简介:在过去的十年,nanopores为各种各样的潜在的应用程序广泛地被开发了,并且他们的性能极大地取决于nanopores的表面性质。原子层免职(ALD)是为扔薄电影的一种新技术,它很快从一种壁龛技术被开发了到一个确定的方法。ALD电影能保角地甚至在nanoscale在限制区域盖住表面,因此,是一个强大的工具修改合成nanopores并且也的表面制作复杂nanopores被证明。这评论在nanopore合成和ALD基本知识上给简短介绍,然后集中于由ALD和他们的应用程序处理的合成nanopores的各种各样的方面,包括单个分子的察觉到,nanofluidic设备,nanostructure制造和另外的应用程序。
简介:Asimpleroutetosynthesizethepolyaniline(PANI)nanofiberswithdiameterabout150nmwasreported.Inthisstrategy,thePANInanofiberswerefabricatedbyelectrochemicaldepositionbyusingtwo-electrodeconfigurationin0.01Manilineand0.01MH2SO4electrolytes.Theas-preparedmaterialswerecharacterizedbyscanningelectronmicroscopy(SEM),infraredspectroscopy(FTIR),Ramanspectroscopyandthermogravimetricanalysis(TGA).TheelectrochemicalpropertiesofthePANInanofiberselectrodeassupercapacitormaterialswereinvestigated.ThePANInanofiberselectrodeshowedhighcapacitanceof485F·g-1at0.1A·g-1,andthedecreaseinthespecificcapacitanceisabout3.5%in1000cycles.TheresultsindicatethatthePANInanofiberselectrodeshowshighstabilityandretainsitselectrochemicalcapacitancepropertyover1000cycles,suggestingPANInanofibershavepromisingapplicationsinhigh-performancesupercapacitors.
简介:透明的传导性的铝做了锌氧化物(ZnO:艾尔,偶氮)电影被rf(收音机频率)在玻璃底层上准备磁控管从ZnO劈啪作响:3wt%艾尔2O3陶器的目标。氩气体压力的效果(PAr)与小变化被调查在这些电影的电、光、结构的性质上理解影响。使用X光检查衍射(XRD)并且扫描电子显微镜学(SEM)的结构的考试证明ZnO:薄电影是的艾尔(002)面向。抵抗力价值被四点的探查与5.76穩摥甠楳杮愠?灯楴業敺?票牤瑯敨浲污洠瑥潨?倠牵?桰獡?景?㈱?眠獡朠瑯愠?的最低抵抗力测量?潣灭牡瑡癩汥?潬敷?整灭牥瑡牵?挨愮??‰??楳瑳?景漠敮?睴?琠牨敥?牯映畯?慬敹獲漠?敭慴?晲捡獥瀠慬散?湩琠敨渠慥?楦汥?敲楧湯漠??業牣獯牴灩瀠瑡档愠瑮湥慮?桔?湡整湮?慲潤敭猠獹整?慧湩椠?浩牰癯摥戠????潣灭牡摥琠?桴?慰'?湡整湮?污湯?愠摮琠敨爠摡慩楴湯瀠瑡整湲栠污?吗潰敷?敢浡楷瑤?獩爠摥'转棳_??L潳灲楴湯瀠慥獫眠牥?獡楳湧?敧愠敲?吠敨栠杩汨?晥楦楣湥?L潳灲楴湯漠?
简介:ThispaperreportstheuseofAufilmstoimprovetheperformanceofthestackedsolidoxidefuelcell(SOFC)basedonthecharacterizationoftheinterfaceandtheadhesionbetweentheelectrodesoftheSOFCsandtheAgpaste.Thespecimensweremanufacturedtoperformtheexperimentasfollows.ASiO2waferwitha300mmnotchwasattachedtotheelectrodesofaSOFCbyaAgpasteandAufilm,whichweredepositedontheelectrodesbysputteringfor1minor5mindepositiontimeandannealedat300Cfor1h.Thefour-pointbendingtestwasperformed,whichresultedintheformationofanextendedcrackatthetiponthewafernotch,andthecrackpropagationwasobservedusingastereomicroscopeequippedwithacharge-coupleddevice(CCD).Consequently,theinterfacialadhesionenergyandtheeffectoftheAufilmbetweentheeachelectrodeandtheAgpastecanbeevaluated.Onthecathode,theinterfacialadhesionenergywithoutAufilmwas2.59J/m2(uppervalue)andtheadhesionenergyincreasedto11.59J/m2(uppervalue)and15.89J/m2(lowervalue)withtheAufilm.Ontheanode,theinterfacialadhesionenergywithoutAufilmwas1.74J/m2(uppervalue),whichincreasedto11.07J/m2(uppervalue)and14.74J/m2(lowervalue)withtheAufilm.Inaddition,theinterfaceareaswereanalyzedbyscanningelectronmicroscopy(SEM)andenergydispersivespectroscopy(EDS)toestimatetheinterfacedelamination.
