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7 个结果
  • 简介:Reactionergodographyfortheadditionoflithiumhydridetoacetyleneindicatesthatthelithiumhydride,inbothmonomericanddimericforms,reactswiththeacetyleneviatwosimilarandcompetitivepathways.Hence,wehaveobtainedthepseudo-first-orderrateconstantofthisreaction.

  • 标签: Reaction ergodography MECHANISM DYNAMICS LITHIUM HYDRIDE
  • 简介:Inthiswork,viaafacilesolvothermalroute,wesynthesizedananodematerialforlithiumionbatteries(LIBs)—SnS_2nanoparticle/graphene(SnS_2NP/GNs)nanocomposite.ThenanocompositeconsistsofSnS_2nanoparticleswithanaveragediameterof4nmandgraphenenanosheetswithoutrestacking.TheSnS_2nanoparticlesarefirmlyanchoredonthegraphenenanosheets.AsananodematerialforLIBs,thenanocompositeexhibitsgoodListorageperformanceespeciallyhighrateperformance.Atthehighcurrentrateof5,10,and20A/g,thenanocompositedeliveredhighcapacitiesof525,443,and378mAh/g,respectively.ThegoodconductivityofthegraphenenanosheetsandthesmallparticlesizeofSnS_2contributetotheelectrochemicalperformanceofSnS_2NP/GNs.

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  • 简介:Muchattentionhasbeenpaidtothedevelopmentofnewpolymerelectrolytewithspecialmorphology,soastoimprovetheirelectrochemicalpropertiestomeettheneedsoflithium(ion)battery.Inthiswork,PEMlatexwassynthesizedbyemulsion-fi-eepolymerization.ThemicrophotoofPEMlate...

  • 标签: Interface layer POLYMER ELECTROLYTE LITHIUM BATTERY
  • 简介:Anovelgel-likeprocesshasbeendevelopedforsynthesizingLiaNi0.8Co0.2O2powders,usingcitricacidasachelatingagent.Thisprocessimprovesthehomogeneityofconstituentcationandenhancestheirreactivityintheobtainedprecursor.Theresultsofelectrochemicaltestdemonstratedthatthesematerialsexhibitedexcellentelectrochemicalproperties.Itsinitialcapacityreached181.6mAh/gandreversibleefficiencyatthefirstcycleisabout88.6%.

  • 标签: 凝胶体 合成 亚微细粒 LiaNi0.8Co0.2O2 应用 粉末
  • 简介:Athree-dimensionalfew-layerreducedgrapheneoxide-wrappedmesoporousLi4Ti5O12(m-LTO@FLRGO)electrodeisproducedusingasimplesolutionfabricationprocess.WhentestedasananodeforLiionbatteries,them-LTO@FL-RGOcompositeexhibitsexcellentratecapabilityandsuperiorcyclelife.Thecapacityofm-LTO@FL-RGOreaches165.4mAhg-1after100cyclesbetween1and2.5Vatarateof1C.Evenatarateof30C,ahighdischargecapacityof115.1mAhg-1isstillobtained,whichisthreetimeshigherthanthepristinemesoporousLi4Ti5O12(m-LTO).Thegraphenenanosheetsareincorporatedintothem-LTOmicrosphereshomogenously,whichprovideahighconductivenetworkforelectrontransportation.

  • 标签: 锂离子电池 负极材料 介孔 石墨 LI4TI5O12 包裹