Carbon‐Supported Organic Electrode Materials for Aqueous Rechargeable Lithium‐Ion Batteries
用于水性可充电锂离子电池的碳支撑有机电极材料
出版日期:2019
作者单位:ChaithraMunivenkatappa,DepartmentofChemistryandResearchcentreN.M.K.R.V.CollegeforWomenJayanagarIIIblockBangalore-560011India,VijethRajshekarShetty,DepartmentofChemistryandResearchcentreN.M.K.R.V.CollegeforWomenJayanagarIIIblockBangalore-560011India,GurukarShivappaSuresh,DepartmentofChemistryandResearchcentreN.M.K.R.V.CollegeforWomenJayanagarIIIblockBangalore-560011India,杂志名称:ChemistrySelect
卷号:4
期数:44
刊号:2365-6549
出版日期:2019
简介:Electroactiveorganiccompoundsrepresentoneofthemostcapableelectrodematerialsforthenextgenerationgreenandsustainablerechargeablelithiumionbatteries.Inthiscontext,wehighlightthesynthesisofanorganicelectrodematerialofazoderivative;diazoaminobenzene(DAAB)bydiazotizationmethodfollowedbylithiationusingconventionaltechnique.Theelectrochemicalperformancesoftheelectro‐activespeciesareexaminedbyCyclicVoltammetry,GalvanostaticCyclingwithPotentialLimitationandPotentio‐electrochemicalImpedanceSpectroscopyinanaqueoussaturatedLi2SO4electrolyte.DAABhasshownconsiderableprogressintermsofcyclicperformance,betterratecapabilityandhighreversiblecapacity.Theelectroactivityofactivespeciesareenhancedbytheadditionofcarboxy‐functionalizedcarbonnanotubes(CNTs‐COOH)asanadditive.Thehalf‐celloflithiateddiazoaminobenzene/CNTs‐COOH(dLiDAAB)vs.SCEdeliversacapacityof173.7?mAhg?1upto10cyclesat0.08?mA.ThefullcellconfigurationdLiDAAB|aq.SaturatedLi2SO4|2‐[1H‐indol‐2‐yl(1H‐indol‐3‐yl)methyl]phenol(b‐IMP)deliveredadischargecapacityof81.99?mAhg?1inthepotentialwindowof?0.2?Vto1.2?V.ThebatteryperformanceofthecellhasbeenincreasedsignificantlybytheinfluenceofCNTs‐COOHgroupwith96.95%columbicefficiency.Thisagreeableresultmarkablysuitsthismaterialasananodeinaqueousrechargeablelithiumbatteriesforfutureneedsofenergytechnology.
