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首页> 外文期刊>Journal of power sources >Electrochemical properties of LiNi_(0.5)Mn_(1.5)O_4 cathode after Cr doping
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Electrochemical properties of LiNi_(0.5)Mn_(1.5)O_4 cathode after Cr doping

机译：Cr掺杂后LiNi_（0.5）Mn_（1.5）O_4阴极的电化学性能

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摘要

The structure and electrochemical properties of Cr doped LiNi_(0.5-x)Mn_(1.5)Cr_xO_4 cathodes with different Cr contents (x = 0.00,0.01,0.03, and 0.05) were investigated by X-ray diffraction, SEM, cyclic voltammetry, charge-discharge tests, and thermogravimetric analysis. In particular, restoration of Li in the cathode during intercalation was carefully analyzed by employing heating-cooling cycles of thermogravimetric technique. Results showed that the initial discharge capacity and capacity retention of the LiNi_(0.5-x)Mn_(0.5)Cr_xO_4 cathode were improved as the Cr content was increased. Thermal analysis and CV test results suggested that the improvement of the electrochemical properties of the Cr doped LiNi_(0.5-x)Mn_(0.5)Cr_xO_4 cathode was attributed to the high oxygen affinity of the Cr, which reduced oxygen deficiency and improved structural stability of the cathode.
机译：通过X射线衍射，SEM，循环伏安法，电荷法研究了Cr含量不同（x = 0.00、0.01、0.03和0.05）的Cr掺杂LiNi_（0.5-x）Mn_（1.5）Cr_xO_4阴极的结构和电化学性能。放电测试和热重分析。特别地，通过采用热重技术的加热-冷却循环仔细地分析了插层期间阴极中Li的恢复。结果表明，随着Cr含量的增加，LiNi_（0.5-x）Mn_（0.5）Cr_xO_4阴极的初始放电容量和容量保持能力得到改善。热分析和CV测试结果表明，Cr掺杂的LiNi_（0.5-x）Mn_（0.5）Cr_xO_4阴极的电化学性能的改善归因于Cr的高氧亲和力，这减少了氧的缺乏并改善了Ni的结构稳定性。阴极。

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