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RETRACTED ARTICLE: Self-assembly of N doped 3D porous carbon frameworks from carbon quantum dots and its application for oxygen reduction reaction

Authors
  • Chen, Chao1
  • Sun, Zexu2
  • Li, Yueping3
  • Yi, Liyuan4
  • Hu, Haoming5
  • 1 Sichuan University of Science & Engineering, Zigong, 643000, China , Zigong (China)
  • 2 Central South University, Changsha, 410083, China , Changsha (China)
  • 3 Primary School of Jiantangpin, Yiyang, 413412, China , Yiyang (China)
  • 4 The Seventh High School of TaoJiang, Yiyang, 413400, China , Yiyang (China)
  • 5 Primary School of Niutian, Yiyang, 413412, China , Yiyang (China)
Type
Published Article
Journal
Journal of Materials Science Materials in Electronics
Publisher
Springer-Verlag
Publication Date
May 18, 2017
Volume
28
Issue
17
Pages
12660–12669
Identifiers
DOI: 10.1007/s10854-017-7091-3
Source
Springer Nature
Keywords
License
Yellow

Abstract

Developing low-cost and high-performance metal-free oxygen reduction reaction (ORR) catalysts for fuel cells is highly desirable but still full of challenges. In this study, Nitrogen-doped three-dimensional (3D) porous carbon frameworks (NCF) derived from zero-dimensional carbon quantum dots have been prepared by a simple one-step self-assembly technique. The resultant NCF-800 (carbonized at 800 °C) possesses unique 3D porous framework architecture, large specific surface area (171 cm2 g−1) and abundant defect sites. As a catalyst for ORR, the optimized NCF-800 displays a positive onset potential at 0.87 V (vs. RHE), which is roughly 60 mV more negative than that of Pt/C (0.93 V). Additionally, the NCF-800 exhibits longer-term stability and strong endurance to methanol in alkaline electrolyte, which are much superior to those of Pt/C. Considering the outstanding activity of NCF-800, it can be worked as a prospective metal-free ORR catalyst for fuel cells in the future.

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