Constructing Stable Anodic Interphase for Quasi-Solid-State Lithium-Sulfur Batteries

Ying Wei; Fei Hu; Yuyu Li; Jiayi Yang; Wei Wang; Lixia Yuan; Wuxing Zhang; Zhen Li; Yunhui Huang

doi:10.1021/acsami.0c11761

Constructing Stable Anodic Interphase for Quasi-Solid-State Lithium-Sulfur Batteries

Ying Wei, Fei Hu, Yuyu Li, Jiayi Yang, Wei Wang, Lixia Yuan, Wuxing Zhang, Zhen Li, Yunhui Huang

Huazhong University of Science and Technology

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

11 Scopus citations

Abstract

Replacing organic porous separators with an inorganic solid-state electrolyte (SSE) is a promising strategy to suppress lithium dendrite and inhibit polysulfide dissolution in lithium-sulfur (Li-S) batteries. However, the realization of such a concept is still limited by the large interfacial resistance between SSE and lithium anode. Herein, a new electrolyte additive, copper fluoride (CuF2), is used in liquid electrolytes to construct a stable interphase between Li1.5Al0.5Ge1.5(PO4)3 (LAGP) SSE and Li metal for a quasi-solid-state Li-S battery. A Li||Li symmetric cell with ultralong life over 1500 h (at 0.1 mA cm-2) proves the excellent stability of the as-formed interphase. As a result, the assembled Li-S full cell presents high coulombic efficiency and stable cycling (750 mA h g-1 after 50 cycles) at room temperature with lean liquid electrolytes. This strategy provides an effective method for improving the electrochemical performance of Li-S batteries.

Original language	English
Pages (from-to)	39335-39341
Number of pages	7
Journal	ACS Applied Materials and Interfaces
Volume	12
Issue number	35
DOIs	https://doi.org/10.1021/acsami.0c11761
State	Published - 2 Sep 2020
Externally published	Yes

Keywords

copper fluoride
interface
lithium metal anode
lithium-sulfur batteries
quasi-solid-state batteries

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10.1021/acsami.0c11761

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@article{398ea6821e5243ce892fbc2e2c720602,

title = "Constructing Stable Anodic Interphase for Quasi-Solid-State Lithium-Sulfur Batteries",

abstract = "Replacing organic porous separators with an inorganic solid-state electrolyte (SSE) is a promising strategy to suppress lithium dendrite and inhibit polysulfide dissolution in lithium-sulfur (Li-S) batteries. However, the realization of such a concept is still limited by the large interfacial resistance between SSE and lithium anode. Herein, a new electrolyte additive, copper fluoride (CuF2), is used in liquid electrolytes to construct a stable interphase between Li1.5Al0.5Ge1.5(PO4)3 (LAGP) SSE and Li metal for a quasi-solid-state Li-S battery. A Li||Li symmetric cell with ultralong life over 1500 h (at 0.1 mA cm-2) proves the excellent stability of the as-formed interphase. As a result, the assembled Li-S full cell presents high coulombic efficiency and stable cycling (750 mA h g-1 after 50 cycles) at room temperature with lean liquid electrolytes. This strategy provides an effective method for improving the electrochemical performance of Li-S batteries.",

keywords = "copper fluoride, interface, lithium metal anode, lithium-sulfur batteries, quasi-solid-state batteries",

author = "Ying Wei and Fei Hu and Yuyu Li and Jiayi Yang and Wei Wang and Lixia Yuan and Wuxing Zhang and Zhen Li and Yunhui Huang",

note = "Publisher Copyright: {\textcopyright} 2020 American Chemical Society.",

year = "2020",

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doi = "10.1021/acsami.0c11761",

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T1 - Constructing Stable Anodic Interphase for Quasi-Solid-State Lithium-Sulfur Batteries

AU - Wei, Ying

AU - Hu, Fei

AU - Li, Yuyu

AU - Yang, Jiayi

AU - Wang, Wei

AU - Yuan, Lixia

AU - Zhang, Wuxing

AU - Li, Zhen

AU - Huang, Yunhui

PY - 2020/9/2

Y1 - 2020/9/2

N2 - Replacing organic porous separators with an inorganic solid-state electrolyte (SSE) is a promising strategy to suppress lithium dendrite and inhibit polysulfide dissolution in lithium-sulfur (Li-S) batteries. However, the realization of such a concept is still limited by the large interfacial resistance between SSE and lithium anode. Herein, a new electrolyte additive, copper fluoride (CuF2), is used in liquid electrolytes to construct a stable interphase between Li1.5Al0.5Ge1.5(PO4)3 (LAGP) SSE and Li metal for a quasi-solid-state Li-S battery. A Li||Li symmetric cell with ultralong life over 1500 h (at 0.1 mA cm-2) proves the excellent stability of the as-formed interphase. As a result, the assembled Li-S full cell presents high coulombic efficiency and stable cycling (750 mA h g-1 after 50 cycles) at room temperature with lean liquid electrolytes. This strategy provides an effective method for improving the electrochemical performance of Li-S batteries.

AB - Replacing organic porous separators with an inorganic solid-state electrolyte (SSE) is a promising strategy to suppress lithium dendrite and inhibit polysulfide dissolution in lithium-sulfur (Li-S) batteries. However, the realization of such a concept is still limited by the large interfacial resistance between SSE and lithium anode. Herein, a new electrolyte additive, copper fluoride (CuF2), is used in liquid electrolytes to construct a stable interphase between Li1.5Al0.5Ge1.5(PO4)3 (LAGP) SSE and Li metal for a quasi-solid-state Li-S battery. A Li||Li symmetric cell with ultralong life over 1500 h (at 0.1 mA cm-2) proves the excellent stability of the as-formed interphase. As a result, the assembled Li-S full cell presents high coulombic efficiency and stable cycling (750 mA h g-1 after 50 cycles) at room temperature with lean liquid electrolytes. This strategy provides an effective method for improving the electrochemical performance of Li-S batteries.

KW - copper fluoride

KW - interface

KW - lithium metal anode

KW - lithium-sulfur batteries

KW - quasi-solid-state batteries

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DO - 10.1021/acsami.0c11761

M3 - 文章

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AN - SCOPUS:85090266348

SN - 1944-8244

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JO - ACS Applied Materials and Interfaces

JF - ACS Applied Materials and Interfaces

IS - 35

ER -

Constructing Stable Anodic Interphase for Quasi-Solid-State Lithium-Sulfur Batteries

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