Journal
CHINESE CHEMICAL LETTERS
Volume 33, Issue 1, Pages 141-152Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.cclet.2021.08.097
Keywords
Electrospinning; Lithium metal anodes; Carbon nanofibers; Lithiophilic hosts; Three-dimensional skeletons
Categories
Funding
- National Natural Science Foundation of China [22179022, 22109023]
- IndustryUniversity-Research Joint Innovation Project of Fujian Province [2021H6006]
- Award Program for Fujian Minjiang Scholar Professorship
- Talent Fund Program of Fujian Normal University
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Li metal anodes have high theoretical capacity but suffer from dendritic growth and volume change. Electrospun carbon nanofibers (CNFs) have been explored as promising scaffolds to inhibit dendrite growth and accommodate volume change.
Li metal anodes (LMAs) has attracted extensive research interest because of its extremely high theoretical capacity (3860 mAh/g) at low redox potential (-3.04 V vs. standard hydrogen electrode). However, the extremely high chemical reactivity and the intrinsic hostless nature of LMAs bring about serious dendritic growth and dramatic volume change during the plating/strapping process, thus resulting in poor Coulombic efficiency, short lifespan, and severe safety concerns. Of various strategies, the construction of three-dimensional carbonaceous scaffolds for LMAs can substantially reduce the local current density, inhibit Li dendrite growth, and accommodate volume variation. Electrospinning is a simple yet effective strategy to fabricate carbon nanofibers (CNFs), which have been regarded as promising skeletons for LMAs, owing to their large surface areas, good electrical conductivity, and high porosity. In this Mini Review, we briefly introduce the fabrication of CNFs using electrospinning and the modification of CNFs. We highlight the recent advances in electrospun CNF skeletons for LMAs, including pure CNF and CNF-based composite scaffolds. Finally, we discuss the remaining challenges of electrospun CNF scaffolds for LMAs and provide possible solutions to push forward the advancement in this field. (C) 2021 Published by Elsevier B.V. on behalf of Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences.
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