Boosting Oxygen Reduction Performance of Manganese Oxide in Alkaline Media by Three-Dimensional Highly Ordered Conductive Porous Framework
MnO2 has been widely used as an alternative candidate for oxygen reduction reaction owing to its abundance, low cost, and environmental compatibility. However, bulk MnO2 as electrocatalysts is still suffering from serious active sites agglomeration and poor conductivity, resulting in low utilization...
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doaj-92829125d693432a91e326f2fed106352020-11-24T21:50:46ZengFrontiers Media S.A.Frontiers in Materials2296-80162019-09-01610.3389/fmats.2019.00219484487Boosting Oxygen Reduction Performance of Manganese Oxide in Alkaline Media by Three-Dimensional Highly Ordered Conductive Porous FrameworkXiaofen Xiao0Xiaofen Xiao1Zhengsong Fang2Dingshan Yu3Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Key Laboratory of High Performance Polymer-Based Composites of Guangdong Province, School of Chemistry, Sun Yat-sen University, Guangzhou, ChinaCollaborative Innovation Center for Intelligent New Energy Vehicle School of Automotive Studies, Tongji University, Shanghai, ChinaKey Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Key Laboratory of High Performance Polymer-Based Composites of Guangdong Province, School of Chemistry, Sun Yat-sen University, Guangzhou, ChinaKey Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Key Laboratory of High Performance Polymer-Based Composites of Guangdong Province, School of Chemistry, Sun Yat-sen University, Guangzhou, ChinaMnO2 has been widely used as an alternative candidate for oxygen reduction reaction owing to its abundance, low cost, and environmental compatibility. However, bulk MnO2 as electrocatalysts is still suffering from serious active sites agglomeration and poor conductivity, resulting in low utilization of catalysts and sluggish reaction kinetics. In view of this, we fabricated a 3D highly ordered porous MnO2@Ni-pc nanocomposite and significantly enhance ORR performance of MnO2 with high onset potential of 1.04 V and half-wave potential of 0.89 V as well as a large limiting current density of 4.07 mA cm−2, being even comparable to the commercial Pt/C. This nano-engineering technique is suitable for various catalysts that can be attached onto the 3D highly ordered porous framework, which provides new opportunities in designing electrode structures to boost the performance of bulk materials.https://www.frontiersin.org/article/10.3389/fmats.2019.00219/fullmanganese oxideelectrocatalystoxygen reduction reactionnanocomposite3D ordered porous scaffold |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Xiaofen Xiao Xiaofen Xiao Zhengsong Fang Dingshan Yu |
spellingShingle |
Xiaofen Xiao Xiaofen Xiao Zhengsong Fang Dingshan Yu Boosting Oxygen Reduction Performance of Manganese Oxide in Alkaline Media by Three-Dimensional Highly Ordered Conductive Porous Framework Frontiers in Materials manganese oxide electrocatalyst oxygen reduction reaction nanocomposite 3D ordered porous scaffold |
author_facet |
Xiaofen Xiao Xiaofen Xiao Zhengsong Fang Dingshan Yu |
author_sort |
Xiaofen Xiao |
title |
Boosting Oxygen Reduction Performance of Manganese Oxide in Alkaline Media by Three-Dimensional Highly Ordered Conductive Porous Framework |
title_short |
Boosting Oxygen Reduction Performance of Manganese Oxide in Alkaline Media by Three-Dimensional Highly Ordered Conductive Porous Framework |
title_full |
Boosting Oxygen Reduction Performance of Manganese Oxide in Alkaline Media by Three-Dimensional Highly Ordered Conductive Porous Framework |
title_fullStr |
Boosting Oxygen Reduction Performance of Manganese Oxide in Alkaline Media by Three-Dimensional Highly Ordered Conductive Porous Framework |
title_full_unstemmed |
Boosting Oxygen Reduction Performance of Manganese Oxide in Alkaline Media by Three-Dimensional Highly Ordered Conductive Porous Framework |
title_sort |
boosting oxygen reduction performance of manganese oxide in alkaline media by three-dimensional highly ordered conductive porous framework |
publisher |
Frontiers Media S.A. |
series |
Frontiers in Materials |
issn |
2296-8016 |
publishDate |
2019-09-01 |
description |
MnO2 has been widely used as an alternative candidate for oxygen reduction reaction owing to its abundance, low cost, and environmental compatibility. However, bulk MnO2 as electrocatalysts is still suffering from serious active sites agglomeration and poor conductivity, resulting in low utilization of catalysts and sluggish reaction kinetics. In view of this, we fabricated a 3D highly ordered porous MnO2@Ni-pc nanocomposite and significantly enhance ORR performance of MnO2 with high onset potential of 1.04 V and half-wave potential of 0.89 V as well as a large limiting current density of 4.07 mA cm−2, being even comparable to the commercial Pt/C. This nano-engineering technique is suitable for various catalysts that can be attached onto the 3D highly ordered porous framework, which provides new opportunities in designing electrode structures to boost the performance of bulk materials. |
topic |
manganese oxide electrocatalyst oxygen reduction reaction nanocomposite 3D ordered porous scaffold |
url |
https://www.frontiersin.org/article/10.3389/fmats.2019.00219/full |
work_keys_str_mv |
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