Journal
NANO RESEARCH
Volume 1, Issue 3, Pages 242-248Publisher
TSINGHUA UNIV PRESS
DOI: 10.1007/s12274-008-8028-1
Keywords
Nanospheres; LiFePO4/NiP; spraying; electrical conductivity; rechargeable lithium-ion batteries
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Funding
- National Key Basic Research Program [2005CB623607]
- National Natrual Science Foundation of China [20703026]
- Tianjin Basic & High-Tech Programs [07ZCGHHZ00700, 08JCZDJC21300]
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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 10(3)-10(4) 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.
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