Citation: ZHANG Ying-Jie, ZHU Zi-Yi, DONG Peng, QIU Zhen-Ping, LIANG Hui-Xin, LI Xue. New Research Progress of the Electrochemical Reaction Mechanism, Preparation and Modification for LiFePO₄[J]. Acta Physico-Chimica Sinica, ;2017, 33(6): 1085-1107. doi: 10.3866/PKU.WHXB201704114 shu

New Research Progress of the Electrochemical Reaction Mechanism, Preparation and Modification for LiFePO₄

National and Local Joint Engineering Laboratory for Lithium-ion Batteries and Materials Preparation Technology, Key Laboratory of Advanced Battery Materials of Yunnan Province, Kunming University of Science and Technology, Kunming 650000, P. R. China

Received Date: 11 December 2016
Revised Date: 13 March 2017

Fund Project: The project was supposed by the National Natural Science Foundation of China (51604132).

Lithium-ion batteries have been extensively studied due to their excellent electrochemical performance as an effective energy storage device for sustainable energy sources. The key to the development and application of this technology is the improvement of electrode materials. LiFePO₄ has captured the attention of researchers both home and abroad as a potential cathode material for lithium-ion batteries because of its long cycle life, energy density, stable charge/discharge performance, good thermal stability, high safety, light weight and low toxicity. However, there are still some technical bottlenecks in the application of LiFePO₄, such as relatively low conductivity, low diffusion coefficient of lithium ions, and low tap density. Moreover, the cycle performance, low-temperature characteristics, and rate performance are not ideal, restricting its application and development. In recent years, researchers have sought to solve these problems by improving the preparation process and attempting related modifications. In this paper, we have provided a systemic review of the structure, electrochemical reaction mechanism, preparation, and modification of LiFePO₄. The main problems associated with LiFePO₄ cathode materials and possible solutions are discussed. We have also investigated the future research direction and application prospect of LiFePO₄ cathode materials.
- LiFePO₄,
- Research progress,
- Electrochemical reaction mechanism,
- Preparation method,
- Modification
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New Research Progress of the Electrochemical Reaction Mechanism, Preparation and Modification for LiFePO₄