FeP/FeO was prepared on carbon cloth(CC)via hydrothermal method,heat treatment in air,and phosphorization in argon.FeP/FeO/CC presents a porous and loose morphology which is conducive to the exposure of active sites a...FeP/FeO was prepared on carbon cloth(CC)via hydrothermal method,heat treatment in air,and phosphorization in argon.FeP/FeO/CC presents a porous and loose morphology which is conducive to the exposure of active sites and the transfer of reactants.FeP/FeO/CC requires the low overpotentials of 257 and 117 mV(vs.reversible hydrogen electrode(RHE))to achieve the current density of 10 mA_·cm^(-2)for oxygen evolution reaction(OER)and hydrogen evolution reaction(HER)in alkaline KOH solution,respectively.The small Tafel slope values of 36.1 mV_·dec^(-1)(for OER)and 96.2 mV_·dec^(-1)(for HER)indicate that FeP/FeO/CC exhibits the fast electrocatalytic reactive kinetics for OER and HER.In particular,the reaction kinetics of FeP/FeO/CC accelerated with the progress of HER.The charge-transfer resistance(R_(ct))of FeP/FeO/CC is only 11Ω.Excellent bifunctional electrocatalytic performances of FeP/FeO/CC should be attributed to the porous morphology and the lower charge-transfer resistance.展开更多
西门子Definition AS CT目前是我院CT检查的主力机,日常检查量大、使用率高,故障频发。本文详细分析了电源模块供电异常导致的检查床故障,前滑环系统导致机架初始化失败故障,重建计算机参数表异常导致的图像异常故障等,并针对每例故障...西门子Definition AS CT目前是我院CT检查的主力机,日常检查量大、使用率高,故障频发。本文详细分析了电源模块供电异常导致的检查床故障,前滑环系统导致机架初始化失败故障,重建计算机参数表异常导致的图像异常故障等,并针对每例故障提出了具体的排查方法和解决方案。通过自主维修以最小的成本修复机器,可节省大量经费,保障医院和科室的正常运行,同时为同行维修此类故障提供参考。展开更多
基金Funded by the Natural Science Foundation of Anhui Higher Education Institution of China(No.2023AH040160)the Natural Science Foundation of Anhui Province(No.1808085QE126)+1 种基金the Hefei Normal University High level Talent Research Startup Fund Project(No.2022rcjj55)the Collaborative Innovation Project of Colleges and Universities in Anhui Province(No.GXXT-2021-091)。
文摘FeP/FeO was prepared on carbon cloth(CC)via hydrothermal method,heat treatment in air,and phosphorization in argon.FeP/FeO/CC presents a porous and loose morphology which is conducive to the exposure of active sites and the transfer of reactants.FeP/FeO/CC requires the low overpotentials of 257 and 117 mV(vs.reversible hydrogen electrode(RHE))to achieve the current density of 10 mA_·cm^(-2)for oxygen evolution reaction(OER)and hydrogen evolution reaction(HER)in alkaline KOH solution,respectively.The small Tafel slope values of 36.1 mV_·dec^(-1)(for OER)and 96.2 mV_·dec^(-1)(for HER)indicate that FeP/FeO/CC exhibits the fast electrocatalytic reactive kinetics for OER and HER.In particular,the reaction kinetics of FeP/FeO/CC accelerated with the progress of HER.The charge-transfer resistance(R_(ct))of FeP/FeO/CC is only 11Ω.Excellent bifunctional electrocatalytic performances of FeP/FeO/CC should be attributed to the porous morphology and the lower charge-transfer resistance.
文摘西门子Definition AS CT目前是我院CT检查的主力机,日常检查量大、使用率高,故障频发。本文详细分析了电源模块供电异常导致的检查床故障,前滑环系统导致机架初始化失败故障,重建计算机参数表异常导致的图像异常故障等,并针对每例故障提出了具体的排查方法和解决方案。通过自主维修以最小的成本修复机器,可节省大量经费,保障医院和科室的正常运行,同时为同行维修此类故障提供参考。
