期刊
BEILSTEIN JOURNAL OF NANOTECHNOLOGY
卷 11, 期 -, 页码 770-781出版社
BEILSTEIN-INSTITUT
DOI: 10.3762/bjnano.11.62
关键词
covalent triazine framework (CTF); electrocatalysis; nickel nanoparticles; oxygen evolution reaction; oxygen reduction reaction
资金
- joint DFG-NSFC project [DFG JA466/39-1, 51861135313]
- NSFC [51861135313]
Covalent triazine frameworks (CTFs) are little investigated, albeit they are promising candidates for electrocatalysis, especially for the oxygen evolution reaction (OER). In this work, nickel nanoparticles (from Ni(COD)(2)) were supported on CTF-1 materials, which were synthesized from 1,4-dicyanobenzene at 400 degrees C and 600 degrees C by the ionothermal method. CTF-1-600 and Ni/CTF-1-600 show high catalytic activity towards OER and a clear activity for the electrochemical oxygen reduction reaction (ORR). Ni/CTF-1-600 requires 374 mV overpotential in OER to reach 10 mA/cm(2), which outperforms the benchmark RuO2 catalyst, which requires 403 mV under the same conditions. Ni/CTF-1-600 displays an OER catalytic activity comparable with many nickel-based electro-catalysts and is a potential candidate for OER. The same Ni/CTF-1-600 material shows a half-wave potential of 0.775 V for ORR, which is slightly lower than that of commercial Pt/C (0.890 V). Additionally, after accelerated durability tests of 2000 cycles, the material showed only a slight decrease in activity towards both OER and ORR, demonstrating its superior stability.
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