熔鹽電解法制備納米碳材料及其作為鋰離子電池負(fù)極材料的研究.pdf

1、分類號UDC：南級學(xué)位論文熔鹽電解法制備納米碳材料及其作為鋰離子電池負(fù)極材料的研究作者姓名王麴廈指導(dǎo)教師迕茜熬攫壅jE太堂撾抖皇冶金堂瞳迨壘塑堡位堂受煎壓申請學(xué)位級別亟學(xué)科類別王堂學(xué)科專業(yè)名稱冶金物理化學(xué)論文提交日期2鯉：Q!論文答辯日期2QQ曼Q!：!l學(xué)位授予日期——答辯委員會主席旦鏖塞熬撞評蒯人邑彥童住亡堊一東北大學(xué)2005年1月東北大學(xué)碩士學(xué)位論文ABSTRACTASTUDYoFPREPARATIoNoFCARBoNNANoMA

2、TERIALSINMoLTENSAU’SANDTHEIRAPPLICATIoNINLITHIUMIoNBATTERYABSTRACTCarbonmaterialsincludingcarbonnanotubes(CNTs)wereformedduringtheelectrolysisofgraphiteusingmoltensaltsaselectrolyteThestructure，morphologyandpropertieswer

3、echaracterizedbyXRD，TEM，TGA—DTA，RamanscatteringanalysisPreliminaryresultsfromapplyingcarbonmaterialsasnegativematerialsforlithiumionbatterieswerereportedInmoltenLiCl，LiCl(63wt％)NaCl(37wt％)，LiCl(99wt％)SnCl2(1wt％)andLiCI(6

4、23wt％)NaCl(367wt％)SnCl2(1wt％)，theeffectsofthecompositionofthemeltsandelectrolyticparametersonthestructure，morphologyandphasecompositionofthecarbonpowderswereevaluatedinthispaperUndertheconditionofmoltenLiCl(63wt％)NaCl(37

5、wt％)，cathodediameterof6mmvoltageof84Vtemperatureof620℃andLiCl(623wt％)NaCl(36，7wt％)SnCl2(1wt％)，cathodediameterof10mm，voltageof18Vtemperatureof620。C，WefoundthatthecontentofCNTsinnanomaterialswerehigherThestructureandmorpho

6、logyofCNTslookedsimilarinbothmoltensaltsCNTswereentangledtobundleswithadiameterof1020nmequallyThecarbonmaterialswerepurewiththeaveragediametersof23nmand47nmrespectivelybyXRDanalysisCNTsformedinmoltenLiCl(63wt％)NaCI(37wt％

7、)tookupabout30percentofcarbonpowderswithhighergraphitizationbyTGA—DTAandRamanscatteringanalysisTin—doppedcarbonmaterialswerepreparedbyelectrolysisinmoltenLiCI(623wt％)NaCl(367wt％)SnCl2(1wt％1X—rayanalysisspectrumconfirmedt

8、hepresenceofSnandSn02withintheproductsCarbonnano—materialsasnegativematerialsforlithiumionbatterieshadexcellentelectrochemicalcapacityunderthepreparationconditionofmoltenLiCl(63wt％)NaCl(37wt％)，cathodediameterof6mm，voltag