The ground state properties of 0 isotopes are investigated by the Skyrme-Hartree-Fock(SHF)approach plus density-dependent pairing correlations.In comparison with the results of SHF calculationsusing the constant-gap a...The ground state properties of 0 isotopes are investigated by the Skyrme-Hartree-Fock(SHF)approach plus density-dependent pairing correlations.In comparison with the results of SHF calculationsusing the constant-gap approach,our calculations using the density-dependent pairing correlations providea good description of the O isotopes.Detailed comparison and analysis are given.展开更多
The application of nickel in electrocatalytic reduction of CO2 has been largely restricted by side reaction (hydrogen evolution reaction) and catalyst poisoning.Here we report a new strategy to improve the electrocata...The application of nickel in electrocatalytic reduction of CO2 has been largely restricted by side reaction (hydrogen evolution reaction) and catalyst poisoning.Here we report a new strategy to improve the electrocatalytic performance of nickel for CO2 reduction by employing a nitrogen-carbon layer for nickel nanoparticles.Such a nickel electrocatalyst exhibits high Faradaic efficiency 97.5% at relatively low potential of-0.61 V for the conversion of CO2 to CO.Density functional theory calculation reveals that it is thermodynamically accomplishable for the reduction product CO to be removed from the catalyst surface,thus avoiding catalyst poisoning.Also,the catalyst renders hydrogen evolution reaction to be suppressed and hence reasonably improves catalytic performance.展开更多
文摘The ground state properties of 0 isotopes are investigated by the Skyrme-Hartree-Fock(SHF)approach plus density-dependent pairing correlations.In comparison with the results of SHF calculationsusing the constant-gap approach,our calculations using the density-dependent pairing correlations providea good description of the O isotopes.Detailed comparison and analysis are given.
基金the National Natural Science Foundation of China (Nos.21525316,21802146,and 21673254)Ministry of Science and Technology of China (No.2017YFA0403003)+1 种基金Chinese Academy of Sciences (No.QYZDY-SSW-SLH013)Beijing Municipal Science & Technology Commission (No.Z181100004218004).
文摘The application of nickel in electrocatalytic reduction of CO2 has been largely restricted by side reaction (hydrogen evolution reaction) and catalyst poisoning.Here we report a new strategy to improve the electrocatalytic performance of nickel for CO2 reduction by employing a nitrogen-carbon layer for nickel nanoparticles.Such a nickel electrocatalyst exhibits high Faradaic efficiency 97.5% at relatively low potential of-0.61 V for the conversion of CO2 to CO.Density functional theory calculation reveals that it is thermodynamically accomplishable for the reduction product CO to be removed from the catalyst surface,thus avoiding catalyst poisoning.Also,the catalyst renders hydrogen evolution reaction to be suppressed and hence reasonably improves catalytic performance.
