Bi-doped carbon dots for a stable lithium metal anode

Hanyu Tu; Shuo Li; Zheng Luo; Laiqiang Xu; Hao Zhang; Yinger Xiang; Wentao Deng; Guoqiang Zou; Hongshuai Hou; Xiaobo Ji

doi:10.1039/D2CC01334G

Bi-doped carbon dots for a stable lithium metal anode†

Hanyu Tu,^a Shuo Li,^a Zheng Luo,^a Laiqiang Xu,^a Hao Zhang,^a Yinger Xiang,^a Wentao Deng,^a Guoqiang Zou,

^a Hongshuai Hou

*^a and Xiaobo Ji

^ab

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* Corresponding authors

^a College of Chemistry and Chemical Engineering, Central South University, Changsha, China
E-mail: hs-hou@csu.edu.cn

^b School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, China

Abstract

Bi-doped carbon dots (Bi-CDs) with rich polar groups and good compatibility were employed as co-deposition electrolyte additives to homogenize Li⁺ flux for dendrite-free Li deposition. High coulombic efficiency (99.0%) and long-term stability (800 h) with reduced overpotential (∼15 mV) were achieved after introducing Bi-CDs in conventional electrolyte for high-performance Li–S batteries.

Chemical Communications

Bi-doped carbon dots for a stable lithium metal anode†

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