Journal
SCIENCE ADVANCES
Volume 6, Issue 44, Pages -Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/sciadv.abb4197
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Funding
- National Natural Science Foundation of China [21601174]
- Recruitment Program of Global Experts
- Fundamental Research Funds for the Central Universities [WK2060190081]
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Replacing the sluggish anode reaction in water electrolysis with thermodynamically favorable hydrazine oxidation could achieve energy-efficient H-2 production, while the shortage of bifunctional catalysts limits its scale development. Here, we presented the scalable one-pot synthesis of partially exposed RuP2 nanoparticle-decorated carbon porous microsheets, which can act as the superior bifunctional catalyst outperforming Pt/C for both hydrazine oxidation reaction and hydrogen evolution reaction, where an ultralow working potential of -70 mV and an ultrasmall overpotential of 24 mV for 10 mA cm(-2) can be achieved. The two-electrode electrolyzer can reach 10 mA cm(-2) with a record-low cell voltage of 23 mV and an ultrahigh current density of 522 mA cm(-2) at 1.0 V. The DFT calculations unravel the notability of partial exposure in the hybrid structure, as the exposed Ru atoms are the active sites for hydrazine dehydrogenation, while the C atoms exhibit a more thermoneutral value for H* adsorption.
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