简介:ZrC涂层被低压力在石墨底层上扔有Br的化学蒸汽免职(LPCVD)2-Zr-C3H6-H2-Ar系统。微观结构和ZrC涂层的生长行为上的免职时间的效果被调查。ZrC涂层在一个岛层模式成长了。涂层的形成被ZrC的成核统治在起始20分钟,和快速的成核产生了ZrC的有细密纹理的结构涂层。免职时间什么时候在30min上,涂层的生长被统治由晶体,给安排列的结构。精力散X光检查光谱学证明到锆的碳的臼齿的比率在在ZrC涂层,和X光检查的1:1附近显示出的光电子光谱学ZrC是在涂层的主要阶段,由大约2.5mol%伴随了ZrO2次要的阶段。
简介:粉末催化剂Cu-Cr-O用于碳nanotubes(CNT)的合成的一篇小说被开发,它经由氨降水方法被准备。扫描热量计(TG-DSC)的thermo-gravimetric/differential的技术,X光检查衍射(XRD)以及扫描电子显微镜学(SEM)和传播电子显微镜学(TEM)被采用了分别地描绘热分解过程,晶体阶段和同样综合的材料的微结构的形态学。当先锋在400,500,600,和700琠慨?桴獩洠瑥潨?獩猠極慴汢?潦?牰摥捩楴杮琠敨猠牴湥瑧?景挠浯潰楳整氠浡湩瑡獥?桴?業牣浯'炭暘e牴湥瑧?桴潥祲椠?慲歮摥戠?潣灭牡湩?瑩眠瑩?污?桴?被锻烧时,结果证明碳nanotubes成功地作为催化剂用Cu-Cr-O被综合業牣?敬敶?湡?桴?敢瑳琠潷洠捡潲氭癥汥琠敨牯敩?档獯湥映潲?桴?潗汲?楗敤?楡畬敲?數'元沞
简介:Althoughin-situgrowingcarbonnanotubes(CNTs)oncarbonfiberscouldgreatlyincreasethematrix-dominatedmechanicalpropertiesofcarbon/carboncomposites(C/Cs),italwaysdecreasedthetensilestrengthofcarbonfibers.Inthiswork,CNTswereintroducedintounidirectionalcarbonfiber(CF)preformsbyelectrophoreticdeposition(EPD)andtheywereusedtoreinforceC/Cs.EffectsofthecontentofCNTsintroducedbyEPDontensilepropertyofunidirectionalC/Cswereinvestigated.ResultsdemonstratedthatEPDcouldbeusedasasimpleandefficientmethodtofabricatecarbonnanotubereinforcedC/Cs(CNT—C/Cs)withexcellenttensilestrength,whichpaysameaningfulwaytomaximizetheglobalperformanceofCNT—C/Cs.
简介:ThethermodynamicphasestabilityareadiagramsofBCl3-NH3-SiCl4-H2-ArsystemwereplottedviaFactsagesoftwaretopredictthekineticexperimentalresults.Theeffectsofparameters(ie,partialpressureofreactants,depositiontemperatureandtotalpressure)onthedistributionregionsofsolidphaseproductswereanalyzedbasedonthediagrams.Theresultsshowthat:(a)Solidphaseproductsaremainlyaffectedbydepositiontemperature.TheareaofBN+Si3N4phaseincreaseswiththetemperaturerisingfrom650to900℃,anddecreaseswiththetemperaturerisingfrom900to1200℃;(b)Whentemperatureandtotalpressureareconstants,BN+Si3N4phaseexistsatahighpartialpressureofNH3;(c)Theeffectoftotalsystempressureiscorrelatedtodepositiontemperature.Thetemperaturerangingfrom700to900℃underlowtotalpressureistheoptimumconditionforthedeposition.(d)Appropriatekineticparameterscanbedeterminedbasedontheresultsofthermodynamiccalculation.Si–B–Ncoatingisobtainedvialowpressurechemicalvapordeposition.TheanalysisbyX-rayphotoelectronspectroscopyindicatesthatB–NandSi–Narethemainchemicalbondsofthecoating.
简介:Theuniformcauliflower-likeZnOfilmsweredepositedontheconductingsubstratebyachemicalbathdepositioninurea/watersolution.ThefilmstructureandmorphologywerecharacterizedbyX-raydiffraction,thermogravimetricdifferentialthermalanalysis,energydispersivespectroscopy,selectedareaelectrondiffraction,fieldemissionscanningelectronmicroscopyandhighresolutiontransmissionelectronmicroscopy.TheaveragediameterofZnOnanoparticlesandthepetalthicknesswere25nmand8mm,respectively.Dyesensitizedsolarcellsbasedonthecauliflower-likeZnOfilmelectrodeshowedtheshort-circuitcurrentdensityof6.08mA/cm2,theopen-circuitphotovoltageof0.66V,thefillfactorof0.55andtheoverallconversionefficiencyof2.18%.TheequivalentcircuitofcellsbasedontheZnOfilmelectrodeswasmeasuredbytheelectrochemicalimpedancespectroscopy.Furthermore,theanalysisofequivalentcircuitprovidedtherelationshipbetweenthecellperformanceandtheinterfacialresistance,suchastheshuntresistanceandtheseriesresistance.