电子电气类专业毕业设计外文翻译

《电子电气类专业毕业设计外文翻译》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、附录一：外文原文Supercapacitors-AnOverviewKeywords:Electrostaticcapacitor;Electrolyticcapacitor;Ceramiccapacitor;Electricaldoublelayercapacitor;SuperCapacitor1.INTRODUCTIONThispaperoffersaconcisereviewontherenaissanceofaconventionalcapacitortoelectrochemicaldoublelaye

2、rcapacitororsupercapacitor.Capacitorsarefundamentalelectricalcircuitelementsthatstoreelectricalenergyintheorderofmicrofaradsandassistinfiltering.Capacitorshavetwomainapplications;oneofwhichisafunctiontochargeordischargeelectricity.Thisfunctionisappliedtosmooth

3、ingcircuitsofpowersupplies,backupcircuitsofmicrocomputers,andtimercircuitsthatmakeuseoftheperiodstochargeordischargeelectricity.TheotherisafunctiontoblocktheflowofDC.Thisfunctionisappliedtofiltersthatextractoreliminateparticularfrequencies.Thisisindispensablet

4、ocircuitswhereexcellentfrequencycharacteristicsarerequired.Electrolyticcapacitorsarenextgenerationcapacitorswhicharecommercializedinfullscale.Theyaresimilartobatteriesincellconstructionbuttheanodeandcathodematerialsremainthesame.Theyarealuminum,tantalumandcera

5、miccapacitorswheretheyusesolid/liquidelectrolyteswithaseparatorbetweentwosymmetricalelectrodes.Anelectrochemicalcapacitor(EC),oftencalledaSupercapacitororUltracapacitor,storeselectricalchargeintheelectricdoublelayeratasurface-electrolyteinterface,primarilyinhi

6、gh-surface-areacarbon.Becauseofthehighsurfaceareaandthethinnessofthedoublelayer,thesedevicescanhaveveryahighspecificandvolumetriccapacitance.Thisenablesthemtocombineapreviouslyunattainablecapacitancedensitywithanessentiallyunlimitedcharge/dischargecyclelife.Th

7、eoperationalvoltagepercell,limitedonlybythebreakdownpotentialoftheelectrolyte,isusually<1or<3voltspercellforaqueousororganicelectrolytesrespectively.Theconceptofstoringelectricalenergyintheelectricdoublelayerthatisformedattheinterfacebetweenanelectrolyteandaso

8、lidhasbeenknownsincethelate1800s.Thefirstelectricaldeviceusingdouble-layerchargestoragewasreportedin1957byH.I.BeckerofGeneralElectric(U.S.Patent2,800,616).Unfortunately,Becker’sdev