PAN/PI functional double-layer coating for dendrite-free lithium metal anodes

Fei Shen; Kaiming Wang; Yuting Yin; Le Shi; Dingyuan Zeng; Xiaogang Han; Xiaogang Han

doi:10.1039/c9ta13678a

PAN/PI functional double-layer coating for dendrite-free lithium metal anodes

Fei Shen
, Kaiming Wang
, Yuting Yin
, Le Shi
, Dingyuan Zeng
, Xiaogang Han
, Xiaogang Han

School of Electrical Engineering

Xi'an Jiaotong University
The Key Laboratory of Computer Network in Shaanxi Province

Research output: Contribution to journal › Article › peer-review

41 Scopus citations

Abstract

Li metal anodes attract intensive attention due to their high specific capacity, low density and the lowest electrochemical potential. However, inferior coulombic efficiency (CE) and safety hazards induced by uncontrollable Li dendrite growth are main obstacles against the commercialization of Li metal batteries (LMBs). Herein, we demonstrate that the polyacrylonitrile fiber/polyimide sphere (PAN fiber/PI sphere) double-layer coating can serve as an interfacial functional layer to guide uniform Li deposition and inhibit the formation of Li dendrites. Owing to polar groups and regularly arranged PI spheres of the coating layer, Li||PAN/PI@Cu cells display high coulombic efficiency and long cycle life at a current density of 1 mA cm^-2, maintaining an average CE of ∼98.5%

Original language	English
Pages (from-to)	6183-6189
Number of pages	7
Journal	Journal of Materials Chemistry A
Volume	8
Issue number	13
DOIs	https://doi.org/10.1039/c9ta13678a
State	Published - 7 Apr 2020

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title = "PAN/PI functional double-layer coating for dendrite-free lithium metal anodes",

abstract = "Li metal anodes attract intensive attention due to their high specific capacity, low density and the lowest electrochemical potential. However, inferior coulombic efficiency (CE) and safety hazards induced by uncontrollable Li dendrite growth are main obstacles against the commercialization of Li metal batteries (LMBs). Herein, we demonstrate that the polyacrylonitrile fiber/polyimide sphere (PAN fiber/PI sphere) double-layer coating can serve as an interfacial functional layer to guide uniform Li deposition and inhibit the formation of Li dendrites. Owing to polar groups and regularly arranged PI spheres of the coating layer, Li||PAN/PI@Cu cells display high coulombic efficiency and long cycle life at a current density of 1 mA cm-2, maintaining an average CE of ∼98.5\%",

author = "Fei Shen and Kaiming Wang and Yuting Yin and Le Shi and Dingyuan Zeng and Xiaogang Han and Xiaogang Han",

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doi = "10.1039/c9ta13678a",

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T1 - PAN/PI functional double-layer coating for dendrite-free lithium metal anodes

AU - Shen, Fei

AU - Wang, Kaiming

AU - Yin, Yuting

AU - Shi, Le

AU - Zeng, Dingyuan

AU - Han, Xiaogang

PY - 2020/4/7

Y1 - 2020/4/7

N2 - Li metal anodes attract intensive attention due to their high specific capacity, low density and the lowest electrochemical potential. However, inferior coulombic efficiency (CE) and safety hazards induced by uncontrollable Li dendrite growth are main obstacles against the commercialization of Li metal batteries (LMBs). Herein, we demonstrate that the polyacrylonitrile fiber/polyimide sphere (PAN fiber/PI sphere) double-layer coating can serve as an interfacial functional layer to guide uniform Li deposition and inhibit the formation of Li dendrites. Owing to polar groups and regularly arranged PI spheres of the coating layer, Li||PAN/PI@Cu cells display high coulombic efficiency and long cycle life at a current density of 1 mA cm-2, maintaining an average CE of ∼98.5%

AB - Li metal anodes attract intensive attention due to their high specific capacity, low density and the lowest electrochemical potential. However, inferior coulombic efficiency (CE) and safety hazards induced by uncontrollable Li dendrite growth are main obstacles against the commercialization of Li metal batteries (LMBs). Herein, we demonstrate that the polyacrylonitrile fiber/polyimide sphere (PAN fiber/PI sphere) double-layer coating can serve as an interfacial functional layer to guide uniform Li deposition and inhibit the formation of Li dendrites. Owing to polar groups and regularly arranged PI spheres of the coating layer, Li||PAN/PI@Cu cells display high coulombic efficiency and long cycle life at a current density of 1 mA cm-2, maintaining an average CE of ∼98.5%

UR - https://www.scopus.com/pages/publications/85082818270

U2 - 10.1039/c9ta13678a

DO - 10.1039/c9ta13678a

M3 - 文章

AN - SCOPUS:85082818270

SN - 2050-7488

VL - 8

SP - 6183

EP - 6189

JO - Journal of Materials Chemistry A

JF - Journal of Materials Chemistry A

IS - 13

ER -

PAN/PI functional double-layer coating for dendrite-free lithium metal anodes

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