简介:大音阶的第五音胶化旋转涂层在Pt/Ti/SiO2/Sisubstrate上准备的Pb(Zr0.4Ti0.6)O-3电影作为最高的电极与磅或Ru被用于铁电体电容器。为thePt/PZT/Pt和Ru/PZT/Pt铁电体电容器,尽管与一样的铁电体他,不同最高的电极材料招致PZT电容器的不同性质例如疲劳,漏,残余、浸透的极化,除了PZTfilm的类似的水晶取向。在(10)10交换周期以后,Ru/PZT/Pt和Pt/PZT/Ptcapacitors的残余的极化分别地减少到70%和84%。在(8)10交换周期以后,后者的漏水流密度在积极偏爱显然增加,与前者相比。为最高的电极的Differentmaterials在PZT/top电极接口带不同条件。在PZT/electrode接口和在到充电注射的PZT/electrode接口的电极材料的氧化物的影响的氧空缺集中的Theinfluence能作为最高的电极与磅或Ru解释PZT电容器的性质的差别。
简介:ThemetaloxidesCuMnCeandCeYwashcoatsoncordieritewerepreparedusinganimpregnationmethod,andthenusedassupportfortheactivePtcomponenttopreparethePt/CuMnCeandPt/CeYmonolithiccatalystsforthedeepoxidationofVOCs.IncomparisonwiththePt/CeY,CuMnCe,andCeYmonolithiccatalysts,thePt/CuMnCemonolithiccatalystshowsanexcellentperformancefortoluene,ethylacetate,andn-hexaneoxidationandtheT90%islowto216,200and260℃,respectively.TheactivecomponentsPt/PtOandCuMnCeresultinabettersynergeticinteraction,whichpromotethecatalystreducibility,increasetheoxygenmobility,andenhancetheadsorptionandactivationoforganicmolecules.
简介:摘要本文针对110kV母线PT开口三角形是否装设二次空开的设计提出分析讨论,希望得出合理化的建议,对于今后我们在新项目进行送电前期准备工作中能够提出整改要求,也方便后续我们在运行值班中监盘,关注设备运行状态。当然作为变电运行人员,熟悉现场设备及掌握现场设备运行情况是每个运行人员必须掌握技能。
简介:Electrolysisofammoniainalkalineelectrolytesolutionwasappliedfortheproductionofhydrogen.BothPt-loadedNifoamandPt-IrloadedNifoamelectrodeswerepreparedbyelectrodepositionandservedasanodeandcathodeinammoniaelectrolyticcell,respectively.TheelectrochemicalbehaviorsofammoniainKOHsolutionwereindividuallyinvestigatedviacyclicvoltammetryonthreeelectrodes,i.e.bareNifoamelectrode,Pt-loadedNifoamelectrodeandPt-IrloadedNifoamelectrode.ThemorphologyandcompositionofthepreparedNifoamelectrodewereanalyzedbyscanningelectronmicroscopy(SEM)andX-raydiffraction(XRD).Effectsoftheconcentrationofelectrolytesolutionandtemperatureofelectrolyticcellontheelectrolysisreactionwereexaminedinordertoenhancetheefficiencyofammoniaelectrolysis.Thecompetitionofammoniaelectrolysisandwaterelectrolysisinthesamealkalinesolutionwasfirstlyproposedtoexplainthechangesofcellvoltagewiththeelectrolysisproceeding.Atvaryingcurrentdensities,differentcellvoltagescouldbeobtainedfromgalvanostaticcurves.Thelowcellvoltageof0.58V,whichislessthanthepracticalelectrolysisvoltageofwater(1.6V),canbeobtainedatacurrentdensityof2.5mA/cm2.Basedonsomeexperimentalparameters,suchastheappliedcurrent,theresultingcellvoltageandoutputofhydrogengas,thepowerconsumptionpergramofH2producedcanbeestimated.
简介:摘要:作为变电站运行人员关键核心业务,变电倒闸操作是一项复杂的逻辑性工作,任何一环出错都有可能导致人身、设备甚至电网事件事故,威胁电力系统安全稳定运行。而其中220kV双母线接线方式在高电压等级变电站中普遍存在,其操作的正确性将决定一个变电站甚至一个地区电网的安全稳定运行。本文将从操作逻辑、步骤和管理组织措施入手,解析220kV双母线接线方式下倒母线、停母线操作。
简介:Thisworkreportsafeasiblesynthesisofhighly-dispersedPtandPt-Fenanoparticlessupportedonmultiwallcarbonnanotubes(MWCNTs)withoutFeandmultiwallcarbonnanotubeswithiron(MWCNTs-Fe)whichappliedaselectrocatalystsformethanolelectrooxidation.APtcoordinationcomplexsaltwassynthesizedinanaqueoussolutionanditwasusedasprecursortopreparePt/MWCNTs,Pt/MWCNTs-Fe,andPt-Fe/MWCNTsusingFeCl24H2OasironsourcewhichwerenamedS1,S2andS3,respectively.Thecoordinationcomplexofplatinum(TOA)2PtCl6wasobtainedbythechemicalreactionbetween(NH4)2PtCl6withtetraoctylammoniumbromide(TOAB)anditwascharacterizedbyFT-IRandTGA.ThematerialswerecharacterizedbyRamanspectroscopy,SEM,EDS,XRD,TEMandTGA.TheelectrocatalyticactivityofPt-basedsupportedonMWCNTsinthemethanoloxidationwasinvestigatedbycyclicvoltammetry(CV)andchronoamperometry(CA).Pt-Fe/MWCNTselectrocatalystsshowedthehighestelectrocatalyticactivityandstabilityamongthetestedelectrocatalystsduetothattheadditionof'Fe'promotestheOHspeciesadsorptionontheelectrocatalystsurfaceatlowpotentials,thus,enhancingtheactivitytowardthemethanoloxidationreaction(MOR).
简介:摘要:本文通过对220kV双母线接线方式下的母线停电操作顺序进行分析,总结出操作顺序中的关键操作步骤,并通过案例预想的方式,结合图纸对正确的操作逻辑进行分析,对母线停电操作顺序进行了清晰讲解,以提高运行人员对该操作的理解和掌握。
简介:TheeffectofPtandCuelectrodesontheresistiveswitchingpropertiesandfailurebehaviorsofamorphousZrO2?lmswereinvestigated.ComparedwithCu/ZrO2/Ptstructures,thePt/ZrO2/PtstructuresexhibitbetterresistiveswitchingpropertiessuchasthehigherresistanceratioofOFF/ONstates,thelongerswitchingcyclesandnarrowdistributionofOFFstateresistance(Roff).TheswitchingmechanisminthePt/ZrO2/Ptstructurecanbeattributedtotheformationandruptureofoxygenvacancy?laments;whileintheCu/ZrO2/Ptstructure,thereexistbothoxygenvacancy?lamentsandCu?laments.TheformationofCu?lamentsisrelatedtotheredoxreactionofCuelectrodeundertheappliedvoltage.TheinhomogeneousdispersiveinjectionofCuionsresultsinthedispersiveRoffandsigni?cantdecreaseofoperatevoltage.Schematicdiagramsoftheformationofconductive?lamentsandthefailuremechanismintheCu/ZrO2/Ptstructuresarealsoproposed.