锂(药物)
石墨
扩散
阳极
涂层
储能
纳米技术
材料科学
电池(电)
极化(电化学)
复合材料
化学
热力学
物理
电极
物理化学
功率(物理)
内分泌学
医学
量子力学
作者
Wenlong Cai,Chong Yan,Yuxing Yao,Lei Xu,Rui Xu,Lili Jiang,Jia‐Qi Huang,Qiang Zhang
标识
DOI:10.1002/sstr.202000010
摘要
The use of graphite anode renders practical lithium‐ion batteries for effective energy storage. However, graphite anode is the bottleneck to achieve the fast charging of a battery, ascribed to its low operating potential and corresponding incidental lithium plating. Herein the principle of a thin nanoscale layer on the graphite surface to improve charging capability is investigated by applying a three‐electrode device to precisely record the working behavior. The Li + diffusion rate is significantly improved by coating a nanoscale turbostratic carbon layer, in which abundant active sites and additional fast Li + diffusion pathways at the basal‐plane side of graphite sheets render small polarization in a working battery. This fresh understanding enriches the fundamental insights into enhancing the rate performance and facilitating the practical applications of graphite in fast‐charging batteries.
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