Oxygen Vacancies on Layered Niobic Acid That Weaken the Catalytic Conversion of Polysulfides in Lithium–Sulfur Batteries

Lingling Xu; Hongyang Zhao; Mingzi Sun; Bolong Huang; Jianwei Wang; Jiale Xia; Na Li; Dandan Yin; Meng Luo; Feng Luo; Yaping Du; Chunhua Yan

doi:10.1002/anie.201905852

Oxygen Vacancies on Layered Niobic Acid That Weaken the Catalytic Conversion of Polysulfides in Lithium–Sulfur Batteries

Lingling Xu, Hongyang Zhao, Mingzi Sun, Bolong Huang, Jianwei Wang, Jiale Xia, Na Li, Dandan Yin, Meng Luo, Feng Luo, Yaping Du, Chunhua Yan

Research output: Journal article publication › Review article › Academic research › peer-review

105 Citations (Scopus)

Abstract

Oxygen vacancies are usually considered to be beneficial in catalytic conversion of polysulfides in lithium–sulfur batteries. Now it is demonstrated that the conversion of polysulfides was hindered by oxygen vacancies on ultrathin niobic acid. The inferior performance induced by the oxygen vacancy was mainly attributed to the decreased electric conductivity as well as the weakened adsorption of polysulfides on the catalyst surface. This work shows that the care should be taken when designing a new catalyst for the lithium–sulfur battery using a defect-engineering strategy.

Original language	English
Pages (from-to)	11491-11496
Number of pages	6
Journal	Angewandte Chemie - International Edition
Volume	58
Issue number	33
DOIs	https://doi.org/10.1002/anie.201905852
Publication status	Published - 12 Aug 2019

Keywords

catalytic conversion
electrochemistry
Li-S batteries
niobic acid
oxygen vacancies

ASJC Scopus subject areas

Catalysis
General Chemistry

More information

10.1002/anie.201905852

http://hdl.handle.net/10397/95296

Cite this

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title = "Oxygen Vacancies on Layered Niobic Acid That Weaken the Catalytic Conversion of Polysulfides in Lithium–Sulfur Batteries",

abstract = "Oxygen vacancies are usually considered to be beneficial in catalytic conversion of polysulfides in lithium–sulfur batteries. Now it is demonstrated that the conversion of polysulfides was hindered by oxygen vacancies on ultrathin niobic acid. The inferior performance induced by the oxygen vacancy was mainly attributed to the decreased electric conductivity as well as the weakened adsorption of polysulfides on the catalyst surface. This work shows that the care should be taken when designing a new catalyst for the lithium–sulfur battery using a defect-engineering strategy.",

keywords = "catalytic conversion, electrochemistry, Li-S batteries, niobic acid, oxygen vacancies",

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AU - Xu, Lingling

AU - Zhao, Hongyang

AU - Sun, Mingzi

AU - Huang, Bolong

AU - Wang, Jianwei

AU - Xia, Jiale

AU - Li, Na

AU - Yin, Dandan

AU - Luo, Meng

AU - Luo, Feng

AU - Du, Yaping

AU - Yan, Chunhua

PY - 2019/8/12

Y1 - 2019/8/12

N2 - Oxygen vacancies are usually considered to be beneficial in catalytic conversion of polysulfides in lithium–sulfur batteries. Now it is demonstrated that the conversion of polysulfides was hindered by oxygen vacancies on ultrathin niobic acid. The inferior performance induced by the oxygen vacancy was mainly attributed to the decreased electric conductivity as well as the weakened adsorption of polysulfides on the catalyst surface. This work shows that the care should be taken when designing a new catalyst for the lithium–sulfur battery using a defect-engineering strategy.

AB - Oxygen vacancies are usually considered to be beneficial in catalytic conversion of polysulfides in lithium–sulfur batteries. Now it is demonstrated that the conversion of polysulfides was hindered by oxygen vacancies on ultrathin niobic acid. The inferior performance induced by the oxygen vacancy was mainly attributed to the decreased electric conductivity as well as the weakened adsorption of polysulfides on the catalyst surface. This work shows that the care should be taken when designing a new catalyst for the lithium–sulfur battery using a defect-engineering strategy.

KW - catalytic conversion

KW - electrochemistry

KW - Li-S batteries

KW - niobic acid

KW - oxygen vacancies

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U2 - 10.1002/anie.201905852

DO - 10.1002/anie.201905852

M3 - Review article

C2 - 31206953

AN - SCOPUS:85068889704

SN - 1433-7851

VL - 58

SP - 11491

EP - 11496

JO - Angewandte Chemie - International Edition

JF - Angewandte Chemie - International Edition

IS - 33

ER -

Oxygen Vacancies on Layered Niobic Acid That Weaken the Catalytic Conversion of Polysulfides in Lithium–Sulfur Batteries

Abstract

Keywords

ASJC Scopus subject areas

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