期刊
ACS APPLIED MATERIALS & INTERFACES
卷 11, 期 35, 页码 32008-32014出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.9b10551
关键词
single-atom iron; lithiophilic sites; nucleation overpotential; metal battery anodes; coulombic efficiency
资金
- National Natural Science Foundations of China [51622208, 21703149, 51872193, 5192500409]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
High lithium nucleation overpotential on a lithiophobic matrix results in uncontrollable growth of lithium dendrites and thus restricts the wide application of lithiummetal batteries. Herein, the single-atom iron in a N-doped carbon matrix (Fe-SA-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 Fe-SA-N-C in the atomic level. Induced by the homogeneously distributed Fe-SA-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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