Three-Dimensionally Ordered Macro/Mesoporous Nb<sub>2</sub>O<sub>5</sub>/Nb<sub>4</sub>N<sub>5</sub> Heterostructure as Sulfur Host for High-Performance Lithium/Sulfur Batteries

Three-Dimensionally Ordered Macro/Mesoporous Nb<sub>2</sub>O<sub>5</sub>/Nb<sub>4</sub>N<sub>5</sub> Heterostructure as Sulfur Host for High-Performance Lithium/Sulfur Batteries

The severe shuttle effect of soluble polysulfides hinders the development of lithium–sulfur batteries. Herein, we develop a three-dimensionally ordered macro/mesoporous (3DOM) Nb<sub>2</sub>O<sub>5</sub>/Nb<sub>4</sub>N<sub>5</sub> heterostructure, whi...

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Main Authors: Haoxian Chen, Jiayi Wang, Yan Zhao, Qindan Zeng, Guofu Zhou, Mingliang Jin
Format: Article
Language:English
Published: MDPI AG 2021-06-01
Series:Nanomaterials
Subjects:
Nb<sub>2</sub>O<sub>5</sub>
Nb<sub>4</sub>N<sub>5</sub>
heterostructure
lithium-sulfur batteries
Online Access:https://www.mdpi.com/2079-4991/11/6/1531
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spelling doaj-bb4941c4e7c548129c6d36ec671d48332021-06-30T23:47:25ZengMDPI AGNanomaterials2079-49912021-06-01111531153110.3390/nano11061531Three-Dimensionally Ordered Macro/Mesoporous Nb<sub>2</sub>O<sub>5</sub>/Nb<sub>4</sub>N<sub>5</sub> Heterostructure as Sulfur Host for High-Performance Lithium/Sulfur BatteriesHaoxian Chen0Jiayi Wang1Yan Zhao2Qindan Zeng3Guofu Zhou4Mingliang Jin5National Center for International Research on Green Optoelectronics, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, ChinaSchool of Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou 510006, ChinaSchool of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, ChinaNational Center for International Research on Green Optoelectronics, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, ChinaNational Center for International Research on Green Optoelectronics, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, ChinaNational Center for International Research on Green Optoelectronics, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, ChinaThe severe shuttle effect of soluble polysulfides hinders the development of lithium–sulfur batteries. Herein, we develop a three-dimensionally ordered macro/mesoporous (3DOM) Nb<sub>2</sub>O<sub>5</sub>/Nb<sub>4</sub>N<sub>5</sub> heterostructure, which combines the strong adsorption of Nb<sub>2</sub>O<sub>5</sub> and remarkable catalysis effect of Nb<sub>4</sub>N<sub>5</sub> by the promotion “adsorption-transformation” mechanism in sulfur reaction. Furthermore, the high electrocatalytic activity of Nb<sub>4</sub>N<sub>5</sub> facilitates ion/mass transfer during the charge/discharge process. As a result, cells with the S-Nb<sub>2</sub>O<sub>5</sub>/Nb<sub>4</sub>N<sub>5</sub> electrode delivered outstanding cycling stability and higher discharge capacity than its counterparts. Our work demonstrates a new routine for the multifunctional sulfur host design, which offers great potential for commercial high-performance lithium–sulfur batteries.https://www.mdpi.com/2079-4991/11/6/1531Nb<sub>2</sub>O<sub>5</sub>Nb<sub>4</sub>N<sub>5</sub>heterostructurelithium-sulfur batteries
collection DOAJ
language English
format Article
sources DOAJ
author Haoxian Chen
Jiayi Wang
Yan Zhao
Qindan Zeng
Guofu Zhou
Mingliang Jin
spellingShingle Haoxian Chen
Jiayi Wang
Yan Zhao
Qindan Zeng
Guofu Zhou
Mingliang Jin
Three-Dimensionally Ordered Macro/Mesoporous Nb<sub>2</sub>O<sub>5</sub>/Nb<sub>4</sub>N<sub>5</sub> Heterostructure as Sulfur Host for High-Performance Lithium/Sulfur Batteries
Nanomaterials
Nb<sub>2</sub>O<sub>5</sub>
Nb<sub>4</sub>N<sub>5</sub>
heterostructure
lithium-sulfur batteries
author_facet Haoxian Chen
Jiayi Wang
Yan Zhao
Qindan Zeng
Guofu Zhou
Mingliang Jin
author_sort Haoxian Chen
title Three-Dimensionally Ordered Macro/Mesoporous Nb<sub>2</sub>O<sub>5</sub>/Nb<sub>4</sub>N<sub>5</sub> Heterostructure as Sulfur Host for High-Performance Lithium/Sulfur Batteries
title_short Three-Dimensionally Ordered Macro/Mesoporous Nb<sub>2</sub>O<sub>5</sub>/Nb<sub>4</sub>N<sub>5</sub> Heterostructure as Sulfur Host for High-Performance Lithium/Sulfur Batteries
title_full Three-Dimensionally Ordered Macro/Mesoporous Nb<sub>2</sub>O<sub>5</sub>/Nb<sub>4</sub>N<sub>5</sub> Heterostructure as Sulfur Host for High-Performance Lithium/Sulfur Batteries
title_fullStr Three-Dimensionally Ordered Macro/Mesoporous Nb<sub>2</sub>O<sub>5</sub>/Nb<sub>4</sub>N<sub>5</sub> Heterostructure as Sulfur Host for High-Performance Lithium/Sulfur Batteries
title_full_unstemmed Three-Dimensionally Ordered Macro/Mesoporous Nb<sub>2</sub>O<sub>5</sub>/Nb<sub>4</sub>N<sub>5</sub> Heterostructure as Sulfur Host for High-Performance Lithium/Sulfur Batteries
title_sort three-dimensionally ordered macro/mesoporous nb<sub>2</sub>o<sub>5</sub>/nb<sub>4</sub>n<sub>5</sub> heterostructure as sulfur host for high-performance lithium/sulfur batteries
publisher MDPI AG
series Nanomaterials
issn 2079-4991
publishDate 2021-06-01
description The severe shuttle effect of soluble polysulfides hinders the development of lithium–sulfur batteries. Herein, we develop a three-dimensionally ordered macro/mesoporous (3DOM) Nb<sub>2</sub>O<sub>5</sub>/Nb<sub>4</sub>N<sub>5</sub> heterostructure, which combines the strong adsorption of Nb<sub>2</sub>O<sub>5</sub> and remarkable catalysis effect of Nb<sub>4</sub>N<sub>5</sub> by the promotion “adsorption-transformation” mechanism in sulfur reaction. Furthermore, the high electrocatalytic activity of Nb<sub>4</sub>N<sub>5</sub> facilitates ion/mass transfer during the charge/discharge process. As a result, cells with the S-Nb<sub>2</sub>O<sub>5</sub>/Nb<sub>4</sub>N<sub>5</sub> electrode delivered outstanding cycling stability and higher discharge capacity than its counterparts. Our work demonstrates a new routine for the multifunctional sulfur host design, which offers great potential for commercial high-performance lithium–sulfur batteries.
topic Nb<sub>2</sub>O<sub>5</sub>
Nb<sub>4</sub>N<sub>5</sub>
heterostructure
lithium-sulfur batteries
url https://www.mdpi.com/2079-4991/11/6/1531
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