Alkali-water electrolyzers and hydroxide exchange membrane fuel cells are emerging as promising technologies to realize hydrogen economy.Developing cost-effective electrode materials with high activities towards corre...Alkali-water electrolyzers and hydroxide exchange membrane fuel cells are emerging as promising technologies to realize hydrogen economy.Developing cost-effective electrode materials with high activities towards corresponding hydrogen evolution(HER)and oxidation(HOR)reactions plays a crucial role in commercial hydrogen production and utilization.Herein,we fabricated a V-doped Ni_(3)N/Ni heterostructure(V-Ni_(3)N/Ni)through a controlled nitridation treatment on a V-incorporated nickel hydroxide precursor.The resultant catalyst exhibits comparable catalytic activity and durability to commercial Pt/C in terms of both HER(a low overpotential of 44 mV at the current density of 10 mA·cm^(-2))and HOR(a high current density of 1.54 mA·cm^(-2)at 0.1 V versus reversible hydrogen electrode)under alkaline conditions.The superior activity of V-Ni_(3)N/Ni grown on different substrates further implies its intrinsic performance.Density functional theory(DFT)calculations reveal that the coupled metallic Ni and doped V can promote the water adsorption,accelerate the Volmer step of alkaline HER,as well as optimize the adsorption and desorption of hydrogen intermediate(H^(*))to reach a balancedΔGH*value.展开更多
Erratum to Nano Research 2021,14(10):3489–3496 https://doi.org/10.1007/s12274-021-3559-9 In Acknowledgements,one of the foundation numbers of Tianjin Municipal Science and Technology Commission(No.18TCQNJC71500)was u...Erratum to Nano Research 2021,14(10):3489–3496 https://doi.org/10.1007/s12274-021-3559-9 In Acknowledgements,one of the foundation numbers of Tianjin Municipal Science and Technology Commission(No.18TCQNJC71500)was unfortunately mistakenly used.展开更多
基金This work was supported by the National Key R&D Program of China(No.2017YFA0700104)the National Natural Science Foundation of China(NSFC,Nos.21701124 and 21911530255)+1 种基金Tianjin Municipal Science and Technology Commission(Nos.18TCQNJC71500 and 17JCZDJC38000)State Key Laboratory of Inorganic Synthesis and Preparative Chemistry(2019-6).
文摘Alkali-water electrolyzers and hydroxide exchange membrane fuel cells are emerging as promising technologies to realize hydrogen economy.Developing cost-effective electrode materials with high activities towards corresponding hydrogen evolution(HER)and oxidation(HOR)reactions plays a crucial role in commercial hydrogen production and utilization.Herein,we fabricated a V-doped Ni_(3)N/Ni heterostructure(V-Ni_(3)N/Ni)through a controlled nitridation treatment on a V-incorporated nickel hydroxide precursor.The resultant catalyst exhibits comparable catalytic activity and durability to commercial Pt/C in terms of both HER(a low overpotential of 44 mV at the current density of 10 mA·cm^(-2))and HOR(a high current density of 1.54 mA·cm^(-2)at 0.1 V versus reversible hydrogen electrode)under alkaline conditions.The superior activity of V-Ni_(3)N/Ni grown on different substrates further implies its intrinsic performance.Density functional theory(DFT)calculations reveal that the coupled metallic Ni and doped V can promote the water adsorption,accelerate the Volmer step of alkaline HER,as well as optimize the adsorption and desorption of hydrogen intermediate(H^(*))to reach a balancedΔGH*value.
基金the National Key R&D Program of China(No.2017YFA0700104)the National Natural Science Foundation of China(NSFC,Nos.21701124 and 21911530255)+1 种基金Tianjin Municipal Science and Technology Commission(Nos.18JCQNJC71500 and 17JCZDJC38000)State Key Laboratory of Inorganic Synthesis and Preparative Chemistry(2019-6).
文摘Erratum to Nano Research 2021,14(10):3489–3496 https://doi.org/10.1007/s12274-021-3559-9 In Acknowledgements,one of the foundation numbers of Tianjin Municipal Science and Technology Commission(No.18TCQNJC71500)was unfortunately mistakenly used.