Facile synthesis of nanostructured LiMnPO4 as a high-performance cathode material with long cycle life and superior rate capability
作者： Longhuan Liao , Jian Xie , Shichao Zhang , Gaoshao Cao , Xinbing Zhao
DOI: 10.1039/C5RA21264B
关键词:
摘要: Lithium manganese phosphate (LiMnPO4) has been considered as an alternative to lithium iron (LiFePO4) for next-generation Li-ion battery cathodes because of its higher working voltage. However, facile preparation methods high-performance LiMnPO4 are still lacking. In this work, we propose a route prepare nano-LiMnPO4 (30–50 nm) by using citric acid (CA) surfactant. The addition small amount CA in the precursor leads obvious size reduction LiMnPO4. After carbon-coating, exhibits excellent rate capability and long cycle life at high rates uniform/thin carbon coating. At up 20C (3.4 A g−1), LiMnPO4/C can deliver discharge capacity 96.6 mA h g−1. also with ∼70% retained after 500 cycles 10C. electrochemical performance makes it attractive cathode high-power high-energy batteries.
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