The hydrogen storage behavior of So-decorated WS2 monolayer and WS2 nanoribbons is systematically studied by using first principles calculations based on the density functional theory. The present results indicate tha...The hydrogen storage behavior of So-decorated WS2 monolayer and WS2 nanoribbons is systematically studied by using first principles calculations based on the density functional theory. The present results indicate that an Sedecorated WS2 monolayer is not suitable for storing hydrogen due to the weak interaction between the monolayer WS2 sheet and the Sc atoms. It is found that both the hybridization meeh^nism and the Coulomb attraction make the Sc atoms stably adsorb on the edges of WS2 nanoribbons without clustering. The 2Sc/WS2NRs system can adsorb at most eight H.2 molecules with average adsorption energy of 0.20 eV/H2. The results show that the desorption of H2 is possible by lowering the pressure or by increasing the temperature.展开更多
The German Aerospace Center has merged a wide range of technological research and development for future cars in a project called ＂Next Generation Car＂. Within this large research project, three vehicle concepts for...The German Aerospace Center has merged a wide range of technological research and development for future cars in a project called ＂Next Generation Car＂. Within this large research project, three vehicle concepts for different applications （urban, regional and interurban） and with different powertrains （fuel-cell, battery and hybrid） will be developed. Research questions on different levels from conceptual question about vehicle modularity down to detailed technological aspects like combining hydrogen storage with cabin climatization and a systematic investigation of different thermal energy storage systems for electric vehicles concepts are covered by this project. To the latter, the contribution shows an overview about three thermal storage technologies--sensible solid media, metallic latent and thermochemical thermal energy storage systems--and details about the development of an electrically heated （power-to-heat） solid media storage system to achieve high storage densities and to allow flexible thermal discharging values. Central works target the identification of suitable thermal management solutions in future electric vehicle concepts to increase range, efficiency and flexibility.展开更多
基金Supported by the National Natural Science Foundation of China under Grant No 11404112the Research in Cutting-Edge Technologies of Zhengzhou under Grant No 141PRKXF622the Foundation of Henan Educational Committee under Grant No14B140020
文摘The hydrogen storage behavior of So-decorated WS2 monolayer and WS2 nanoribbons is systematically studied by using first principles calculations based on the density functional theory. The present results indicate that an Sedecorated WS2 monolayer is not suitable for storing hydrogen due to the weak interaction between the monolayer WS2 sheet and the Sc atoms. It is found that both the hybridization meeh^nism and the Coulomb attraction make the Sc atoms stably adsorb on the edges of WS2 nanoribbons without clustering. The 2Sc/WS2NRs system can adsorb at most eight H.2 molecules with average adsorption energy of 0.20 eV/H2. The results show that the desorption of H2 is possible by lowering the pressure or by increasing the temperature.
文摘The German Aerospace Center has merged a wide range of technological research and development for future cars in a project called ＂Next Generation Car＂. Within this large research project, three vehicle concepts for different applications （urban, regional and interurban） and with different powertrains （fuel-cell, battery and hybrid） will be developed. Research questions on different levels from conceptual question about vehicle modularity down to detailed technological aspects like combining hydrogen storage with cabin climatization and a systematic investigation of different thermal energy storage systems for electric vehicles concepts are covered by this project. To the latter, the contribution shows an overview about three thermal storage technologies--sensible solid media, metallic latent and thermochemical thermal energy storage systems--and details about the development of an electrically heated （power-to-heat） solid media storage system to achieve high storage densities and to allow flexible thermal discharging values. Central works target the identification of suitable thermal management solutions in future electric vehicle concepts to increase range, efficiency and flexibility.
