阀控式密封铅酸蓄电池(Valve Regulated Lead Acid Battery,VRLA)广泛应用于通信电源系统中,是直流供电系统的重要组成部分,其安全可靠的运行极为重要。由于使用环境差,不适当的使用和维护等因素,阀控蓄电池组的实际使用寿命远不及理论...阀控式密封铅酸蓄电池(Valve Regulated Lead Acid Battery,VRLA)广泛应用于通信电源系统中,是直流供电系统的重要组成部分,其安全可靠的运行极为重要。由于使用环境差,不适当的使用和维护等因素,阀控蓄电池组的实际使用寿命远不及理论寿命。通过分析阀控铅酸蓄电池失效的主要因素,针对非物理损伤部分进行了修复试验,试验结果证实配置的活化液可提升阀控铅酸蓄电池的电池有效容量,增加其作为备用电源的服务时间,提升使用寿命,增强直流系统的稳定性,增强供电可靠性,避免发生由于直流备用电源引起的供电事故。展开更多
Graphene dispersions in low-boiling-point green solvents have wide applications in coatings,conducting inks,batteries,electronics and solar cells.Two three-dimensional(3D)cathode interfacial materials(CIMs)(1,3,5,7,9,...Graphene dispersions in low-boiling-point green solvents have wide applications in coatings,conducting inks,batteries,electronics and solar cells.Two three-dimensional(3D)cathode interfacial materials(CIMs)(1,3,5,7,9,11,13,15-octa-(9-bis(30-(N,N-dimethylamino)propyl)-2,7-fluorene)-vinylpentacyclo-octasiloxane)(POSSFN)and(1,3,5,7-tetra-(9-bis(30-(N,N-dimethylamino)propyl)-2,7-fluorene)-adamantane)(ADMAFN)are excellent surfactants for dispersing graphene in ethanol at the concentration of 0.97–1.18 mg mL−1,in agreement with their calculated large adsorption energies on graphene.The results of electron spin resonance,Raman,scanning Kelvin probe microscopy and X-ray photoelectron spectroscopy measurements indicate that the amino groups could n-dope graphene or form dipole interaction with graphene.The two 3D-surfactant-based graphene composites(POSSFN-G and ADMAFN-G)can work as high-performance CIMs in organic solar cells(OSCs),which improve the power conversion efficiency(PCE)of the OSCs based on PM6:Y6 to 15.9%–16.1%.ADMAFN forms dipole interaction with graphene in ADMAFN-G and the composite CIM delivers high PCE of 16.11%in the OSCs,while POSSFN forms n-doped composition with graphene in POSSFN-G which works well as thicker CIM film in the OSCs.展开更多
文摘阀控式密封铅酸蓄电池(Valve Regulated Lead Acid Battery,VRLA)广泛应用于通信电源系统中,是直流供电系统的重要组成部分,其安全可靠的运行极为重要。由于使用环境差,不适当的使用和维护等因素,阀控蓄电池组的实际使用寿命远不及理论寿命。通过分析阀控铅酸蓄电池失效的主要因素,针对非物理损伤部分进行了修复试验,试验结果证实配置的活化液可提升阀控铅酸蓄电池的电池有效容量,增加其作为备用电源的服务时间,提升使用寿命,增强直流系统的稳定性,增强供电可靠性,避免发生由于直流备用电源引起的供电事故。
基金the National Natural Science Foundation of China(51820105003,51863002 and 51973042)the Excellent Young Scientific and Technological Talents of Guizhou,China(QKHPTRC[2019]5652)。
文摘Graphene dispersions in low-boiling-point green solvents have wide applications in coatings,conducting inks,batteries,electronics and solar cells.Two three-dimensional(3D)cathode interfacial materials(CIMs)(1,3,5,7,9,11,13,15-octa-(9-bis(30-(N,N-dimethylamino)propyl)-2,7-fluorene)-vinylpentacyclo-octasiloxane)(POSSFN)and(1,3,5,7-tetra-(9-bis(30-(N,N-dimethylamino)propyl)-2,7-fluorene)-adamantane)(ADMAFN)are excellent surfactants for dispersing graphene in ethanol at the concentration of 0.97–1.18 mg mL−1,in agreement with their calculated large adsorption energies on graphene.The results of electron spin resonance,Raman,scanning Kelvin probe microscopy and X-ray photoelectron spectroscopy measurements indicate that the amino groups could n-dope graphene or form dipole interaction with graphene.The two 3D-surfactant-based graphene composites(POSSFN-G and ADMAFN-G)can work as high-performance CIMs in organic solar cells(OSCs),which improve the power conversion efficiency(PCE)of the OSCs based on PM6:Y6 to 15.9%–16.1%.ADMAFN forms dipole interaction with graphene in ADMAFN-G and the composite CIM delivers high PCE of 16.11%in the OSCs,while POSSFN forms n-doped composition with graphene in POSSFN-G which works well as thicker CIM film in the OSCs.
