Through inverted-design rather than modifying the generally-assumed S active sites in popular MoS_(2),we unlock the potential of Mo sites and successfully prepared novel MoS_(2)@Ni_(3)S_(2)/NF core-shell nanospheres a...Through inverted-design rather than modifying the generally-assumed S active sites in popular MoS_(2),we unlock the potential of Mo sites and successfully prepared novel MoS_(2)@Ni_(3)S_(2)/NF core-shell nanospheres as a catalyst for the high-performance hydrogen evolution reaction(HER).TheΔGH at the Mo site is optimized via Ni_(3)S_(2)to achieve excellent HER activity.At low current densities,it has similar activity to the Pt/C.However,its performance is better than Pt/C at high density.Moreover,our catalyst shows a considerable stability at a variety of current densities for 50 h,promising to substitute noble metal catalysts in application of commercial alkaline electrocatalysts.展开更多
The oriented two-dimensional porous nitrogen-doped carbon embedded with CoS_(2) and MoS2 nanosheets is a highly efcient bifunctional electrocatalyst.The hierarchical structure ensures fast mass transfer capacity in im...The oriented two-dimensional porous nitrogen-doped carbon embedded with CoS_(2) and MoS2 nanosheets is a highly efcient bifunctional electrocatalyst.The hierarchical structure ensures fast mass transfer capacity in improving the electrocatalytic activity.And the greatly increased specifc surface area is benefcial to expose more electrocatalytically active atoms.For oxygen evolution reaction(OER)and hydrogen evolution reaction(HER)tests in 1 mol/L KOH solution,only 194 and 140 mV overpotential are required to achieve a current density of 10 mA/cm^(2),respectively.Our research provides an efective strategy for synergizing the individual components in nanostructures for a wide range of electrocatalytic reactions.展开更多
基金supported by the National Natural Science Foundation of China(grant Nos.51872115,52101256)the Project funded by China Postdoctoral Science Foundation(grant No.2020M680043)+1 种基金Science and Technology Research Project of the Department of Educationof JilinProvince(grant No.JKH20211083KJ)2020 INTERNATIONAL COOPERATION Project of the Department of Science and Technology of Jjilin Province(grant No.20200801001GH).
文摘Through inverted-design rather than modifying the generally-assumed S active sites in popular MoS_(2),we unlock the potential of Mo sites and successfully prepared novel MoS_(2)@Ni_(3)S_(2)/NF core-shell nanospheres as a catalyst for the high-performance hydrogen evolution reaction(HER).TheΔGH at the Mo site is optimized via Ni_(3)S_(2)to achieve excellent HER activity.At low current densities,it has similar activity to the Pt/C.However,its performance is better than Pt/C at high density.Moreover,our catalyst shows a considerable stability at a variety of current densities for 50 h,promising to substitute noble metal catalysts in application of commercial alkaline electrocatalysts.
基金supported by the National Natural Science Foundation of China(Grant Nos.51872115 and 52101256)the Open Project Program of Wuhan National Laboratory for Optoelectronics(No.2018WNLOKF022)+3 种基金the 2020 International Cooperation Project of the Department of Science and Technology of Jilin Province(No.20200801001GH)Science and Technology Research Project of the Department of Education of Jilin Province(No.JJKH20211083KJ)the Project funded by China Postdoctoral Science Foundation(No.2020M680043)the Project supported by State Key Laboratory of Luminescence and Applications(No.KLA-2020-05)。
文摘The oriented two-dimensional porous nitrogen-doped carbon embedded with CoS_(2) and MoS2 nanosheets is a highly efcient bifunctional electrocatalyst.The hierarchical structure ensures fast mass transfer capacity in improving the electrocatalytic activity.And the greatly increased specifc surface area is benefcial to expose more electrocatalytically active atoms.For oxygen evolution reaction(OER)and hydrogen evolution reaction(HER)tests in 1 mol/L KOH solution,only 194 and 140 mV overpotential are required to achieve a current density of 10 mA/cm^(2),respectively.Our research provides an efective strategy for synergizing the individual components in nanostructures for a wide range of electrocatalytic reactions.
