Design of N-graphene-NbOx hybrid nanosheets with sandwich-like structure and electrocatalytic performance towards oxygen reduction reaction

Q. Wu; L. Liao; Q. Zhang; Y. Nie; J. Xiao; S. Wang; S. Dai; Q. Gao; Y. Zhang; X. Sun; B. Liu; Y. Tang

doi:10.1016/j.electacta.2015.01.115

Design of N-graphene-NbO_x hybrid nanosheets with sandwich-like structure and electrocatalytic performance towards oxygen reduction reaction

Q. Wu, L. Liao, Q. Zhang, Y. Nie, J. Xiao, S. Wang, S. Dai, Q. Gao, Y. Zhang, X. Sun, B. Liu, Y. Tang

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

6 Scopus citations

Abstract

Advanced materials for electrocatalytic oxygen reduction reaction (ORR) is crucial to a number of renewable energy applications. Herein, a hybrid of nitrogen-doped graphene (N-graphene) and NbO_x (x = 2∼2.5) semiconductor nanosheets with sandwich-like structure has been designed and synthesized via a strategy of intercalation-in situ carbonization. The obtained multilayer hybrid material exhibits quite positive onset potential of ORR, good stability and excellent selectivity for ORR with high methanol tolerance. The enhanced performance could be attributed to the active oxygen vacancy from the partial reduction of Nb (V) during the carbonization process and the synergetic coupling effect resulting from the molecular level contact of N-graphene and NbO_x (x = 2∼2.5) nanosheets, which makes it a promising substitute of platinum-based materials for renewable energy applications.

Original language	English
Pages (from-to)	42-48
Number of pages	7
Journal	Electrochimica Acta
Volume	158
DOIs	https://doi.org/10.1016/j.electacta.2015.01.115
State	Published - Mar 10 2015
Externally published	Yes

Funding

This work is supported by the 973 program ( 2013CB934101 ), Natural Science Foundation of China ( 21073041 , 21203075 , 21373102 , 21433002 ), and Science and Technology Commission of Shanghai Municipality ( 11JC1400400 ).

Funders	Funder number
National Natural Science Foundation of China	21373102, 21203075, 21073041, 21433002
Science and Technology Commission of Shanghai Municipality	11JC1400400
National Key Research and Development Program of China	2013CB934101

Keywords

ORR
electrocatalytic
hybrid
oxygen vacancy
synergetic effect

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.electacta.2015.01.115

Cite this

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title = "Design of N-graphene-NbOx hybrid nanosheets with sandwich-like structure and electrocatalytic performance towards oxygen reduction reaction",

abstract = "Advanced materials for electrocatalytic oxygen reduction reaction (ORR) is crucial to a number of renewable energy applications. Herein, a hybrid of nitrogen-doped graphene (N-graphene) and NbOx (x = 2∼2.5) semiconductor nanosheets with sandwich-like structure has been designed and synthesized via a strategy of intercalation-in situ carbonization. The obtained multilayer hybrid material exhibits quite positive onset potential of ORR, good stability and excellent selectivity for ORR with high methanol tolerance. The enhanced performance could be attributed to the active oxygen vacancy from the partial reduction of Nb (V) during the carbonization process and the synergetic coupling effect resulting from the molecular level contact of N-graphene and NbOx (x = 2∼2.5) nanosheets, which makes it a promising substitute of platinum-based materials for renewable energy applications.",

keywords = "ORR, electrocatalytic, hybrid, oxygen vacancy, synergetic effect",

author = "Q. Wu and L. Liao and Q. Zhang and Y. Nie and J. Xiao and S. Wang and S. Dai and Q. Gao and Y. Zhang and X. Sun and B. Liu and Y. Tang",

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T1 - Design of N-graphene-NbOx hybrid nanosheets with sandwich-like structure and electrocatalytic performance towards oxygen reduction reaction

AU - Wu, Q.

AU - Liao, L.

AU - Zhang, Q.

AU - Nie, Y.

AU - Xiao, J.

AU - Wang, S.

AU - Dai, S.

AU - Gao, Q.

AU - Zhang, Y.

AU - Sun, X.

AU - Liu, B.

AU - Tang, Y.

PY - 2015/3/10

Y1 - 2015/3/10

N2 - Advanced materials for electrocatalytic oxygen reduction reaction (ORR) is crucial to a number of renewable energy applications. Herein, a hybrid of nitrogen-doped graphene (N-graphene) and NbOx (x = 2∼2.5) semiconductor nanosheets with sandwich-like structure has been designed and synthesized via a strategy of intercalation-in situ carbonization. The obtained multilayer hybrid material exhibits quite positive onset potential of ORR, good stability and excellent selectivity for ORR with high methanol tolerance. The enhanced performance could be attributed to the active oxygen vacancy from the partial reduction of Nb (V) during the carbonization process and the synergetic coupling effect resulting from the molecular level contact of N-graphene and NbOx (x = 2∼2.5) nanosheets, which makes it a promising substitute of platinum-based materials for renewable energy applications.

AB - Advanced materials for electrocatalytic oxygen reduction reaction (ORR) is crucial to a number of renewable energy applications. Herein, a hybrid of nitrogen-doped graphene (N-graphene) and NbOx (x = 2∼2.5) semiconductor nanosheets with sandwich-like structure has been designed and synthesized via a strategy of intercalation-in situ carbonization. The obtained multilayer hybrid material exhibits quite positive onset potential of ORR, good stability and excellent selectivity for ORR with high methanol tolerance. The enhanced performance could be attributed to the active oxygen vacancy from the partial reduction of Nb (V) during the carbonization process and the synergetic coupling effect resulting from the molecular level contact of N-graphene and NbOx (x = 2∼2.5) nanosheets, which makes it a promising substitute of platinum-based materials for renewable energy applications.

KW - ORR

KW - electrocatalytic

KW - hybrid

KW - oxygen vacancy

KW - synergetic effect

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