Ye Lu

Zhejiang Center for Disease Control and Prevention

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Kai Huang

Beijing University of Posts and Telecommunications

R. Zhang

Northwestern Polytechnical University

Wenjuan Wang

Shanghai Institute of Technical Physics

Y. G. Wang

State Key Laboratory of Information Photonics and Optical Communications

Ke Bi

Beijing University of Posts and Telecommunications

Haolin Tang

Wuhan University of Technology

Jingxin Liu

Union Hospital

Ming Lei

Beijing University of Posts and Telecommunications

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Beijing University of Posts and Telecommunications

East China University of Science and Technology

State Key Laboratory of Information Photonics and Optical Communications

Kunming Medical University

Southeast University

Chung Yuan Christian University

State Key Laboratory of New Ceramics and Fine Processing

Tsinghua University

Beijing Microelectronics Technology Institute

Changshu Institute of Technology

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Porous VOxNy nanoribbons supported on CNTs as efficient and stable non-noble electrocatalysts for the oxygen reduction reaction

Scientific Reports (2015)

Kai Huang Ke Bi Ye Lu R. Zhang Jingxin Liu

Abstract Novel nanocomposites of carbon nanotubes supported porous VO x N y nonoribbons (VO x N y -CNTs) have been synthesized by the annealing of the sol-gel mixture of CNTs and V 2 O 5 under NH 3 atmosphere as well as the ageing process in air. Besides the morphological and structural characterizations revealed by TEM, SEAD, EDS, XRD and XPS measurements, typical electrochemical tests including cyclic voltammetry (CV), rotating disk electrode (RDE) and chronoamperometry have been employed to determine the oxygen reduction reaction (ORR) performance of VO x N y -CNTs. Inspiringly, the results indicate that VO x N y -CNTs catalyst exhibits a 0.4 mA/cm 2 larger diffusion-limited current density, a 0.10 V smaller onset potential value, a 10.73% less of ORR current decay and an excellent methanol-tolerance compared with commercial Pt/C catalyst. Therefore, we have reasonable grounds to believe that this new VO x N y -CNTs nanocomposites can be regarded as a promising non-precious methanol-tolerant ORR catalyst candidate for alkaline fuel cells.

Noble metal

10.1038/srep17385

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