共查询到20条相似文献,搜索用时 15 毫秒
1.
Numerical calculation and industrial measurements of metal pad velocities in Hall-Heroult cells 总被引:3,自引:0,他引:3
1 INTRODUCTIONMagnetohydrodynamics(MHD )playsanimportantroleincellperformance[1] .Inrecentyears ,notonlyinthenewcelldesigningbutalsoinincreasingamperageinexistinglines ,moreattentionshavebeenpaidonthestudyofMHD[2 ] .Twoapproacheshavebeenusedforde terminingtheM… 相似文献
2.
Effect of electroless plating nickel treatment on electrode properties of Zr-based AB_2 type alloy 总被引:2,自引:1,他引:1
1 INTRODUCTIONInrecentyears ,theNi metalhydride (Ni MH )batteryhasgraduallyandsteadilyreplacedtheNi Cdbatteryandholdsalargeshareinthesecondarybat terymarket[1~ 3 ] .However ,itsrivalssuchastheLi ionsecondarybatteryarechallengingthestatusoftheNi MHbattery[4 ] .Futu… 相似文献
3.
1 INTRODUCTIONInrecent years,nickel metalhydridebatteriesarebecoming popularitywithdeveloping portablecomputer,cellularphoneandsoon .Ni/MHbatterieshavealotofadvantagesoverotheradvancedbatterysystemsbecauseoftheirhighenergydensity ,highchargeanddischargeabi… 相似文献
4.
Influences of heat treatment on electrochemical characteristics of La0.75Mg0.25Ni2.8Co0.5 hydrogen storage electrode alloy 总被引:1,自引:3,他引:1
1 INTRODUCTIONDuringthelastdecade ,thedemandforthenickel/metal hydride (Ni/MH )secondarybatterieshasbeengrowingrapidlybecauseoftheirhighenergydensity ,highHRD ,longcharge dischargecyclelifeandfriendlyenvi ronmentalproperties[14 ] .Hydrogenstoragealloys ,astheneg… 相似文献
5.
1 INTRODUCTIONNickel metalhydride (Ni/MH )batterieshavebeendevelopedtomeetthedemandsforapowersourcewithhighenergydensity ,excellenthigh ratecapability ,longcyclelifeand goodenvironmentalcompatibility[1,2 ] ,andextensiveresearcheshavebeendoneonthem[3~ 5] .Theperfor… 相似文献
6.
1 INTRODUCTIONMischmetalbasedAB5 typeMm (NiCoMnAl) 5alloysarenowwidelyusedasthenegativeelectrodematerialsofNi/MHbatteries.Amongtheelementsofthealloys,Cohasbeenbelievedtohavetheeffectofloweringthevolumeexpansionofthecompoundonhydrogenation[1 ] andpreventingth… 相似文献
7.
Wang Chaoqun Wang Ning Jin Hongmei Li Guoxun General Research Institute for Nonferrous Metals Beijing P. R. China 《中国有色金属学会会刊》1999,9(2)
1INTRODUCTIONNi/MHrechargeablebateriesusinghydrogenstoragealoyshavereceivedgreatatentionbecauseofhighcapacity,noCdcontaminat... 相似文献
8.
Chen Weixiang Department of Materials Science Engineering Zhejiang University Hangzhou P. R. China 《中国有色金属学会会刊》1998,(3)
1INTRODUCTIONNickelmetalhydride(Ni/MH)bateriesemployingahydrogenstoragealoyasthenegativematerialhaveatractedmuchatentionbe?.. 相似文献
9.
Wang Xianyou Zhang Yunshi Yan Jie Yuan Huatang Song Deying Institute of New Energy Material Chemistry Nankai University Tianjin P. R. China 《中国有色金属学会会刊》1998,(4)
INTRODUCTIONNickelhydroxideelectrodeshavebeenwidelyusedaspositiveelectrodeinNiCd,NiH2andNiMHsecondarybateries.Improvement... 相似文献
10.
