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
复制
发表时间:
2015-08
期刊:
影响因子:
3.9
通讯作者:
Baojun Li
Baojun Li
中科院分区:
化学3区
文献类型:
--
作者:
Yafang Wang;Xiaokun Shang;Chuangchun Yang;Baojun Li

文献摘要

参考文献

相似文献

采用水相混合工艺结合流变相技术制备了LiFePO 4前驱体。由于起始材料的均匀混合,在所制备的LiFePO 4材料中获得了掺杂原子和涂覆碳的均匀分布。在所制备的样品中存在Fe ~(3+)价态。元素和小颗粒的均匀分布,以及通过控制非化学计量比产生的Fe 3+表面相,提高了电子电导率。所制备的LiFePO 4样品在0.1C下的放电容量为166 mA h g−1,并且在1C下呈现出148 mA h g−1的优异倍率容量和3.32 V的高电位平台。在1C下循环150次或在10 C下循环200次后,保持约100%的容量保持率。这种水相球磨工艺是以合理的成本大规模生产高质量LiFePO 4材料的有前途的路线。
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.
DOI: 10.1016/j.electacta.2013.11.106
发表时间: 2014-01
影响因子: 6.6
作者:
Yu Long;Ye Shu;Xiaohua Ma;Minxing Ye
通讯作者: Yu Long;Ye Shu;Xiaohua Ma;Minxing Ye
DOI: 10.1007/s10008-013-2319-5
发表时间: 2014
影响因子: 2.5
作者:
Gu Ningyu;Wang Hao;Li Yang;Ma Hongyu;He Xinghua;Yang Zhenyu
通讯作者: Yang Zhenyu
DOI: 10.1002/anie.200802539
发表时间: 2008-01-01
影响因子: 16.6
作者:
Wang, Yonggang;Wang, Yarong;Zhou, Haoshen
通讯作者: Zhou, Haoshen
DOI: 10.1016/j.jpowsour.2013.05.096
发表时间: 2013-11
影响因子: 9.2
作者:
Lifeng Cheng;G. Liang;Soumia El Khakani;D. MacNeil
通讯作者: Lifeng Cheng;G. Liang;Soumia El Khakani;D. MacNeil
DOI: 10.1016/j.jpowsour.2007.02.002
发表时间: 2007-05-01
影响因子: 9.2
作者:
Wang, L. N.;Zhang, Z. G.;Zhang, K. L.
通讯作者: Zhang, K. L.