Effect of mineralizer and surfactant on the performance of limn0.8fe0.2po4 cathode material by solvothermal method

被引：0
|
作者：
Niu Q. [1 ]
Ren L. [1 ]
机构：
[1] Polymer Science and Engineering Research Institute, Hebei University of Technology, Tianjin
来源：
Kuei Suan Jen Hsueh Pao/Journal of the Chinese Ceramic Society | 2018年 / 46卷 / 04期
关键词：
Lithium manganese phosphate; Lithium secondary battery; Mineralizer; Solvothermal method; Surfactant;
D O I：
10.14062/j.issn.0454-5648.2018.04.03
中图分类号：
学科分类号：
摘要：
LiMn0.8Fe0.2PO4 cathode materials were synthesized by a solvothermal method. The effects of mineralizer (i.e., KOH) and surfactant (i.e., didodecyldimethylammonium bromide (DDAB)) on the morphologies and electrochemical performances were investigated. The electrochemical performances were evaluated by galvanostatic charge-discharge tests, cyclic voltammetry and AC impedance tests. The results show that the use of either mineralizer KOH or surfactant DDAB can decrease the particle size, thus improving the electrochemical performances of material. The sample with the minimum particle size and the well-dispersive performance obtained using mineralizer KOH has the optimum effective carbon coating ratio and electrochemical performance with good cycle performance and rate performance. The capacity retention of material is 94.25% after 100 cycles at 0.2 C, the capacity is 157.4 mA•h/g and 99.2 mA•h/g at 0.1 C and 5.0 C, respectively, which are better than those of the base material. ©2018, Editorial Department of Journal of the Chinese Ceramic Society. All right reserved.
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页码：466 / 472
页数：6
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