简介：Lithium/polypyrrole(Li/PPy)电池作为阴极用锂表被制作，是的PPy阳极，多微孔的膜聚丙烯/聚乙烯/聚丙烯(PP/PE/PP)象电解质象隔板和LiPF6/ethylenecarbonate-dimethyl碳酸盐甲基乙醇碳酸盐(EC-DMC-EMC)合成。Polypyrrole被化学聚合准备。某些基本电气化学的表演被调查。电池的性质被SEM，galvanostatic控告/解除测试，周期的voltammetry(CV)，和a.c阻抗光谱学描绘并且测试。电池的表演上的PPy阳极，塑造寒冷的压力，和电流的隔板，形态学，和电导率的影响被学习。把PP/PE/PP膜用作隔板，电池显示出好存储稳定性和骑车的性质。材料而非形态学的传导性影响了电池的行为。越高传导性，越更好表演房间。阳极小团的20MPa将使好的房间和适合的控告/解除电流的性质成为的合适的塑造寒冷的压力是0.1妈。房间与97%100%coulombic效率显示出优秀性能。95.2mAh/g的最高的分泌物能力被获得。

简介：Thepresentstudyprovidesdetailedexperimentalresultsonthesynthesisandcharacterizationofcarbonizedlithiumtitanatespinel(LTO)compositesaselectrodematerialsforlithiumioncapacitor.TheLTOparticlesweregraftedwithaporouscarbonlayerobtainedfromthepyrolysisofcamphor.ThegraphiticnatureofthecarbonwasconfirmedthroughRamanspectroscopy.Therelativecontributionsfromthecapacitiveanddiffusioncontrolledprocessesunderlyingtheseelectrodesweremathematicallymodeled.Electrontransportmechanismunderlyingtheseelectrodeswasdeterminedbymeasuringtheworkfunctions(φ)ofLTOandcarbongraftedLTOusingultravioletphotoelectronspectroscopy.ThesecarbongraftedLTOcompositesexhibitedanenergydensityof330mWhL-1andapeakpowerdensityof2.8kWL-1,whenemployedaselectrodesincoincellswithexcellentcyclingstabilityattheendof4000cycles.

简介：Reactionergodographyfortheadditionoflithiumhydridetoacetyleneindicatesthatthelithiumhydride,inbothmonomericanddimericforms,reactswiththeacetyleneviatwosimilarandcompetitivepathways.Hence,wehaveobtainedthepseudo-first-orderrateconstantofthisreaction.

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简介：<正>Theglobaltransitionawayfromhydrocarbonstowardenergyalternativesincreasesdemandformanyscarcemetals.Amongtheseislithium,akeycomponentoflithium-ionbatteriesforelectricandhybridvehicles.

简介：NanostructuredtitaniahavebeenintensivelyinvestigatedasanodematerialsofLi-ionbatteriesfortheirexcellenthighrateperformance.ThesizeeffectsofTiO2polymorphs(mainlyrutile,anataseandTiO2-B)ontheirelectrochemicalperformanceandthelatesteffortsinnanoengineeringtitaniaanodesthroughenhancingtheirionicorelectronictransportationorbotharereviewedinthiswork.Wesupposethatmicron-orsubmicronsizedporousstructuresassembledbyTiO2nanoparticles,nanowires/nanotubesornanosheetswithahighpercentageofexposinghighreactivefacetstogetherwithaconductivepercolatingnetworkareidealanodesnotonlyforhighratelithiumstoragebutalsoforhighpackingdensitiesoftheactivematerials.

简介：Graphene,asafabulouslynew-emergingcarbonaceousmaterialwithanidealtwo-dimensionalrigidhoneycombstructure,hasdrawnextensiveattentioninthefieldofmaterialscienceduetoextraordinaryproperties,includingmechanicalrobustness,largespecificsurfacearea,desirableflexibility,andhighelectronicconductivity.Inparticular,asanauxiliarymaterialofelectrodematerials,ithasthepotentialtoimprovetheperformanceoflithium-ionbatteries.However,wideutilizationofgrapheneinlithium-ionbatteriesisnotimplementedsincetremendouschallengesandissues,suchasquality,quantity,andcostconcerns,hinderitscommercialization.Thereremainsadebatewhethergraphenecanactasanimpetusintheevolutionoflithium-ionbatteries.Inthisreview,wesummarizethedesirableproperties,severalcommonsynthesismethodsaswellasapplicationsofgrapheneastheanodeinlithium-ionbatteries,seekingtoprovideinsightfulguidelinesforfurtherdevelopmentofgraphene-basedlithium-ionbatteries.

简介：这份报纸论述nanometer-CeO2的影响的比较研究(tribological和锂的润滑性质上的nano-CeO2)和温度润滑。nanocrystals的形态学和结构分别地借助于传播电子显微镜学(TEM)和X光检查衍射(XRD)被描绘。磨擦并且穿测试在磨擦上被进行并且穿测试者。有nanometer-CeO2的增加的锂油脂举办的结果表演更好减少磨擦并且反穿性能比基础油脂的。当在油脂的添加剂是0.6时?wt%，磨擦系数(COF)并且穿疤直径(WSD)在28%和13%减少分别地与基础油脂作比较。有0.6的基础油脂和油脂?wt%nanometer-CeO2拥有最低平均COF并且在50点穿宽度?????|

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简介：Thefinalgoaloffusionenergyresearchistomakeiteconomicallycompetitiveandthecostofelectricity(COE)aslowasacceptablebytheenergymarket.Thereforethefusionplasmahastobeoperatingwithhighpowerdensityandtheplasmafacingcomponents(PFC),suchasfirstwallanddivertor,havetosustainhighsurfaceheatloadandbombardmentwithhighparticleflux.SuchrigorousenvironmentsconsequentiallyleadtoseveredamageanderosionofPFCmaterials.Asaresult,thelifetimeofPFCwouldbeshortened.

