MnCo2S4‐CoS1.097 Heterostructure Nanotubes as High Efficiency Cathode Catalysts for Stable and Long‐Life Lithium‐Oxygen Batteries Under High Current Conditions

Abstract Constructing the heterostructures is considered to be one of the most effective methods to improve the poor electrical conductivity and insufficient electrocatalytic properties of metal sulfide catalysts. In this work, MnCo2S4‐CoS1.097 nanotubes are successfully prepared via a reflux‐ hydro...

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Autores principales: Qing Xia, Lanling Zhao, Zhijia Zhang, Jun Wang, Deyuan Li, Xue Han, Zhaorui Zhou, Yuxin Long, Feng Dang, Yiming Zhang, Shulei Chou
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Publicado: Wiley 2021
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spelling oai:doaj.org-article:daf815477d134724b1f5f898d540255c2021-11-17T08:40:32ZMnCo2S4‐CoS1.097 Heterostructure Nanotubes as High Efficiency Cathode Catalysts for Stable and Long‐Life Lithium‐Oxygen Batteries Under High Current Conditions2198-384410.1002/advs.202103302https://doaj.org/article/daf815477d134724b1f5f898d540255c2021-11-01T00:00:00Zhttps://doi.org/10.1002/advs.202103302https://doaj.org/toc/2198-3844Abstract Constructing the heterostructures is considered to be one of the most effective methods to improve the poor electrical conductivity and insufficient electrocatalytic properties of metal sulfide catalysts. In this work, MnCo2S4‐CoS1.097 nanotubes are successfully prepared via a reflux‐ hydrothermal process. This novel cathode catalyst delivers high discharge/charge specific capacities of 21 765/21 746 mAh g−1 at 200 mA g−1 and good rate capability. In addition, a favorable cycling stability with a fixed specific capacity of 1000 mAh g−1 at high current density of 1000 mA g−1 (167 cycles) and 2000 mA g−1 (57 cycles) are delivered. It is proposed that fast transmission of ions and electrons accelerated by the built‐in electric field, multiple active sites from the heterostructure, and nanotube architecture with large specific surface area are responsible for the superior electrochemical performance. To some extent, the rational design of this heterostructured metal sulfide catalyst provides guidance for the development of the stable and efficient cathode catalysts for Li‐O2 batteries that can be employed under high current conditions.Qing XiaLanling ZhaoZhijia ZhangJun WangDeyuan LiXue HanZhaorui ZhouYuxin LongFeng DangYiming ZhangShulei ChouWileyarticlecathode catalystselectrocatalysisheterostructureLi‐O2 batteriesMnCo2S4‐CoS1.097ScienceQENAdvanced Science, Vol 8, Iss 22, Pp n/a-n/a (2021)
institution DOAJ
collection DOAJ
language EN
topic cathode catalysts
electrocatalysis
heterostructure
Li‐O2 batteries
MnCo2S4‐CoS1.097
Science
Q
spellingShingle cathode catalysts
electrocatalysis
heterostructure
Li‐O2 batteries
MnCo2S4‐CoS1.097
Science
Q
Qing Xia
Lanling Zhao
Zhijia Zhang
Jun Wang
Deyuan Li
Xue Han
Zhaorui Zhou
Yuxin Long
Feng Dang
Yiming Zhang
Shulei Chou
MnCo2S4‐CoS1.097 Heterostructure Nanotubes as High Efficiency Cathode Catalysts for Stable and Long‐Life Lithium‐Oxygen Batteries Under High Current Conditions
description Abstract Constructing the heterostructures is considered to be one of the most effective methods to improve the poor electrical conductivity and insufficient electrocatalytic properties of metal sulfide catalysts. In this work, MnCo2S4‐CoS1.097 nanotubes are successfully prepared via a reflux‐ hydrothermal process. This novel cathode catalyst delivers high discharge/charge specific capacities of 21 765/21 746 mAh g−1 at 200 mA g−1 and good rate capability. In addition, a favorable cycling stability with a fixed specific capacity of 1000 mAh g−1 at high current density of 1000 mA g−1 (167 cycles) and 2000 mA g−1 (57 cycles) are delivered. It is proposed that fast transmission of ions and electrons accelerated by the built‐in electric field, multiple active sites from the heterostructure, and nanotube architecture with large specific surface area are responsible for the superior electrochemical performance. To some extent, the rational design of this heterostructured metal sulfide catalyst provides guidance for the development of the stable and efficient cathode catalysts for Li‐O2 batteries that can be employed under high current conditions.
format article
author Qing Xia
Lanling Zhao
Zhijia Zhang
Jun Wang
Deyuan Li
Xue Han
Zhaorui Zhou
Yuxin Long
Feng Dang
Yiming Zhang
Shulei Chou
author_facet Qing Xia
Lanling Zhao
Zhijia Zhang
Jun Wang
Deyuan Li
Xue Han
Zhaorui Zhou
Yuxin Long
Feng Dang
Yiming Zhang
Shulei Chou
author_sort Qing Xia
title MnCo2S4‐CoS1.097 Heterostructure Nanotubes as High Efficiency Cathode Catalysts for Stable and Long‐Life Lithium‐Oxygen Batteries Under High Current Conditions
title_short MnCo2S4‐CoS1.097 Heterostructure Nanotubes as High Efficiency Cathode Catalysts for Stable and Long‐Life Lithium‐Oxygen Batteries Under High Current Conditions
title_full MnCo2S4‐CoS1.097 Heterostructure Nanotubes as High Efficiency Cathode Catalysts for Stable and Long‐Life Lithium‐Oxygen Batteries Under High Current Conditions
title_fullStr MnCo2S4‐CoS1.097 Heterostructure Nanotubes as High Efficiency Cathode Catalysts for Stable and Long‐Life Lithium‐Oxygen Batteries Under High Current Conditions
title_full_unstemmed MnCo2S4‐CoS1.097 Heterostructure Nanotubes as High Efficiency Cathode Catalysts for Stable and Long‐Life Lithium‐Oxygen Batteries Under High Current Conditions
title_sort mnco2s4‐cos1.097 heterostructure nanotubes as high efficiency cathode catalysts for stable and long‐life lithium‐oxygen batteries under high current conditions
publisher Wiley
publishDate 2021
url https://doaj.org/article/daf815477d134724b1f5f898d540255c
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