过电位
成核
材料科学
金属锂
锂(药物)
金属
锂离子电池
基质(水族馆)
化学工程
Atom(片上系统)
电池(电)
碳纤维
电解质
电化学
阳极
电极
无机化学
阴极
物理化学
热力学
冶金
化学
复合材料
计算机科学
功率(物理)
嵌入式系统
内分泌学
工程类
地质学
物理
海洋学
复合数
医学
作者
Yongjun Sun,Jinqiu Zhou,Haoqing Ji,Jie Liu,Tao Qian,Chenglin Yan
标识
DOI:10.1021/acsami.9b10551
摘要
High lithium nucleation overpotential on a lithiophobic matrix results in uncontrollable growth of lithium dendrites and thus restricts the wide application of lithium-metal batteries. Herein, the single-atom iron in a N-doped carbon matrix (FeSA-N-C) is first reported as a lithiophilic site to minimize Li nucleation overpotential from 18.6 mV to a very low value of 0.8 mV. Molecular dynamics simulations quantitatively confirmed the excellent affinity between Li ions and FeSA-N-C in the atomic level. Induced by the homogeneously distributed FeSA-N in the carbon substrate, uniform and stable metallic Li plating/stripping behaviors are realized and lithium dendrite growth is greatly suppressed. The proposed strategy of using single-atom iron as a lithiophilic site to minimize lithium nucleation overpotential opens a promising avenue for solving intrinsic problems of Li-metal-based batteries.
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