Directing the deposition of lithium metal to the inner concave surface of graphitic carbon tubes to enable lithium-metal batteries

Selective deposition of lithium into a carbonaceous host is considered an effective strategy to prevent the growth of lithium metal dendrities. However, selective deposition of lithium metal into the inner spaces of a hollow carbonaceous host without nucleation seeds remains challenging. Herein, sel...

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Bibliographic Details
Published in:Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2021-08, Vol.9 (31), p.16936-16942
Main Authors: Chen, Weilin, Hong, Youran, Zhao, Zehua, Zhang, Yuting, Pan, Linhai, Wan, Jia, Nazir, Maria, Wang, Jiangwei, He, Haiyong
Format: Article
Language:English
Subjects:
Batteries
Carbon
Deposition
Electrochemical analysis
Electrochemistry
Electron tubes
Graphite
Life span
Lithium
Lithium batteries
Metals
Morphology
Nucleation
Seeds
Transmission electron microscopy
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Summary:Selective deposition of lithium into a carbonaceous host is considered an effective strategy to prevent the growth of lithium metal dendrities. However, selective deposition of lithium metal into the inner spaces of a hollow carbonaceous host without nucleation seeds remains challenging. Herein, selective deposition of lithium metal is introduced by utilizing the difference in the nucleation barrier of lithium on the inner and outer surface of graphitic tubes. In situ transmission electron microscopy data indicated that uniform deposition of lithium metal into the hollow surface of graphite tubes occurred in the absence of electrolyte, and continued until the tube was fully filled. To increase the amount of lithium that can be accommodated, we contrived a novel method for preparing supersized graphite carbon tubes (S-GCTs) and demonstrated the relationship between morphology and electrochemical performance. Electrochemical study proved that the S-GCTs exhibited high coulombic efficiency (99.3% over 350 cycles) and long-running lifespan (>1200 h) with a low overpotential (
ISSN:2050-7488
2050-7496
DOI:10.1039/d1ta04303j