Engineering conductive and catalytic triple-phase interfaces for high efficiency polysulfides conversion in Li-S batteries

Benben Wei; Yang Tu; Yu Xia; Wolfgang Theis; Junxian Zhang; Zian Xu; Shaoqing Chen; Jian Chen; Guoxin Yin; Hsing Lin Wang

doi:10.1016/j.cej.2023.144887

Engineering conductive and catalytic triple-phase interfaces for high efficiency polysulfides conversion in Li-S batteries

Benben Wei, Yang Tu, Yu Xia, Wolfgang Theis, Junxian Zhang, Zian Xu, Shaoqing Chen, Jian Chen, Guoxin Yin, Hsing Lin Wang^*

^*Corresponding author for this work

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

Abstract

The well-known shuttle effect of lithium polysulfides (LiPSs) in the ether-based liquid electrolyte and polymer solid electrolytes are the main roadblocks of Li-S batteries to perform high discharge capacity with a long cycling lifespan. Herein, a triple phase interface among carbon/catalysts (vanadium single atoms (VSAs) and metallic cobalt nanoparticles (CoNPs))/electrolyte is proposed for the high-performance Li-S batteries. At the triple-phase interfaces, the LiPSs are chemically immobilized and electrocatalytically transformed into insoluble Li₂S at the rate-determining process of liquid–solid conversion. The nucleation and growth of Li₂S precipitates were dominated by the interface chemistry and the dispersion of catalysts (3D reconstruction image). In the Li-S batteries with liquid ether-based electrolytes, a discharge capacity of 1343 mAh g⁻¹ was achieved at 0.1 C and the decay of capacity was decelerated with 0.05% per cycle for 500 cycles at 1 C, as well as superb rate capability (808 mAh·g⁻¹ at 5 C). The triple phase interfaces also exhibited high performance in solid state Li-S batteries with solid polymer electrolytes, which the discharge capacity reaches 1289 mAh·g⁻¹ at 0.05 C and 849 mAh·g⁻¹ at 0.5 C.

Original language	English
Article number	144887
Number of pages	8
Journal	Chemical Engineering Journal
Volume	473
Early online date	2 Aug 2023
DOIs	https://doi.org/10.1016/j.cej.2023.144887
Publication status	Published - 1 Oct 2023

Bibliographical note

Funding Information:
The authors would like to acknowledge the financial support from Leading talents of Guangdong Provincial Key Laboratory of Energy Materials for Electric Power (2018B030322001) and Shenzhen Key Laboratory of Solid State Batteries (ZDSYS20180208184346531) Guangdong province program (2016LJ06N507), Shenzhen Basic Research Fund (CYJ20170817110652558). S/TEM images and the EDS were obtained using the Titan Themis G2 and FEI Talos F200 maintained by Southern University of Science and Technology Core Research Facilities.

Publisher Copyright:
© 2023 Elsevier B.V.

Keywords

Catalysts
Cobalt nanoparticles
Li-S batteries
Solid state batteries
Vanadium single atoms

ASJC Scopus subject areas

General Chemistry
Environmental Chemistry
General Chemical Engineering
Industrial and Manufacturing Engineering

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title = "Engineering conductive and catalytic triple-phase interfaces for high efficiency polysulfides conversion in Li-S batteries",

abstract = "The well-known shuttle effect of lithium polysulfides (LiPSs) in the ether-based liquid electrolyte and polymer solid electrolytes are the main roadblocks of Li-S batteries to perform high discharge capacity with a long cycling lifespan. Herein, a triple phase interface among carbon/catalysts (vanadium single atoms (VSAs) and metallic cobalt nanoparticles (CoNPs))/electrolyte is proposed for the high-performance Li-S batteries. At the triple-phase interfaces, the LiPSs are chemically immobilized and electrocatalytically transformed into insoluble Li2S at the rate-determining process of liquid–solid conversion. The nucleation and growth of Li2S precipitates were dominated by the interface chemistry and the dispersion of catalysts (3D reconstruction image). In the Li-S batteries with liquid ether-based electrolytes, a discharge capacity of 1343 mAh g−1 was achieved at 0.1 C and the decay of capacity was decelerated with 0.05% per cycle for 500 cycles at 1 C, as well as superb rate capability (808 mAh·g−1 at 5 C). The triple phase interfaces also exhibited high performance in solid state Li-S batteries with solid polymer electrolytes, which the discharge capacity reaches 1289 mAh·g−1 at 0.05 C and 849 mAh·g−1 at 0.5 C.",

keywords = "Catalysts, Cobalt nanoparticles, Li-S batteries, Solid state batteries, Vanadium single atoms",

