超薄有机分子层修饰Ni（OH)2负载缺电子Ru促进H*脱附实现高效碱性析氢

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中图分类号：TK02 文献标志码：A

Abstract：Throughacoordination-drivenself-assemblystrategyof ultrathintannicacid（TA）layerandRuions，theelectronic structure （ Ni（OH）2 -TA-Ru）rich in2nmRu nanoparticles on the surface of nickel hydroxide was optimized.Electrochemicalevaluations，structuralcharacterizations，anddensityfunctional theory（DFT）calculations wereutilizedtossess thehydrogen evolutionreaction（HER）activity，long-termoperation stability，andelectronic structurecharacteristicsof Ru active sites.It is found that Ni（OH）2 -TA-Ru only requires 53and 70mV overpotentials at 100mA/cm2 in1 M KOHand alkaline seawater （ 1MKOH+ seawater），respectively，which are 51.7% and 36.2% lower than that of Pt/C/NF （109.7 mV ）．Chronopotentiometric tests are stable for 100h and 72h ，respectively.The TA ultrathin layer modified Ni （OH）2 （20 support induces the formation of electron-deficient Ru species，downshifting the Ru d-band center by 0.35eV .This electronic restructuring weakens Ru-H bond strength，accelerates the desorption of hydrogen intermediates （H* ），and promotes the Heyrovsky rate-determining step and enhancing alkaline HER kinetics.

Keywords：organic molecular modification；electronic interaction；Ru nanoparticle；hydrogen evolution reaction

碳中和日标的推进止在加速全球从化石燃料问清洁能源的过渡，其中氢气（ H2 ）因其高能量密度和环保特性，成为备受关注的可再生能源替代品[1-3]。（剩余18079字）