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1、---------------------------------------------------------------范文最新推薦------------------------------------------------------鈷酸鎳復(fù)合氧化物的電化學(xué)性能研究摘要：利用鎳、鈷的硝酸鹽為原料并以二乙烯三胺為結(jié)構(gòu)導(dǎo)向劑，成功地用水熱法合成了純的尖晶石型鈷酸鎳。用XRD、SEM、N2吸脫附法對(duì)產(chǎn)物進(jìn)行了表征，并重點(diǎn)利用循環(huán)伏安法和恒流充放電研究了尖晶石型鈷酸鎳的電化學(xué)性能。結(jié)果表明：熱處理溫度、時(shí)間，結(jié)構(gòu)導(dǎo)向劑的量對(duì)鈷酸鎳
2、的電化學(xué)性能皆有影響；M2+:DETA=3:1且250℃退火2h的鈷酸鎳電化學(xué)性能最好。其微觀結(jié)構(gòu)為由納米級(jí)薄片組裝成的小球體，孔隙結(jié)構(gòu)豐富，比電容可達(dá)755.81F/g(1A/g)、696.23F/g(5A/g)、635.91F/g(10A/g)、365.55F/g(50A/g)，甚至當(dāng)電流密度增至100A/g時(shí)，比電容仍有252.66F/g。7199關(guān)鍵詞：鈷酸鎳；水熱合成；尖晶石；電化學(xué)性能StudyontheElectrochemicalProperty11/12--------------------------------
3、-------------------------------范文最新推薦------------------------------------------------------ofNickelCobaltOxideAbstract:Purespinel-typenickelcobaltoxide(NiCo2O4)wassucessfullypreparedbyhydrothermalsynthesismethodwithnickelnitrateandcobaltnitrateasrawmaterialsandDETA(diet
4、hylenetriamine)asstructure-directingagent.ProductwascharacterizedbyXRD,SEM,physicaladsorption/desorptionmeasurementsofN2.Electrochemicalpropertywasinvestigatedbycyclicvoltammetry,galvanostaticcharge-dischargetesting.Theresultsshowedthattheelectrochemicalpropertywas11/12
5、---------------------------------------------------------------范文最新推薦------------------------------------------------------affectedbyheat-treatmenttemperatureandholdingtimeaswellasthemagnitudeofDETA.AndNiCo2O4hadthebestelectrochemicalpropertywhenM2+:DETAwas3:1anditwasan
6、nealedat250℃for2hours,themicrostructureofwhichwasspheresconstitutedbynanoflakesandabundedwithpores,exhibitinghighspecificcapacitancesof755.81F/gat1A/g,696.23F/gat5A/g,635.91F/gat10A/g,365.55F/gat50A/g,respectively.Anditcanremainaspecificcapacitanceof252.66F/gevenwhen11/
7、12---------------------------------------------------------------范文最新推薦------------------------------------------------------thecurrentdensityincreasesto252.66F/g.1.2.7其他方法..................................................................................................
8、.................121.3選題的目的和意義................................................................................
