Power ultrasonic treatment is an efficient way to improve the solidification structure and mechanical properties of metals. The effect of 600 W power ultrasonic treatment on the solidification process and structure of...Power ultrasonic treatment is an efficient way to improve the solidification structure and mechanical properties of metals. The effect of 600 W power ultrasonic treatment on the solidification process and structure of HT150 gray cast iron has been studied, and the fining mechanism of power ultrasonic has been analyzed.展开更多
Improving the performance of anode is a crucial step for increasing output power of marine sediment microbial fuel cells(MSMFCs)to drive marine monitor to work for a long term on the ocean floor.A pyrolyzed iron phtha...Improving the performance of anode is a crucial step for increasing output power of marine sediment microbial fuel cells(MSMFCs)to drive marine monitor to work for a long term on the ocean floor.A pyrolyzed iron phthalocyanine modified multi-walled carbon nanotubes composite(FePc/MWCNTs)has been utilized as a novel nodified anode in the MSMFC.Its structure of the composite modified anode and electrochemical performance have been investigated respectively in the paper.There is a substantial improvement in electron-transfer efficiency from the bacteria biofilm to the modified anode via the pyrolyzed FePc/MWCNTs composite based on their cyclic voltammetry(CV)and Tafel curves.The electron transfer kinetic activity of the FePc/MWCNTs-modified anode is 1.86 times higher than of the unmodified anode.The maximum power density of the modified MSMFC was 572.3±14 m W m^-2,which is 2.6 times larger than the unmodified one(218.3±11 m W m^-2).The anodic structure and cell scale would be greatly minimized to obtain the same output power by the modified MSMFC,so that it will make the MSMFC to be easily deployed on the remote ocean floor.Therefore,it would have a great significance for us to design a novel and renewable long term power source.Finally,a novel molecular synergetic mechanism is proposed to elucidate its excellent electrochemical performance.展开更多
为了解决在役核电厂因空间受限无法实施1E级蓄电池组扩容的问题,研究设计了一种磷酸铁锂蓄电池组样机。考虑行业尚无针对磷酸铁锂蓄电池组的1E级鉴定标准或规范,研究并建立了磷酸铁锂蓄电池组1E级鉴定方法和流程。该方法和流程遵循压水...为了解决在役核电厂因空间受限无法实施1E级蓄电池组扩容的问题,研究设计了一种磷酸铁锂蓄电池组样机。考虑行业尚无针对磷酸铁锂蓄电池组的1E级鉴定标准或规范,研究并建立了磷酸铁锂蓄电池组1E级鉴定方法和流程。该方法和流程遵循压水堆核电厂核岛电气设备设计和建造规则(Design and Construction rules for Electrical and I&C Systems and Equipment,简称RCC-E)关于K3类电气设备1E级鉴定基本流程,包含基准试验、老化试验、极限性能试验和抗震试验四个阶段试验内容。经过1E级鉴定试验验证,表明该磷酸铁锂蓄电池组样机符合1E级鉴定要求。研究结果表明,该磷酸铁锂蓄电池组设计上符合1E级蓄电池组设备鉴定要求,其体积能量密度从原30~50 Wh/L提升至约160 Wh/L。该成果可解决受限空间1E级蓄电池组无法扩容的问题,也为行业1E级蓄电池组能量密度提升提供了参考。展开更多
文摘Power ultrasonic treatment is an efficient way to improve the solidification structure and mechanical properties of metals. The effect of 600 W power ultrasonic treatment on the solidification process and structure of HT150 gray cast iron has been studied, and the fining mechanism of power ultrasonic has been analyzed.
基金supported by the National Defense Science and Technology Innovation Zone Project (Nos. 17H863-05-ZT-002-040-001 and 18-H863-05-ZT-002-01301
文摘Improving the performance of anode is a crucial step for increasing output power of marine sediment microbial fuel cells(MSMFCs)to drive marine monitor to work for a long term on the ocean floor.A pyrolyzed iron phthalocyanine modified multi-walled carbon nanotubes composite(FePc/MWCNTs)has been utilized as a novel nodified anode in the MSMFC.Its structure of the composite modified anode and electrochemical performance have been investigated respectively in the paper.There is a substantial improvement in electron-transfer efficiency from the bacteria biofilm to the modified anode via the pyrolyzed FePc/MWCNTs composite based on their cyclic voltammetry(CV)and Tafel curves.The electron transfer kinetic activity of the FePc/MWCNTs-modified anode is 1.86 times higher than of the unmodified anode.The maximum power density of the modified MSMFC was 572.3±14 m W m^-2,which is 2.6 times larger than the unmodified one(218.3±11 m W m^-2).The anodic structure and cell scale would be greatly minimized to obtain the same output power by the modified MSMFC,so that it will make the MSMFC to be easily deployed on the remote ocean floor.Therefore,it would have a great significance for us to design a novel and renewable long term power source.Finally,a novel molecular synergetic mechanism is proposed to elucidate its excellent electrochemical performance.
文摘为了解决在役核电厂因空间受限无法实施1E级蓄电池组扩容的问题,研究设计了一种磷酸铁锂蓄电池组样机。考虑行业尚无针对磷酸铁锂蓄电池组的1E级鉴定标准或规范,研究并建立了磷酸铁锂蓄电池组1E级鉴定方法和流程。该方法和流程遵循压水堆核电厂核岛电气设备设计和建造规则(Design and Construction rules for Electrical and I&C Systems and Equipment,简称RCC-E)关于K3类电气设备1E级鉴定基本流程,包含基准试验、老化试验、极限性能试验和抗震试验四个阶段试验内容。经过1E级鉴定试验验证,表明该磷酸铁锂蓄电池组样机符合1E级鉴定要求。研究结果表明,该磷酸铁锂蓄电池组设计上符合1E级蓄电池组设备鉴定要求,其体积能量密度从原30~50 Wh/L提升至约160 Wh/L。该成果可解决受限空间1E级蓄电池组无法扩容的问题,也为行业1E级蓄电池组能量密度提升提供了参考。
