期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 6, 期 28, 页码 13859-13866出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8ta03249a
关键词
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资金
- Recruitment Program of Global Young Experts of China and Sichuan one thousand Talents Plan
- National Natural Science Foundation of China [51672007, 51502007]
- 2011 Program Peking-Tsinghua-IOP Collaborative Innovation Center of Quantum Matter
- National Key Research and Development Program of China [2018YFA0306100]
Developing highly efficient, durable, and low-cost catalysts for the hydrogen evolution reaction (HER) is an eternal pursuit for scientists to replace Pt-based catalysts. The fundamental ways to boost the performance of electrocatalysts are improving the intrinsic activity of each active site and increasing the number of exposed active sites. Herein, we report a novel approach to synthesize ultrafine Ru nanocluster catalysts embedded in a nitrogen-doped carbon framework. To illustrate this strategy, Ru atoms are immobilized in tetra-aminephthalocyanine (RuPc-NH2) by Ru-N-4 bonds and subsequently confined by graphene oxide (GO) nanosheets in space. After pyrolysis treatment, ultrafine Ru nanoclusters (average size 1.03 +/- 0.23 nm) stabilized by an N-doped carbon framework with a 23.7 wt% Ru content (Ru@NG) are prepared. Importantly, Ru@NG shows excellent HER performance with small overpotentials (20.3 mV in 1.0 M KOH and 42.7 mV in 0.5 M H2SO4) at 10 mA cm(-2), a high active site number (3.54 x 10(-3) mol g(-1)) and robust durability both in alkaline and acidic environments. Therefore, this work provides a promising substitute for expensive Pt-based catalysts.
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