摘要：Starch has a wide range of sources and can be used as a high-quality precursor for sodium-ion battery anode ***,the carbonization yield and specific capacity of carbon materials obtained by directly pyrolyzing starch are ***,starch is used as the carbon source,and ammonium polyphosphate(APP)is used as the cross-linking agent and dopant to prepare a nitrogen and phosphorus co-doped porous carbon(NPPC).As the anode for sodium-ion batteries,NPPC-2 exhibits a high reversible capacity of 385.8 mAhg^(-1)at 50 mAg^(-1).Even after 1000 cycles at a large current density of 5 Ag^(-1),the reversible capacity can still be maintained at 126.9 mAhg^(-1).Based on detailed data and first-principles calculations,the excellent performance of NPPC is due to the effective doping of nitrogen and phosphorus elements,which distorts the graphite sheet,introduces defects,and increases the graphite layer spacing,thereby enhancing the adsorption capacity of the carbon material for sodium ions,reducing the diffusion barrier of sodium *** work provides a new idea for heteroatom doping and carbon material modification.

摘要：在化学工业高速发展的背景下,如何培养面向多学科交叉融合的高素质人才,已成为教学改革的重要议题。本文以“化工过程优化设计”课程的教学改革为研究对象,首先分析了化学工业的发展与学科间的交叉融合现状,进而从定位教学目标、教学内容更新、创新教学方式、改革教学评价体系、建设高素质的教师队伍几方面对课程的教学改革进行了讨论。课程教学改革的成效表明,该项研究对人才培养、多学科交叉融合课程建设具有一定的参考价值。

摘要：本文以中山大道夜景照明提升工程为例,针对历史文化街区建筑物的特殊性,从其夜景照明规划、设计、实施过程中的难点和节能控制等方面进行探讨,总结出历史街区建筑夜景照明的设计方法和实施要素,以为同类设计提供参考。