Large-scale preparation of Mg doped LiFePO4@C for lithium ion batteries via carbon thermal reduction combined with aqueous rheological phase technology
Large-scale preparation of Mg doped LiFePO4@C for lithium ion batteries via carbon thermal reduction combined with aqueous rheological phase technology
复制标题
碳热还原结合水流变相技术大规模制备锂离子电池用镁掺杂LiFePO4@C
DOI:
10.1039/c5ra11680e
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发表时间:
2015-08
期刊:
影响因子:
3.9
通讯作者:
Baojun Li
中科院分区:
文献类型:
--
作者:
Yafang Wang;Xiaokun Shang;Chuangchun Yang;Baojun Li
A LiFePO4 precursor was prepared using an aqueous mixing process combined with rheological phase technology. Due to homogeneous mixing of the starting materials, a uniform distribution of doped atoms and coated carbon in the as-prepared LiFePO4 material was obtained. There existed a Fe3+ valence state of iron in the as-prepared sample. The uniform distribution of elements and small particles, and the surface phase of Fe3+ generated through controlled off-stoichiometry, improved the electronic conductivity. The as-prepared LiFePO4 sample delivered a discharge capacity of 166 mA h g−1 at 0.1C and presented an excellent rate capacity of 148 mA h g−1 and a high potential plateau of 3.32 V at 1C. Approximately 100% capacity retention was maintained after 150 cycles at 1C or 200 cycles at 10C. This aqueous ball-milling process is a promising route for scaled-up production of LiFePO4 materials with high quality at a reasonable cost.
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影响因子:
6.6
作者:
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影响因子:
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影响因子:
9.2
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通讯作者:
Zhang, K. L.