A novel method of preparing LiMPO4-C nano particles with organic P source

作者：Liu, Tao; Xia, Qingbo; Lu, Wei; Xu, Jingjing; Wu, Xiaodong^*

来源：Electrochimica Acta, 2015, 174: 120-126.

DOI：10.1016/j.electacta.2015.05.126

• Li-ion batteries
• cathode material
• organic phosphate
• nanoparticle
• carbon coating

An organic phosphorus source, a complex of dodecylamine and H3PO4, was used to prepare carbon coated LiMPO4 (M=Mn, Fe or Co) particles with a solid phase reaction. The obtained LiMnxFe1-xPO4-C particles were only about 50 nm, resulting from the restriction of the in-situ carbon coating layer formed by the decomposition of dodecylamine-H3PO4 complex. When used as the cathode materials of Li-ion batteries, LiMn0.7Fe0.3PO4 particles displayed a high discharge capacity of 158 mAh/g and good rate performance. Using these kinds of organic phosphorus salt, no other carbon source was required to be added in preparing carbon coated UMPO4 (M=Mn, Fe or Co) particles. This method was extended to other kind of organic amine including ethylenediamine, diaminopropane, butylamine and tetradecylamine.

• 出版日期2015-8-20
• 单位中国科学院苏州纳米技术与纳米仿生研究所