author = "Benben Wei and Yang Tu and Yu Xia and Wolfgang Theis and Junxian Zhang and Zian Xu and Shaoqing Chen and Jian Chen and Guoxin Yin and Wang, {Hsing Lin}",

note = "Funding Information: The authors would like to acknowledge the financial support from Leading talents of Guangdong Provincial Key Laboratory of Energy Materials for Electric Power (2018B030322001) and Shenzhen Key Laboratory of Solid State Batteries (ZDSYS20180208184346531) Guangdong province program (2016LJ06N507), Shenzhen Basic Research Fund (CYJ20170817110652558). S/TEM images and the EDS were obtained using the Titan Themis G2 and FEI Talos F200 maintained by Southern University of Science and Technology Core Research Facilities. Publisher Copyright: {\textcopyright} 2023 Elsevier B.V.",

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AU - Wei, Benben

AU - Tu, Yang

AU - Xia, Yu

AU - Theis, Wolfgang

AU - Zhang, Junxian

AU - Xu, Zian

AU - Chen, Shaoqing

AU - Chen, Jian

AU - Yin, Guoxin

AU - Wang, Hsing Lin

N1 - Funding Information: The authors would like to acknowledge the financial support from Leading talents of Guangdong Provincial Key Laboratory of Energy Materials for Electric Power (2018B030322001) and Shenzhen Key Laboratory of Solid State Batteries (ZDSYS20180208184346531) Guangdong province program (2016LJ06N507), Shenzhen Basic Research Fund (CYJ20170817110652558). S/TEM images and the EDS were obtained using the Titan Themis G2 and FEI Talos F200 maintained by Southern University of Science and Technology Core Research Facilities. Publisher Copyright: © 2023 Elsevier B.V.

PY - 2023/10/1

Y1 - 2023/10/1

N2 - The well-known shuttle effect of lithium polysulfides (LiPSs) in the ether-based liquid electrolyte and polymer solid electrolytes are the main roadblocks of Li-S batteries to perform high discharge capacity with a long cycling lifespan. Herein, a triple phase interface among carbon/catalysts (vanadium single atoms (VSAs) and metallic cobalt nanoparticles (CoNPs))/electrolyte is proposed for the high-performance Li-S batteries. At the triple-phase interfaces, the LiPSs are chemically immobilized and electrocatalytically transformed into insoluble Li2S at the rate-determining process of liquid–solid conversion. The nucleation and growth of Li2S precipitates were dominated by the interface chemistry and the dispersion of catalysts (3D reconstruction image). In the Li-S batteries with liquid ether-based electrolytes, a discharge capacity of 1343 mAh g−1 was achieved at 0.1 C and the decay of capacity was decelerated with 0.05% per cycle for 500 cycles at 1 C, as well as superb rate capability (808 mAh·g−1 at 5 C). The triple phase interfaces also exhibited high performance in solid state Li-S batteries with solid polymer electrolytes, which the discharge capacity reaches 1289 mAh·g−1 at 0.05 C and 849 mAh·g−1 at 0.5 C.

AB - The well-known shuttle effect of lithium polysulfides (LiPSs) in the ether-based liquid electrolyte and polymer solid electrolytes are the main roadblocks of Li-S batteries to perform high discharge capacity with a long cycling lifespan. Herein, a triple phase interface among carbon/catalysts (vanadium single atoms (VSAs) and metallic cobalt nanoparticles (CoNPs))/electrolyte is proposed for the high-performance Li-S batteries. At the triple-phase interfaces, the LiPSs are chemically immobilized and electrocatalytically transformed into insoluble Li2S at the rate-determining process of liquid–solid conversion. The nucleation and growth of Li2S precipitates were dominated by the interface chemistry and the dispersion of catalysts (3D reconstruction image). In the Li-S batteries with liquid ether-based electrolytes, a discharge capacity of 1343 mAh g−1 was achieved at 0.1 C and the decay of capacity was decelerated with 0.05% per cycle for 500 cycles at 1 C, as well as superb rate capability (808 mAh·g−1 at 5 C). The triple phase interfaces also exhibited high performance in solid state Li-S batteries with solid polymer electrolytes, which the discharge capacity reaches 1289 mAh·g−1 at 0.05 C and 849 mAh·g−1 at 0.5 C.

KW - Catalysts

KW - Cobalt nanoparticles

KW - Li-S batteries

KW - Solid state batteries

KW - Vanadium single atoms

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SN - 1385-8947

VL - 473

JO - Chemical Engineering Journal

JF - Chemical Engineering Journal

M1 - 144887

ER -

Engineering conductive and catalytic triple-phase interfaces for high efficiency polysulfides conversion in Li-S batteries

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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