Observation of a robust and active catalyst for hydrogen evolution under high current densities

• DOI: 10.1038/s41467-022-35464-2
• Publication Date: 2022-12-16T11:03:43Z
• Authors: Yudi Zhang; Kathryn E. Arpino; Qun Yang; Naoki Kikugawa; Dmitry A. Sokolov; Clifford W. Hicks; Jian Liu; Claudia Felser; Guowei Li
• Keywords: Crystal (programming language)

Despite the fruitful achievements in development of hydrogen production catalysts with record-breaking performances, there is still a lack durable that could work under large current densities (>1000 mA cm-2). Here, we investigated catalytic behaviors Sr2RuO4 bulk single crystals. This crystal has demonstrated remarkable activities density 1000 cm-2, which require overpotentials 182 and 278 mV 0.5 M H2SO4 1 KOH electrolytes, respectively. These materials are stable for 56 days continuous testing at high above cm-2 then operating temperatures 70 °C. The in-situ formation ferromagnetic Ru clusters surface observed, endowing single-crystal catalyst low charge transfer resistance wettability rapid gas bubble removal. experiments exemplify potential designing HER industrial-scale density.