Effect of high temperature environment on the performance of LiNi0.5Co0.2Mn0.3O2 battery

Effect of high temperature environment on the performance of LiNi0.5Co0.2Mn0.3O2 battery
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高温环境对LiNi0.5Co0.2Mn0.3O2电池性能的影响

DOI:
10.1016/j.ijheatmasstransfer.2016.09.005
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发表时间:
2017
影响因子:
5.2
通讯作者:
Zhi Huang
Zhi Huang
中科院分区:
工程技术2区
文献类型:
--
作者:
Wenfu Situ;Xiaoqing Yang;Xinxi Li;Guoqing Zhang;Muming Rao;Chao Wei;Zhi Huang

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分别在30 ° C和50 °C工作环境下测试了18650三元LiNi0.5Co0.2Mn0.3O2电池的热产生行为。实验结果表明,由于内阻的增加,电池在50 °C高温下的表面温差和相应的升温速率均高于30 °C高温下的表面温差和升温速率,从而导致电池的储锂容量明显下降。通过表征三元正极材料的晶体/纳米结构,这些现象可以归因于晶体结构的破坏和电极材料的聚集。
Thermal generation behavior of 18650 ternary LiNi0.5Co0.2Mn0.3O2batteries was tested at working environment of 30 and 50 °C, respectively. The experimental results showed that the surface temperature difference of the battery at high temperature of 50 °C and its corresponding heating rate were both higher than those at 30 °C owing to the increased internal resistance, which also led to a decrease of lithium storage capacity obviously. By characterizing the crystal/nano structure of the ternary cathode materials, these phenomena could be ascribed to the damage of the crystal structure and aggregation of the electrode materials.
采用 sp(3) 硼基固体单离子导电聚合物电解质的全固态锂金属电池实现环境温度操作
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