spray drying -- Porous micro-spherical structure -- LiMn0.7Fe0.3PO4/C -- Lithium-ion batteries; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2016.12.025
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: A series of micro-spherical LiMn0.7 Fe0.3 PO4 /C (LMFP) cathode materials are synthesized via co-precipitation method combining spray drying and solid-state reaction. All as-prepared materials are well-characterized to determine their crystal structure, morphology and electrochemical performance. All as-obtained LMFP materials correspond to orthorhombic olivine structure with Pbnm space group and show uniform porous spherical structure with an average particle size of 3 µm and a carbon coating layer of about 3 nm. In particular, the resulting LMFP material prepared at 600 °C exhibits a high discharge capacity of 160 mAh g −1 at 0.1 C. Even at a high rate of 10 C, it can still deliver 133 mAh g −1 and maintain capacity retention of 84.9% after 200 cycles. The excellent electrochemical performance is ascribed to the synergetic effect of porous micro-spherical structure and uniform carbon coating layer.