This paper is based on the partnership between China’s higher vocational colleges and industry, and obtains a large number of data on industry-college partnerships through case analysis, interviews and questionnaires...This paper is based on the partnership between China’s higher vocational colleges and industry, and obtains a large number of data on industry-college partnerships through case analysis, interviews and questionnaires. This paper analyzes the main factors that affect industry-college partnerships and the current problems and challenges, then puts forward the solutions.展开更多
The curriculum“Woven Fabric Structure Design and Application”is the core curriculum of textile majors in higher vocational colleges,which plays a very important role in the cultivation of students’vocational abilit...The curriculum“Woven Fabric Structure Design and Application”is the core curriculum of textile majors in higher vocational colleges,which plays a very important role in the cultivation of students’vocational ability and professional quality.The curriculum reform of“Woven Fabric Structure Design and Application”through the deep cooperation of industry-college partnerships,the comprehensive analysis of the major training objectives and graduation requirements,the redesign of the curriculum teaching content,the improvement of the teaching method and the examination method,has achieved good results.展开更多
Molybdenum disulfide/carbon nanotubes assembled by ultrathin nanosheets are synthesized to illustrate the electrolyte salt chemistry via potassium bis-(fluorosulfonyl)imide(KFSI)versus potassium hexafluorophosphate(KP...Molybdenum disulfide/carbon nanotubes assembled by ultrathin nanosheets are synthesized to illustrate the electrolyte salt chemistry via potassium bis-(fluorosulfonyl)imide(KFSI)versus potassium hexafluorophosphate(KPF6).Compared to the case of KPF6,the electrochemical performances using KFSI as the electrolyte salt are greatly improved:~275 mAh g^(−1) after 15,000 cycles at 1 A g^(−1),or~172 mAh g^(−1) even at 40 A g^(−1).These results represent one of the best performances for the reported anode materials.The enhanced performances could be attributed to the FSI-induced changes in the solvate structures,that is,a large solvation energy,a high lowest unoccupied mole cular orbital,and a small bonding dissociation energy of S-F.In this case,a uniform and robust solid-electrolyte interphase(SEI)is produced,improving the mechanical properties and the interface integrity.Then,the uncontrollable fracture and repeated growth of SEI,which always lead to the dissolution of sulfur species and the blockage of charge transfer in the case of KPF6,are well inhibited.This similar enhancement works for other sulfides by KFSI,demonstrating the general importance of this electrolyte salt chemistry.展开更多
We present a facile synthetic strategy to create mesoporous Cu_(2)O nanocrystals with tunable pore structures and surface functional groups of amine derivatives for efficient and preferable electrochemical conversion ...We present a facile synthetic strategy to create mesoporous Cu_(2)O nanocrystals with tunable pore structures and surface functional groups of amine derivatives for efficient and preferable electrochemical conversion of CO_(2) into ethylene.The structural characteristics of theseCu_(2)O nanocrystals can be manipulated using a set of amine derivatives,such as pyridine,4,4'-bipyridine,and hexamethylenetetramine,during the oxidative etching process of Cu nanocrystals by bubbling gaseous oxygen in N,N-dimethylformamide solution.These amine derivatives not only serve as surface functional groups but also significantly affect the resulting pore structures.The synergistic effect of pore structure confinement and surface amine functionalization leads to the superb Faradaic efficiency(FE)of 51.9% for C_(2)H_(4),respectively,together with the C_(2)H_(4) partial current density of -209.4 mA·cm^(-2) at -0.8 V vs.reversible hydrogen electrode(RHE).The relatively high selectivity towards C_(2)H_(4) was investigated using DFT simulations,where 4,4'-bipyridine functionalized Cu_(2)O seemed to favor the C_(2)H_(4) formation with the low free energy of the intermediates.This study provides a feasible strategy to manipulate the pore structure and surface functionalization of mesoporous Cu_(2)O nanocrystals by regulating the oxidative etching process,which sheds light on the rational preparation of high-performance CO_(2)RR electrocatalysts.展开更多
Layer-structured MoS_(2)is regarded as a promising anode material for potassium ion batteries.Herein,MoS_(2)nanosheets on N,P-codoping reduced graphene oxide(MoS_(2)/N,P-rGO)have been successfully prepared via a facil...Layer-structured MoS_(2)is regarded as a promising anode material for potassium ion batteries.Herein,MoS_(2)nanosheets on N,P-codoping reduced graphene oxide(MoS_(2)/N,P-rGO)have been successfully prepared via a facile two-step synthesis,where few-layered MoS_(2)nanosheets are chemically bonded onto the surface of N,P-rGO.As an anode material,MoS_(2)/N,P-rGO exhibits a high specific capacity(462.7 mAh·g^(-1)at 100 mA·g^(-1)over 200 cycles),outstanding rate capability(224.9 mAh·g^(-1)at 20 A·g^(-1)),and excellent cycle life(236.6 mAh·g^(-1)at 2 A·g^(-1)after 7,000 cycles),much better than those of MoS_(2)and MoS_(2)/rGO.These advanced performances outperform most of the reported anode materials for potassium ion batteries to date.Meanwhile,the K-storage reactions of MoS_(2)/N,P-rGO have been disclosed through in-situ and ex-situ characterizations.The kinetics analysis confirms that K-storage of MoS_(2)/N,P-rGO is predominant by pseudo-capacitance.展开更多
文摘This paper is based on the partnership between China’s higher vocational colleges and industry, and obtains a large number of data on industry-college partnerships through case analysis, interviews and questionnaires. This paper analyzes the main factors that affect industry-college partnerships and the current problems and challenges, then puts forward the solutions.
