Journal
MATERIALS LETTERS
Volume 244, Issue -, Pages 78-82Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2019.01.144
Keywords
Post-grinding process; Nanocomposites; Porous materials; Synergistic effect; Bi-functional catalysts
Funding
- Program for Fund of State Key Laboratory of Information Photonics and Optical Communications (Beijing University of Posts and Telecommunications, China)
- Key Laboratory of Silicon Device Technology, Chinese Academy of Sciences
- National Natural Science Foundation of China [61874014, 61874013, 51572032, 61674019, 61574020, 51472221, 51472033, 51472196]
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A nanocomposite with mesoporous Co3O4 loaded on nitrogen-doped mesoporous carbon (Co3O4@NMC) has been constructed by a facile post-grinding process. The electro-catalytic experimental results show that Co3O4@NMC (1:3) can be regarded as the low-cost alternative ORR/OER bi-functional catalyst compared with commercial noble Pt/C + IrO2 catalysts. The potential difference (Delta E) between between E-1/2 and E-j10 for Co3O4@NMC (1:3) sample is only 21 mV larger. Moreover, we observed no obvious degeneration in both ORR and OER activity during ADT tests. The enhancement of electro-catalytic activity can be attributed to the effective charge transfer process as suggested by the Tafel analysis due to the synergistic effect. (C) 2019 Elsevier B.V. All rights reserved.
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