摘要
In the pursuit of sustainable energy solutions,the efficiency of the hydrogen evolution reaction(HER)in alkaline conditions has been a significant challenge,primarily due to the sluggish dissociation of water molecules on platinum(Pt)catalysts.Addressing this critical issue,our study introduces an innovative Pt-Co@NCS catalyst.This catalyst synergistically combines Pt nanoparticles with Co single atoms on a nitrogen-doped carbon scaffold,overcoming the traditional bottleneck of slow water dissociation.Its unique porous concave structure and nitrogen-enriched surface not only provide abundant anchoring sites for Co atoms but also create a conducive hydrophilic environment around the Pt particles.This design leads to a drastic improvement in the water dissociation process,as demonstrated by CO stripping and deuterium labeling experiments.Achieving an outstanding current density of 162.8 mA cm^(−2) at−0.1 V versus RHE,a Tafel slope of 26.2 mV dec^(−1),and a superior nominal mass activity of 15.75 mAμgPt^(−1),the Pt-Co@NCS catalyst represents a significant step forward in enhancing alkaline HER efficiency,indicating promising advancements in the field.
基金
support from the National Natural Science Foundation of China(22379120,22350410375)
the University Development Fund,Research Start-up Fund(UDF01002976)from the Chinese University of Hong Kong(Shenzhen)
the Higher Education Institution Academic Discipline Innovation and Talent Introduction Plan(111 Plan)(No.B23025)
the Shenzhen Science and Technology Program(JCYJ20230807114302005)
the China Postdoctoral Science Foundation(2020M673408)。