简介：研究了一些锂基氧化物对异丁烷的催化氧化脱氢作用，其中Ｌｉ２ＳｎＯ３显示出优良的催化性质，Ｌｉ２ＭｎＯ３，ＬｉＦｅ５Ｏ８和ＬｉＡｌ５Ｏ８对异丁烯的选择性较差，而Ｌｉ２ＣｅＯ３，ＬｉＦｅＯ２和ＬｉＺｎＯ２在反应条件下不稳定。系列ＬｉＳｎＯ催化剂的ＣＯ２ＴＰＤ分析表明，当ＳｎＯ２转化为Ｌｉ２ＳｎＯ３时，在表面形成了碱中心，它有利于异丁烯从催化剂表面脱附。Ｏ２ＴＰＤ和Ｈ２ＴＰＤ结果表明，此时吸附的氧物种数量降低，异丁烯的深度氧化受到抑制。Ｌｉ２ＳｎＯ３中晶格氧物种的活性对异丁烷催化氧化脱氢可能是适宜的，但不利于深度氧化。

简介：<正>1IntroductionAlkalinelakesarewidelydistributedintheareaoftheQinghai-TibetPlateau.Mostofthesaltlakesarefamousfortheirhighconcentrationoflithium,potassium,magnesium,boron(Ma,2000).Inrecentyears,asanewenergymaterial,lithiumanditscompoundsarewidelyusedinthenewarea,suchasaerospaceindustry,nuclear

简介：IntheBigBangtheory,primordialnucleosynthesiswasfinishedduringfirsthalfhouroftheuniverse’sexistence.Thisprocessyieldedthemainlightelementsincludinghydrogen,deuterium,heliumandlithium.Thetheoreticalpredictionsmatchverywelltheobserveddeuteriumandheliumabundance,butthe7Liabundanceisoverpredictedbyafactorathree[1].Thisinconsistencyiscalled“cosmologicallithiumproblem”.Inthepastdecade,manyattemptstosolvethisproblemusingconventionalastrophysicsandnuclearphysicsfailed.Recently,weproposedanewsolutiontolithiumproblembyintroducingnon-extensivestatisticsintoBigBangnucleosynthesis[2].

简介：Weproposethatdomaininversioncanbedirectlyinducedbyfemtosecondlaserboththeoreticallyandexperimentally,whichopensapathtoachievethree-dimensional(3D)nonlinearcrystalwithaperiodinsub-micron-scale.Asimulationofdomaininversionismodeledbyconsideringthetemporaldistributionoffemtosecondpulses.Thecalculationresultsclarifythatthedomaininversionscanhappenwithinoraftertheinteractionwiththelaserpulse,andtheresponsetimeofdomaininversionisinthepicosecondleveldependingontheintensityandthematerials.Thedomainreversalwindowsoflithiumniobatebyfemtosecondlaserareobservedwhichagreeswiththeoreticalpredictionsqualitatively.

简介：<正>Withtherapidincreasingdemandofmetallithiumanditscompoundsinscienceandtechnology,studiesonlithiumrecoverythoughlithiumionextractionfromsaltlakebrinesarebloomingbacausemorethan60percentof

简介：Inordertosuccessivelycompetewithsupercapacitors,anabilityoffastdischargeisamustforlithium-ionbatteries.Fromthispointofview,stoichiometricandsubstitutedlithiummanganesespinelsascathodematerialsareoneofthemostprospectivecandidates,especiallyintheirnanosizedform.Inthisarticle,anoverviewofthemostrecentdataregardingphysico-chemicalandelectrochemicalpropertiesoflithiummanganesespinels,especially,LiMn2O4andLiNi0.5Mn1.5O4,synthesizedbymeansofvariousmethodsispresented,withspecialemphasisoftheiruseinhigh-rateelectrochemicalapplications.Inparticular,specificcapacitiesandratecapabilitiesofspinelmaterialsareanalyzed.Itissuggestedthatreducedspecificcapacityisdeterminedprimarilybytheaggregationofmaterialparticles,whereasgoodhigh-ratecapabilityisgovernednotonlybythesizeofcrystallitesbutalsobytheperfectnessofcrystals.Themosttechnologicallyadvantageoussolutionsaredescribed,existinggapsintheknowledgeofspinelmaterialsareoutlined,andthewaysoftheirfillingaresuggested,inahopetobehelpfulinkeepinglithiumbatteriesafloatinthestruggleforaworthyplaceamongelectrochemicalenergysystemsofthe21stcentury.

简介：影印石版术实验与electrooptically悦耳的阶段步借助于一个光阶段面具被执行。阶段面具由转换铁电体领域的六角形的格子在z切割锂niobate底层上制作了的2-dimensional组成。电镀物品光学地悦耳的阶段步在转换领域之间，被一个外部电场的应用程序经由透明电极沿着水晶的z轴获得。氩激光的瞄准横梁通过阶段面具和近的领域紧张模式，在Talbot长度并且为应用电压的不同价值的不同飞机，被用于光刻的实验。初步的结果被显示出，进一步的应用被讨论。这研究部分是的CLC数字TN305在FIRB工程以内由MIUR资助了(没有。RBNE01KZ94)并且部分由MIUR工程(号码77DDN.1105/2002)。

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