二氧化錳的制備及超級電容性能研究.pdf

1、哈爾濱工程大學碩士學位論文二氧化錳的制備及超級電容性能研究姓名：楊惠申請學位級別：碩士專業(yè)：應用化學指導教師：張密林20060301哈爾濱工程大學碩士學位論文AbstractSupercapacitorsarcnewenergystoragecoⅡlponcntsbetweeIlba仳eriesandelectmstaticcapacitors，becauseof血eirexcellentpropenies，suchashjgherpo

2、werdens時compared謝mrechargeablebatteries，largerspec強cc印acitorcomp盯ed謝也coIⅣentiorlalc印acitors，吼dbroadoperatiIlgtemperaturemgeand10ngcyclelife，w11ichcouldmeetmehighpowerneedofelectricvehiclesⅥrhenstauningupOraccelemtingThey

3、couldalsobeused嬲elec啊ccomponents，powefsourcesforsmall印paratusanddirectcurrents、^，itchesSupercapacitorsha_vebecomeahotspotiIlresearchbecaLlseofmeirwidepot鉍tial印plicatiOnInmisdissertationwe咖diedseveralmc也odsfort11epfeparat

4、ionofMn02elec廿odematerialforsupercapacitorTheperfomallceofMn02electrodea11dsupercapacitorⅥmsinvestigatedusingcyclicVol咖e謝c(CV)，collstantcu仃entcharge／dischargeandelec仃DchemicalimpedaIlcespectrome廿y(EIS)Xraydi丘Imction(XRD)

5、，sc秈ingelec仃onmicroscope(SE呻andtransmissionelec加nmicroscope(刪)wereusedtoanalyzethes仃uctureofMn02Mn02elec仃odeII慨cerialw船preparedbypotentiodynamicald印ositionnwasfoundthatwhentlleelectrolytewas1mol／L，mesc趾ratew嬲50mV／s，andth

6、escancyclesⅧ200times，也eresllltingMh02particulatesweresmallnanowires謝t11di鋤eteriIlthemgeof100~200nmandlengthintlleorderof05～1O“mIn2mol／L(N出)2S04elec仃Dlytesol嘶onandthepotential瑚geof025~o95V(vsSCE)，tIleaveragcdischargespeci

7、ficc印acitanceofMn02elec仃odewas5057F儋ataconstantcurrentof10mAThee伍ciencyofcharge—dischargeofMn02elec扛odewasiⅡ1provcda&r1000cycles，andmeESR、ⅣasaslowasO26QMn02waspreparedbyliquidphaseredoxmetllodTheiImuenceofreactiontempera

8、加re，dispersantaIldOtllerf如torsweremvestiga士edTheelec仃ochemicaltestsincludedthatCVcllrVespresentedfaVorablecharacteristicofsq啦嘞ess，aIldtlleaveragedisclmrgespecmccapacitanceofMn02elec打ode、vere1387F儋(composedofT№02a11dnMn02

9、)and813F／g(nMn02)byconst趾tcharg“disch孵measurements，atacongtantcurrentof5mANano—Mn02preparedbysol—gelmetllodwaScomposedofn—Mn02a11dJr—Mn02，andthepamclesizewasabout30mAsupercapacitorwasass鋤bledwitllMn02electrode，carbonelec