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La-doping and carbon-coating collaboratively enhance the cycling and rate properties of LiFeBO3 for Li-ion battery
Chemical Physics Letters ( IF 2.8 ) Pub Date : 2020-01-07 , DOI: 10.1016/j.cplett.2020.137090
Lei Ming , Bao Zhang , Chunhui Wang , Xing Ou , Jiafeng Zhang , Zhanhong Yang

The component-optimal LiFe1-xLaxBO3@C materials with carbon-coating and La-doping have been synthesized by the mechanical milling and post-calcination. In this co-modified LiFe1-xLaxBO3@C, the synergistic effect of high-stability LiFe1-xLaxBO3 and superior-conductive carbon network, provides a stable framework to restrain the structure pulverization and enhances the electron conductivity simultaneously, effectively improving the Li+-storage capability. When served as the cathode of Li-ion battery, the LiFe0.99La0.01BO3@C shows the best battery performance, exhibiting a discharge capacity of 104.1 mA h g-1 at a current density of 40 mA g-1. As expected, the strategy of La-doping and carbon-coating could effectively enhance cycling and rate performances of LiFeBO3.



中文翻译:

La掺杂和碳涂层共同增强了锂离子电池LiFeBO 3的循环和倍率性能

通过机械研磨和后煅烧合成了成分最优的具有碳涂层和La掺杂的LiFe 1-x La x BO 3 @C材料。在这种共改性的LiFe 1-x La x BO 3 @C中,高稳定性LiFe 1-x La x BO 3和超导电碳网络的协同作用,提供了稳定的框架来抑制结构粉化并增强同时具有电子传导性,有效提高了Li +的储存能力。当用作锂离子电池的正极时,LiFe 0.99 La 0.01 BO图3 @ C显示了最佳的电池性能,在40mA g -1的电流密度下表现出104.1 mA hg -1的放电容量。如预期的那样,La掺杂和碳涂层的策略可以有效地增强LiFeBO 3的循环和速率性能。

更新日期:2020-01-07
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