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1、`堿木質(zhì)素基多孔炭材料的制備及其在超級(jí)電容器中的應(yīng)用作者:袁康帥 郭大亮 子明 郭云樸 鄒成 薛國(guó)新來(lái)源:《中國(guó)造紙》2019年第06期Word文檔`Word文檔`Word文檔`Word文檔`Word文檔`Word文檔`Word文檔`????????摘要:以堿木質(zhì)素為原料,按照其與NaOH質(zhì)量比(簡(jiǎn)稱碳?jí)A比)1∶1、1∶3、1∶5進(jìn)行混合,利用實(shí)驗(yàn)室小型管式爐熱裂解制備堿木質(zhì)素基多孔炭材料,對(duì)多孔炭材料進(jìn)行了場(chǎng)發(fā)射掃描電子顯微鏡、粒徑、有機(jī)元素和傅里葉變換紅外光譜分析;并采用自制堿木質(zhì)素基多孔炭材料制備超級(jí)電容器,通過(guò)循環(huán)伏安測(cè)試和恒流充放電測(cè)試分析其
2、電化學(xué)性能。結(jié)果表明,堿木質(zhì)素基多孔炭材料形貌都呈球狀或半球狀,有大量孔結(jié)構(gòu),表面粗糙有起伏,碳?jí)A比從1∶1變化到1∶5,平均粒徑分布逐漸減小。碳?jí)A比為1∶1時(shí),堿木質(zhì)素基多孔炭材料制備的超級(jí)電容器電化學(xué)性能最優(yōu),隨著電流密度從0.1A/g增加到1A/g,其比電容從71F/g下降到62F/g,下降13%左右;在1A/g的超大電流密度下充放電循環(huán)500次,比電容依然維持在62F/g,循環(huán)性能良好。????????關(guān)鍵詞:堿木質(zhì)素;多孔炭材料;超級(jí)電容器;比電容????????中圖分類號(hào):TS761.2????????文獻(xiàn)標(biāo)識(shí)碼:A????????DOI:
3、10.11980/j.issn.0254;508X.2019.06.008Word文檔`????????PreparationofAlkaliLignin;basedPorousCarbonMaterialandItsApplicationinSupercapacitors????????YUANKangshuai1GUODaliang1,2ZHANGZiming1GUOYunpu1ZOUCheng1XUEGuoxin1,*????????(1.CollegeofMaterialsandTextiles,ZhejiangSci;TechUniversi
4、ty,Hangzhou,ZhejiangProvince,310018;????????2.SchoolofEnvironmentalandNaturalResource,ZhejiangUniversityofScienceandTechnology,Hangzhou,ZhejiangProvince,310023)????????(*E;mail:xueguoxin126.)????????Abstract:Inthispaper,theporouscarbonmaterialswerepreparedbypyrolyzingalkaliligni
5、nwithsodiumhydroxideaccordingtothecarbon;baseratioof1∶1,1∶3,1∶5inalaboratorytubefurnace.AndtheporouscarbonmaterialwasanalyzedbyESEM,particlesizeanalyzer,organicelementanalyzerandinfraredspectrum.Supercapacitorswerepreparedusingalkaliligninporouscarbonmaterials,andtheirelectroche
6、micalperformancewasinvestigatedbycyclicvoltammetryandgalvanostaticchargeanddischargetests.Theresultsshowedthatthemorphologyofthealkalilignin;basedporouscarbonmaterialsweresphericalorhemispherical,withalargenumberofporestructures,androughsurface.However,asthecarbon;baseratioincre
7、asingfrom1∶1to1∶5,theaverageparticlesizedistributiongraduallydecreased.Whenthecarbon;baseratiowas1∶1,thesupercapacitorhadthebestelectricalperformance.Asthecurrentdensityincreasesfrom0.1A/gto1A/g,thespecificcapacitancedecreasedfrom71F/gto62F/g,;whichdecreasedabout13%.Thespecificc
8、apacitancewasstillmaintainedat62F/gwhenitcircul