锂离子电池英语论文

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1、word资料下载可编辑Octadecylamineoxideasthetemplatesynthesisoflithiatedvanadiumoxideshalfopened-nanotubesSynthesisofLithiatedVanadiumOxidesHalfOpened-nanotubesasCathodeMaterialsforLithiumIonBatteriesJunliSun*InstituteofScienceandResearch,DepartmentofScienceandResearch,ChinesePeople’sArmedPoliceForceAcademy

2、,220XihuanRoad,AnciDistrict,LangfangCity,HebeiProvince(065000),China.Tel(86)316-2067617AbstractThelithiatedvanadiumoxideshalfopened-nanotubes(HOT)aresynthesizedbyusingsolid-stateandsolvothermalreactionwithoctadecylamineoxideasthetemplate.Transmissionelectronmicroscopy(TEM)andscanningelectronmicrosc

3、opy(SEM)characterizationsshowthatthesynthesizedlithiatedvanadiumoxidesnanotubesarehalfopenedandagglomerate.X-raydiffraction(XRD)investigationdemonstratesthatthesynthesizedhalfopened-nanotubesaremostconsistedofmonoclinicphaseLiV3O8.Cyclicvoltammetry(CV)testindicatesthatsomeredoxprocessesarehindered,

4、whichispropitioustoimproveelectrochemicalperformanceofLiV3O8cathodematerial.Keywords:electrochemicalproperties;nanostructures;SEM;TEMIntroductionNanostructuredcathodeandanodematerialsinlithiumionbatterieshaveattractedgreatattention.Thisisbecausetheyshowhighercapacitythanconventional*Correspondingau

5、thor.Tel.:+86-316-2067617;Fax:+86-316-2067613E-mailaddresses:sunjunli@nankai.edu.cn专业技术资料word资料下载可编辑electrodescomposedofthesamematerials,andthesurfaceareaofnanostructuredelectrodesismuchlargerthanthatofconventionalelectrodes.Vanadiumoxideshavebeenwidelystudiedascathodeactivematerialsinlithiumrechar

6、geablebatteriesbecauseoftheirlowcostandhightheorycapacity[1-6].ChenWetal.usethetemplatehydrothermaltreatmenttosynthesizeV2O5nanotubes.Whentheyareusedascathode,theresultingcellhasshowninitialdischargespecificcapacityof306mAhg-1at3.6-1.5V,whichissignificantlysuperiortothatofmaterialspreparedbyconvent

7、ionalmethods.Thisnanotubecanmaintain80%ofitsinitialcapacity[7].ButtherewerenoreportsaboutanymethodstoprocessLiV3O8halfopened-nanotubeselectrodematerial.Inthiswork,high-orderedLiV3O8halfopened-nanotubesarray