Bismuth phosphate: A novel cathode material based on conversion reaction for lithium-ion batteries
Journal of Alloys and Compounds, ISSN: 0925-8388, Vol: 579, Page: 18-26
2013
- 29Citations
- 34Captures
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Article Description
Here, we provide a new scientific insight in the field of lithium-ion batteries, in which BiPO 4 is initially reported as a cathode material based on conversion reaction. BiPO 4 exists in three polymorphic phases, which have been synthesized using a room-temperature liquid precipitation route followed by heating treatment. The effects of phase transformation on electrochemical performances of BiPO 4 have been investigated. Herein the hexagonal BiPO 4 exhibits the best reversibility, rate capability and cycling stability. A conversion reaction has also been proved to occur in BiPO 4 with reduction of BiPO 4 into a metallic Bi 0 phase and a Li 3 PO 4 phase upon lithiation, and the reformation of BiPO 4 phase during next charge process. Its theoretical specific capacity and theoretical output voltage are 264.5 mA h g −1 and ∼3.14 V, respectively. Especially, its theoretical volumetric energy density is as high as 5253.1 Wh L −1, close to twice higher than LiCoO 2. Therefore, it is still worthy of further study for lithium-ion batteries.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0925838813012097; http://dx.doi.org/10.1016/j.jallcom.2013.05.049; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84878398662&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S0925838813012097; https://dx.doi.org/10.1016/j.jallcom.2013.05.049
Elsevier BV
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