期刊
NANOSCALE
卷 9, 期 17, 页码 5467-5474出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7nr01727h
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资金
- Collaborative Innovation Center of Suzhou Nano Science and Technology
- National Natural Science Foundation of China [51422207, 51572179, 21471106, 21501126]
- Natural Science Foundation of Jiangsu Province [BK20161216]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
Highly efficient electrocatalysts remain huge challenges in direct methanol fuel cells (DMFCs). Here, a PtCo3O4-CDs/C composite was fabricated as an anode electrocatalyst with low Pt content (12 wt%) by using carbon dots (CDs) and Co3O4 nanoparticles as building blocks. The Pt-Co3O4-CDs/C composite catalyst shows a significantly enhanced electrocatalytic activity (1393.3 mA mg(-1) Pt), durability (over 4000 s) and CO-poisoning tolerance. The superior catalytic activity should be attributed to the synergistic effect of CDs, Pt and Co3O4. Furthermore, the Pt-Co3O4-CDs/C catalyst was integrated into a single cell, which exhibits a maximum power density of 45.6 mW cm(-2), 1.7 times the cell based on the commercial 20 wt% Pt/C catalyst.
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