Author/Authors :
Cui, Jie Analytical and Testing Center of SCUT - South China University of Technology - Guangzhou 510640, China , Cao, Lin Institute of Advanced Wear & Corrosion Resistant and Functional Materials - Jinan University - Guangzhou 510632, China , Zeng, Dahai Institute of Advanced Wear & Corrosion Resistant and Functional Materials - Jinan University - Guangzhou 510632, China , Wang, Xiaojian Institute of Advanced Wear & Corrosion Resistant and Functional Materials - Jinan University - Guangzhou 510632, China , Li, Wei Institute of Advanced Wear & Corrosion Resistant and Functional Materials - Jinan University - Guangzhou 510632, China , Lin, Zhidan Institute of Advanced Wear & Corrosion Resistant and Functional Materials - Jinan University - Guangzhou 510632, China , Zhang, Peng Institute of Advanced Wear & Corrosion Resistant and Functional Materials - Jinan University - Guangzhou 510632, China
Abstract :
Ag-ion-modifiedtitaniumnanotube(Ag/TiO2-NT)arraysweredesignedandfabricatedastheelectrodematerialofsupercapacitorsforelectrochemicalenergystorage.TiO2nanotube(NT)arrayswerepreparedbyelectrochemicalanodicoxidationandthentreatedbyAgmetalvaporvacuumarc(MEVVA)implantation.TheAgamountwascontrolledviaadjustingionimplantationparameters.Themorphology,crystallinity,andelectrochemistrypropertiesofas-obtainedAg/TiO2-NTelectrodesweredistinguishedbasedonvariouscharacterizations.ComparedwithdifferentdosesofAg/TiO2-NTs,theelectrodewiththedoseof5.0×1017ions·cm−2exhibitedmuchhigherelectrodecapacityandgreatlyenhancedactivityincomparisontothepureTiO2-NTs.Themodifiedelectrodeshowedahighcapacitanceof9324.6mF·cm−3(86.9mF·g,1.2mF·cm−2),energydensityof82.8μWh·cm−3(0.8μWh·g,0.0103μWh·cm−2),andpowerdensityof161.0mW·cm−3(150.4μW·g,2.00μW·cm−2)atthecurrentdensityof0.05mA.Therefore,Ag/TiO2-NTscouldactasafeasibleelectrodematerialofsupercapacitors.
Keywords :
Surface Characteristic Effect , Ag/TiO2 Nanoarray Composite Structure , Supercapacitor Electrode Properties , Ag/TiO2-NT