文摘The curriculum“Woven Fabric Structure Design and Application”is the core curriculum of textile majors in higher vocational colleges,which plays a very important role in the cultivation of students’vocational ability and professional quality.The curriculum reform of“Woven Fabric Structure Design and Application”through the deep cooperation of industry-college partnerships,the comprehensive analysis of the major training objectives and graduation requirements,the redesign of the curriculum teaching content,the improvement of the teaching method and the examination method,has achieved good results.
基金support of the Science,Technology,and Innovation Commission of Shenzhen Municipality(JCYJ20180305000927)the Natural Science Fundamental Research Funds of Shandong University(2018JC023)the Shandong Provincial Natural Science Foundation(ZR2020MB048),and the National Nature Science Foundation of China(No.21971146).
文摘Molybdenum disulfide/carbon nanotubes assembled by ultrathin nanosheets are synthesized to illustrate the electrolyte salt chemistry via potassium bis-(fluorosulfonyl)imide(KFSI)versus potassium hexafluorophosphate(KPF6).Compared to the case of KPF6,the electrochemical performances using KFSI as the electrolyte salt are greatly improved:~275 mAh g^(−1) after 15,000 cycles at 1 A g^(−1),or~172 mAh g^(−1) even at 40 A g^(−1).These results represent one of the best performances for the reported anode materials.The enhanced performances could be attributed to the FSI-induced changes in the solvate structures,that is,a large solvation energy,a high lowest unoccupied mole cular orbital,and a small bonding dissociation energy of S-F.In this case,a uniform and robust solid-electrolyte interphase(SEI)is produced,improving the mechanical properties and the interface integrity.Then,the uncontrollable fracture and repeated growth of SEI,which always lead to the dissolution of sulfur species and the blockage of charge transfer in the case of KPF6,are well inhibited.This similar enhancement works for other sulfides by KFSI,demonstrating the general importance of this electrolyte salt chemistry.
基金financially supported by Shandong Provincial Natural Science Foundation(No.ZR2022MB120&ZR2020MB048)the University Feature Laboratory for Energy Conversion and Nanocatalysis of Shandong ProvinceHundred Outstanding Talent Program of Jining University(No.2020ZYRC05).
文摘We present a facile synthetic strategy to create mesoporous Cu_(2)O nanocrystals with tunable pore structures and surface functional groups of amine derivatives for efficient and preferable electrochemical conversion of CO_(2) into ethylene.The structural characteristics of theseCu_(2)O nanocrystals can be manipulated using a set of amine derivatives,such as pyridine,4,4'-bipyridine,and hexamethylenetetramine,during the oxidative etching process of Cu nanocrystals by bubbling gaseous oxygen in N,N-dimethylformamide solution.These amine derivatives not only serve as surface functional groups but also significantly affect the resulting pore structures.The synergistic effect of pore structure confinement and surface amine functionalization leads to the superb Faradaic efficiency(FE)of 51.9% for C_(2)H_(4),respectively,together with the C_(2)H_(4) partial current density of -209.4 mA·cm^(-2) at -0.8 V vs.reversible hydrogen electrode(RHE).The relatively high selectivity towards C_(2)H_(4) was investigated using DFT simulations,where 4,4'-bipyridine functionalized Cu_(2)O seemed to favor the C_(2)H_(4) formation with the low free energy of the intermediates.This study provides a feasible strategy to manipulate the pore structure and surface functionalization of mesoporous Cu_(2)O nanocrystals by regulating the oxidative etching process,which sheds light on the rational preparation of high-performance CO_(2)RR electrocatalysts.
基金support from Science,Technology and Innovation Commission of Shenzhen Municipality(No.JCYJ20180305000927)Natural Science Fundamental Research Funds of Shandong University(No.2018JC023)+1 种基金Taishan Scholarship in Shandong Provinces(No.ts201511004)Shandong Provincial Natural Science Foundation(No.ZR2020MB048)。
文摘Layer-structured MoS_(2)is regarded as a promising anode material for potassium ion batteries.Herein,MoS_(2)nanosheets on N,P-codoping reduced graphene oxide(MoS_(2)/N,P-rGO)have been successfully prepared via a facile two-step synthesis,where few-layered MoS_(2)nanosheets are chemically bonded onto the surface of N,P-rGO.As an anode material,MoS_(2)/N,P-rGO exhibits a high specific capacity(462.7 mAh·g^(-1)at 100 mA·g^(-1)over 200 cycles),outstanding rate capability(224.9 mAh·g^(-1)at 20 A·g^(-1)),and excellent cycle life(236.6 mAh·g^(-1)at 2 A·g^(-1)after 7,000 cycles),much better than those of MoS_(2)and MoS_(2)/rGO.These advanced performances outperform most of the reported anode materials for potassium ion batteries to date.Meanwhile,the K-storage reactions of MoS_(2)/N,P-rGO have been disclosed through in-situ and ex-situ characterizations.The kinetics analysis confirms that K-storage of MoS_(2)/N,P-rGO is predominant by pseudo-capacitance.
