Bismuth-Contained Lithiophilic Protective Layer on Lithium Metal Anode In Situ Generated via Electrochemical Method

Yulong Shao; Yinping Qin; Yingying Song; Kaiyun Xu; Hefeng Wang; Cai Shen; Riming Chen; Yingchun Lyu; Yang Liu; Bingkun Guo

doi:10.1021/acssuschemeng.2c02652

Bismuth-Contained Lithiophilic Protective Layer on Lithium Metal Anode In Situ Generated via Electrochemical Method

Yulong Shao, Yinping Qin, Yingying Song, Kaiyun Xu, Hefeng Wang, Cai Shen, Riming Chen, Yingchun Lyu, Yang Liu, Bingkun Guo

CBI Green Chemicals and Energy Centre

Research output: Journal Publication › Article › peer-review

9 Citations (Scopus)

Abstract

Lithium metal anode (LMA) faces the challenge of poor electrochemical performances in the exfoliation of the interfacial protective layer from the anode, which is caused by the dramatic volumetric variation of the lithium metal during cycling. In this work, a bismuth-contained lithiophilic protective layer was spontaneously formed on the Li metal by the Bi(TFSI)3 salt additive. The protective layer formed via electrochemical way is relatively dense and homogeneous with a small size of ∼38 nm Li3Bi alloy and abundant LiF. This layer shows excellent property of uniform lithium deposition and displays enough mechanical strength with the Young's modulus of ∼6 GPa to suppress Li dendrite growth and reduces the interfacial side reactions. Utilized in LiFePO4/Li cells, the cyclic performance has been improved with the retention capacity of ∼70.6% in 300 cycles.

Original language	English
Pages (from-to)	11493-11500
Number of pages	8
Journal	ACS Sustainable Chemistry and Engineering
Volume	10
Issue number	35
DOIs	https://doi.org/10.1021/acssuschemeng.2c02652
Publication status	Published - 5 Sept 2022

Keywords

Bi(TFSI)
electrolyte additive
fluoride-rich
Li metal
Protective layer

ASJC Scopus subject areas

General Chemistry
Environmental Chemistry
General Chemical Engineering
Renewable Energy, Sustainability and the Environment

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1021/acssuschemeng.2c02652

Cite this

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title = "Bismuth-Contained Lithiophilic Protective Layer on Lithium Metal Anode In Situ Generated via Electrochemical Method",

abstract = "Lithium metal anode (LMA) faces the challenge of poor electrochemical performances in the exfoliation of the interfacial protective layer from the anode, which is caused by the dramatic volumetric variation of the lithium metal during cycling. In this work, a bismuth-contained lithiophilic protective layer was spontaneously formed on the Li metal by the Bi(TFSI)3 salt additive. The protective layer formed via electrochemical way is relatively dense and homogeneous with a small size of ∼38 nm Li3Bi alloy and abundant LiF. This layer shows excellent property of uniform lithium deposition and displays enough mechanical strength with the Young's modulus of ∼6 GPa to suppress Li dendrite growth and reduces the interfacial side reactions. Utilized in LiFePO4/Li cells, the cyclic performance has been improved with the retention capacity of ∼70.6% in 300 cycles.",

keywords = "Bi(TFSI), electrolyte additive, fluoride-rich, Li metal, Protective layer",

author = "Yulong Shao and Yinping Qin and Yingying Song and Kaiyun Xu and Hefeng Wang and Cai Shen and Riming Chen and Yingchun Lyu and Yang Liu and Bingkun Guo",

note = "Funding Information: We sincerely thank for all support to this work. Author Y.L. received funding from the National Natural Science Foundation of China (grant no. 22075172). Publisher Copyright: {\textcopyright} 2022 American Chemical Society.",

year = "2022",

month = sep,

day = "5",

doi = "10.1021/acssuschemeng.2c02652",

language = "English",

volume = "10",

pages = "11493--11500",

journal = "ACS Sustainable Chemistry and Engineering",

issn = "2168-0485",

publisher = "American Chemical Society",

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TY - JOUR

T1 - Bismuth-Contained Lithiophilic Protective Layer on Lithium Metal Anode In Situ Generated via Electrochemical Method

AU - Shao, Yulong

AU - Qin, Yinping

AU - Song, Yingying

AU - Xu, Kaiyun

AU - Wang, Hefeng

AU - Shen, Cai

AU - Chen, Riming

AU - Lyu, Yingchun

AU - Liu, Yang

AU - Guo, Bingkun

N1 - Funding Information: We sincerely thank for all support to this work. Author Y.L. received funding from the National Natural Science Foundation of China (grant no. 22075172). Publisher Copyright: © 2022 American Chemical Society.

PY - 2022/9/5

Y1 - 2022/9/5

N2 - Lithium metal anode (LMA) faces the challenge of poor electrochemical performances in the exfoliation of the interfacial protective layer from the anode, which is caused by the dramatic volumetric variation of the lithium metal during cycling. In this work, a bismuth-contained lithiophilic protective layer was spontaneously formed on the Li metal by the Bi(TFSI)3 salt additive. The protective layer formed via electrochemical way is relatively dense and homogeneous with a small size of ∼38 nm Li3Bi alloy and abundant LiF. This layer shows excellent property of uniform lithium deposition and displays enough mechanical strength with the Young's modulus of ∼6 GPa to suppress Li dendrite growth and reduces the interfacial side reactions. Utilized in LiFePO4/Li cells, the cyclic performance has been improved with the retention capacity of ∼70.6% in 300 cycles.

AB - Lithium metal anode (LMA) faces the challenge of poor electrochemical performances in the exfoliation of the interfacial protective layer from the anode, which is caused by the dramatic volumetric variation of the lithium metal during cycling. In this work, a bismuth-contained lithiophilic protective layer was spontaneously formed on the Li metal by the Bi(TFSI)3 salt additive. The protective layer formed via electrochemical way is relatively dense and homogeneous with a small size of ∼38 nm Li3Bi alloy and abundant LiF. This layer shows excellent property of uniform lithium deposition and displays enough mechanical strength with the Young's modulus of ∼6 GPa to suppress Li dendrite growth and reduces the interfacial side reactions. Utilized in LiFePO4/Li cells, the cyclic performance has been improved with the retention capacity of ∼70.6% in 300 cycles.

KW - Bi(TFSI)

KW - electrolyte additive

KW - fluoride-rich

KW - Li metal

KW - Protective layer

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U2 - 10.1021/acssuschemeng.2c02652

DO - 10.1021/acssuschemeng.2c02652

M3 - Article

AN - SCOPUS:85137282421

SN - 2168-0485

VL - 10

SP - 11493

EP - 11500

JO - ACS Sustainable Chemistry and Engineering

JF - ACS Sustainable Chemistry and Engineering

IS - 35

ER -

Bismuth-Contained Lithiophilic Protective Layer on Lithium Metal Anode In Situ Generated via Electrochemical Method

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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