期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 45, 期 11, 页码 6318-6327出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2019.12.101
关键词
Co; N-doped carbon nanocages; Ball milling; Hard template; Oxygen reduction reaction; Hydrogen fuel cells
资金
- National Natural Science Foundation of China [21603084]
- Natural Science Foundation of Shandong Province [ZR2018PB011]
- Shandong Province Higher Educational Science and Technology Program [J17KA096, J18KA076]
- Key Research and Development Program of Shandong Province [2017GGX20137]
- Doctor Startup Fund of lining University [2016BSZX03]
A facile and scalable method is developed for the high-efficiency synthesis of Co, N-doped carbon nanocages catalyst for the oxygen reduction reaction (ORR). During the synthesis, the precursors are uniformly distributed on the surface of potassium chloride (KCl) by high-energy ball milling. As evidenced, the N and Co elements are successfully doped and distributed uniformly on the surface of carbon nanocages. Owing to the distinctive nanocage architecture and the synergistic effects of Co, N and Co-N-x coordination, the obtained Co, N-CNC-800 shows efficient ORR catalytic activity with an onset potential of 0.924 V (vs. RHE), and the number of electron transfer (n) is approximately 3.4. Furthermore, its stability and methanol tolerance are far superior to those of commercial 40% Pt/C. This simple and universal synthesis strategy is expected to be widely applied in the preparation of other heteroatom-doped carbon nanocages as catalysts in hydrogen fuel cells. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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