Improved performances of lithium carbonate coated graphite in the piperidinium‐based hybrid electrolyte for lithium‐ion battery,Journal of the Chinese Chemical Society

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Improved performances of lithium carbonate coated graphite in the piperidinium‐based hybrid electrolyte for lithium‐ion battery
Journal of the Chinese Chemical Society ( IF 1.6 ) Pub Date : 2020-03-16 , DOI: 10.1002/jccs.201900500
Kun Gao ₁ , Shu‐Dan Li ₁

Affiliation

The lithium carbonate (Li₂CO₃)‐coated carbon microbead composites (LCO/CMB‐T) with the coating amount of 1.07, 2.88, and 7.39% are prepared by the impregnation process (IP). Three LCO/CMB‐T samples are first used in the piperidinium‐based hybrid electrolyte. It is found that the long charge–discharge cycles did not result in the decomposition or exfoliation of Li₂CO₃ coating. They can effectively prevent graphite electrode from exfoliation and suppress the graphite/electrolyte interfacial reaction. In three tested samples (IP‐1.07%, IP‐2.88% and IP‐7.39% for short), the IP‐2.88% sample showed the best cell performances and the highest capacity retention (82.9%) after 50 cycles. This work gives a new design method for the application of graphite materials in the ionic liquid‐based electrolyte.

中文翻译：

锂离子电池用哌啶基混合电解质中碳酸锂涂层石墨的性能改善

通过浸渍法（IP）制备了涂覆量为1.07％，2.88％和7.39％的碳酸锂（Li ₂ CO ₃）涂覆的碳微珠复合材料（LCO / CMB-T）。首先在基于哌啶的混合电解质中使用了三个LCO / CMB-T样品。发现长的充放电循环不会导致Li ₂ CO ₃的分解或剥落。涂层。它们可以有效地防止石墨电极剥落并抑制石墨/电解质的界面反应。在三个测试样本（简称IP-1.07％，IP-2.88％和IP-7.39％）中，IP-2.88％的样本在50个循环后显示出最佳的电池性能和最高的容量保持率（82.9％）。这项工作为石墨材料在离子液体基电解质中的应用提供了一种新的设计方法。

更新日期：2020-03-16

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