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Title: Dendrite-free Li metal plating/stripping onto three-dimensional vertical-graphene@carbon-cloth host
Authors: Yan, Congcong
Xu, Tingting
Ma, Caiyun
Zang, Jinhao
Xu, Junmin
Shi, Yumeng
Kong, Dezhi
Ke, Chang
Li, Xinjian
Wang, Ye
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2019
Source: Yan, C., Xu, T., Ma, C., Zang, J., Xu, J., Shi, Y., ... Wang, Y. (2019). Dendrite-free Li metal plating/stripping onto three-dimensional vertical-graphene@carbon-cloth host. Frontiers in Chemistry, 7, 714-. doi:10.3389/fchem.2019.00714
Journal: Frontiers in Chemistry
Abstract: Lithium metal is deemed as an ideal anode material for next-generation lithium ion batteries (LIBs) due to its high specific capacity and low redox potential. However, uncontrolled lithium dendrite formation during electrochemical deposition leads to a low Coulombic efficiency and serious safety issues, dragging metallic lithium anodes out of practical application. One promising strategy to suppress lithium dendrite issues is employing a three-dimensional host with admirable conductivity and large surface area. Herein, a vertical graphene nanosheet grown on carbon cloth (VG/CC) synthesized is adopted as the Li deposition host. The three-dimensional VG/CC with a large surface area can provide abundant active nucleation sites and effectively reduce the current density, leading to homogeneous Li deposition to overcome the dendrite issue. The Li@VG/CC anode exhibits a dendrite-free morphology after a long cycle and superior electrochemical performance to that of planar Cu current collector. It delivers a small voltage hysteresis of 90.9 mV at a high current density of 10 mA cm-2 and a Coulombic efficiency of 99% over 100 cycles at 2 mA cm-2. Our results indicate that this all-carbon-based nanostructure host has great potential for next-generation Li metal batteries.
ISSN: 2296-2646
DOI: 10.3389/fchem.2019.00714
Schools: School of Electrical and Electronic Engineering 
Rights: © 2019 Yan, Xu, Ma, Zang, Xu, Shi, Kong, Ke, Li and Wang. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
Fulltext Permission: open
Fulltext Availability: With Fulltext
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