Article Title

Porous LiFePO₄/NiP Composite nanospheres as the cathode materials in rechargeable lithium-ion batteries

Authors

Chunsheng Li, Institute of New Energy Material Chemistry, Key Laboratory of Energy Material Chemistry (Tianjin) and Engineering Research Center of High-Energy Storage and Conversion (Ministry of Education), Nankai University, Tianjin 300071, China
Shaoyan Zhang, Institute of New Energy Material Chemistry, Key Laboratory of Energy Material Chemistry (Tianjin) and Engineering Research Center of High-Energy Storage and Conversion (Ministry of Education), Nankai University, Tianjin 300071, China
Fangyi Cheng, Institute of New Energy Material Chemistry, Key Laboratory of Energy Material Chemistry (Tianjin) and Engineering Research Center of High-Energy Storage and Conversion (Ministry of Education), Nankai University, Tianjin 300071, China
Weiqiang Ji, Institute of New Energy Material Chemistry, Key Laboratory of Energy Material Chemistry (Tianjin) and Engineering Research Center of High-Energy Storage and Conversion (Ministry of Education), Nankai University, Tianjin 300071, China
Jun Chen, Institute of New Energy Material Chemistry, Key Laboratory of Energy Material Chemistry (Tianjin) and Engineering Research Center of High-Energy Storage and Conversion (Ministry of Education), Nankai University, Tianjin 300071, China

Keywords

Nanospheres, LiFePO4/NiP, spraying, electrical conductivity, rechargeable lithium-ion batteries

Abstract

We report the synthesis of porous LiFePO4/NiP composite nanospheres and their application in rechargeable lithium-ion batteries. A simple one-step spraying technique was developed to prepare LiFePO4/NiP composite nanospheres with an electrical conductivity 103 104 times that of bulk particles of LiFePO4. Electrochemical measurements show that LiFePO4 nanospheres with a uniform loading of 0.86 wt% 1.50 wt% NiP exhibit high discharge capacity, good cycling reversibility, and low apparent activation energies. The superior electrode performance of the as-prepared composite nanospheres results from the greatly enhanced electrical conductivity and porous structure of the materials.

Graphical Abstract

DOI

https://doi.org/10.1007/s12274-008-8028-1

Publisher

Tsinghua University Press

Recommended Citation

Chunsheng Li,Shaoyan Zhang,Fangyi Cheng,Weiqiang Ji,Jun Chen, Porous LiFePO4/NiP Composite nanospheres as the cathode materials in rechargeable lithium-ion batteries. NanoRes.2008, 1: 242-248