Chen Weixiang 《中国有色金属学会会刊》1999,9(3)
1 INTRODUCTIONNickelmetalhydride(Ni/MH)batterieshaveattractedmuchattentionbecausetheyhavehigherenergydensityandenvironmentaladvantagecomparedwithNi/Cdbatteries.ManymulticomponentAB5typehydrogenstoragealloyshavebeendevelopedtoimproveperformancesof… 相似文献
11.
Zhang Wenkui 《中国有色金属学会会刊》1999,9(3)
1 INTRODUCTIONTheAB2typeZrbasedLavesphasehydrogenstoragealloyshavebeenstudiedextensivelyduetotheirhighcapacity,longcyclelifetimeandthepotentialtobecomeapromisingcandidateforAB5typealloysinNiMHbatteries[1,2].UnlikethecommonAB5typehydrogenstorag… 相似文献
12.
Zeng Wenming Chen Nianyi Shanghai Institute of Metallurgy Chinese Academy of Sciences Shanghai Chen Qiyuan Department of Chemistry Central South University of Technology Changsha 《中国有色金属学会会刊》1997,(3)
THERMODYNAMICSOFTHERMALDECOMPOSITIONOFALUMINUMHYDROXIDE①ZengWenming,ChenNianyiShanghaiInstituteofMetalurgy,ChineseAcademyofSc... 相似文献
13.
1IntroductionThelongcyclelifeoftherechargeableNiMH(MH=metalhydride)batteryisoneofthemainrequirementsforpracticalapplicati... 相似文献
14.
1 INTRODUCTIONTantalumcanbeoxidizedatlowtemperaturein toinactiveTa2 O5 withcompacttextureandspecificresistanceof 1 0 18Ω·cm[1],whichentitlestantalumgoodcorrosionresistanceandelectricresistance ,andalsomakesitimpossibletogetthickTa2 O5 filmsatlowtemperature .Theo… 相似文献
15.
Emission mechanism of Mo-Y_2O_3 cathode 总被引:6,自引:3,他引:3
1 INTRODUCTIONMo Y2 O3isanewkindofrareearth molybde numthermioniccathodematerials[1].ItisexpectedtosubstituteradioactiveW ThO2 cathodematerialsinthefuture .Sincethemiddleof 1 970s,peoplehavemainlydoneresearchononekindofrareearth molyb denumcathode—Mo La2 O3cathode[… 相似文献
16.
Chemical stability of La_2O_3 in La_2O_3-Mo cathode materials 总被引:1,自引:0,他引:1
1 INTRODUCTIONThO2 Wthermioniccathodesarestillwidelyusedinhigh powervacuumtubesforindustrialheat ing .ItiswellknownthattheradioactivityofThO2leadsproblemstoitsmanufactureandapplication .La2 O3 Mo ,oneoftheattractivealternatives,wasin ventedinthemidstof 1970s[1~ … 相似文献
17.
1 INTRODUCTIONTibasedIrO2 coatinganodeswerewildlyusedinelectrochemicalindustryfortheirhighelectrocatalyticactivityandstability[1] .Inanextremecondition ,suchashigh speedelectrodeposition ,however ,thestabilityofIrO2 isnolongersatisfied .Therefore ,themodificat… 相似文献
18.
Recent development in researches of electrochemistry of sulphide flotation at Central South University of Technology 总被引:1,自引:0,他引:1
1 COLLECTORLESSFLOTATION1.1 NaturalfloatabilityTheinherenthydrophobicityoncethoughttobetypicalofsulfides[1] isnowthoughttoberestrictedtosulfidessuchasmolybdeniteandothermineralsorcompoundwithspecialstructuralfeatures .Mineralssuchasmolybdenite ,orpiment ,re… 相似文献
19.
1 INTRODUCTIONThestudyofmoltenstructureofCaO SiO2 ,whichactasthebasicfactorinfluencingthephysicalandchemicalpropertiesofthesilicat 相似文献
20.
1 INTRODUCTIONSinceOvshinskyetal[1]reportedforthefirsttimethatazero resistancestateat 1 55KwasobservedinF dopedYBaCuOsystem ,theeffectofF dopingonsuperconducting propertieshasstimulatedmanyscientiststofurtherefforts.Butvariousconflictingresultswerereportedon… 相似文献