The large-scale synthesis of efficient nonprecious bifunctional electrocatalysts for overall water splitting is a great challenge for future renewable energy conversion systems. Herein, Ni2P nanosheet arrays directly ...The large-scale synthesis of efficient nonprecious bifunctional electrocatalysts for overall water splitting is a great challenge for future renewable energy conversion systems. Herein, Ni2P nanosheet arrays directly grown on three-dimensional(3 D) Ni foam(Ni P/NF) are fabricated by hydrothermal treatment of metallic Ni foam with H2O2solution and subsequent phosphidation with NaH2PO2. The Ni P/NF as electrocatalyst exhibits superior activities for both hydrogen evolution reaction(HER) and oxygen evolution reaction(OER). Most importantly, employing both as the cathode and anode for an alkaline water electrolyzer, Ni P/NF only requires a cell voltage of 1.63 V to reach a current density of 10 mV cm-2, together with stronger durability. Preliminary catalytic information suggests that the tailored 3 D superstructure and integrated electrode configurations afford improved active sties and enhanced electron/mass transfer,responding for the outstanding activity and stability.展开更多
With the full-speed development of economy,the new urbanization has been accelerated in Guizhou Province in order to make the people reach a well-off standard of living by 2020. From the whole society,the key point is...With the full-speed development of economy,the new urbanization has been accelerated in Guizhou Province in order to make the people reach a well-off standard of living by 2020. From the whole society,the key point is the development of the rural economy,and the development of the rural economy depends on the economic development of rural households. The income from rural labor force transfer has become the main income source and accounts for more than half of rural household income,which will play a major role in survival and development of rural households.展开更多
Village-level economy is not only the important foundation for promoting grass-roots agricultural and rural modernization, but also an essential guarantee for sustainable development of small scale economy of rural fa...Village-level economy is not only the important foundation for promoting grass-roots agricultural and rural modernization, but also an essential guarantee for sustainable development of small scale economy of rural farmer households. Research on this field will play a significant role in rural economic development of Guizhou Province. Taking the observation data from 1999 to 2009 in 10 fixed observation villages in Guizhou Province, we carried out empirical survey and analysis on land scale and use structure, scale and composition of fixed assets for production, level and composition of operational income, and level and composition of financial revenue and expenditure at village level. Finally, we put forward conclusions and recommendations.展开更多
基金supported by the National Natural Science Foundation of China(21421001,21573115)the Natural Science Foundation of Tianjin(17JCYBJC17100)
文摘The large-scale synthesis of efficient nonprecious bifunctional electrocatalysts for overall water splitting is a great challenge for future renewable energy conversion systems. Herein, Ni2P nanosheet arrays directly grown on three-dimensional(3 D) Ni foam(Ni P/NF) are fabricated by hydrothermal treatment of metallic Ni foam with H2O2solution and subsequent phosphidation with NaH2PO2. The Ni P/NF as electrocatalyst exhibits superior activities for both hydrogen evolution reaction(HER) and oxygen evolution reaction(OER). Most importantly, employing both as the cathode and anode for an alkaline water electrolyzer, Ni P/NF only requires a cell voltage of 1.63 V to reach a current density of 10 mV cm-2, together with stronger durability. Preliminary catalytic information suggests that the tailored 3 D superstructure and integrated electrode configurations afford improved active sties and enhanced electron/mass transfer,responding for the outstanding activity and stability.
基金supported by the National Natural Science Foundation of China (No. 21076056 and 20973096)the National Basic Research Program of China (No. 2009CB623502)the Program for Changjiang Scholars and Innovative Research Team in University (IRT0927)
基金Supported by Research Project of Guizhou Provincial Agriculture Commission in 2013
文摘With the full-speed development of economy,the new urbanization has been accelerated in Guizhou Province in order to make the people reach a well-off standard of living by 2020. From the whole society,the key point is the development of the rural economy,and the development of the rural economy depends on the economic development of rural households. The income from rural labor force transfer has become the main income source and accounts for more than half of rural household income,which will play a major role in survival and development of rural households.
基金Supported by Research Project of Agricultural Committee of Guizhou Province
文摘Village-level economy is not only the important foundation for promoting grass-roots agricultural and rural modernization, but also an essential guarantee for sustainable development of small scale economy of rural farmer households. Research on this field will play a significant role in rural economic development of Guizhou Province. Taking the observation data from 1999 to 2009 in 10 fixed observation villages in Guizhou Province, we carried out empirical survey and analysis on land scale and use structure, scale and composition of fixed assets for production, level and composition of operational income, and level and composition of financial revenue and expenditure at village level. Finally, we put forward conclusions and recommendations.
