摘要：High-temperature proton exchange membrane fuel cells(HT-PEMFCs)bring new opportunities for portable power generation due to their outstanding advantages such as high tolerance to fuel/air impurities and simplified heat/water ***,carbon-supported nanostructured Pt-based catalysts running at temperatures over 150℃are challenged by the severe aggregation and carbon corrosion,thus leading to poor ***,we demonstrate that dendritic Pt-Ni nanoparticles supported on fluorinated carbon black(white carbon black)could significantly enhance the performance and durability of HT-PEMFCs as the cathode catalysts running at 160℃due to the strong interaction of the F and Ni atoms to form a Ni_(x)F_(y) interface on Pt-Ni *** the formation of a stable Ni_(x)F_(y) interface,this integrated HT-PEMFC reached peak power densities of 906 mW cm^(−2) and demonstrated excellent durability at 160℃ under anhydrous H_(2)/O_(2) *** mitigation strategy was applied to Pt-alloy/C electrocatalysts and resulted in the elimination of Pt dissolution in practical fuel cells.

摘要：为了应对风光大规模并网带来的调峰困难,由此进行计及不确定性与相关性的虚拟电厂参与主辅市场联合交易优化研究。首先,设计虚拟电厂参与主辅市场的交易体系;然后,考虑新能源出力的不确定性以及主电能量市场与调峰辅助服务市场价格的相关性,构建了虚拟电厂参与主辅市场的联合出清优化模型;最后,以某一虚拟电厂为例进行算例分析,算例结果验证了模型的有效性。

摘要：建设项目环境影响评价文件分级审批是我国环境影响评价制度的重要组成部分,在明确审批权责、提高审批效率、提高服务意识、优化营商环境等方面发挥了十分重要的作用,但也暴露出一些问题。本文在梳理我国建设项目环境影响评价分级审批存在主要问题的基础上,有针对性地给出相关解决对策和思路,以期为我国环境影响评价制度的进一步完善贡献力量。