Enhanced electrochemical performance of Li-ion batteries with nanoporous titania as negative electrodes-中国期刊网

摘要 NanoporousanataseTiO2(np-TiO2)electrodeshavebeendevelopedviatheanodizationoftitaniumfoilsinfluoridecontainingelectrolytes,anditsapplicationinrechargeablelithium-ionbatteries(LIBs)wasinvestigated.Fourdifferenttypesofnp-TiO2electrodeswithdifferentporediametersof14.7±8.2nm,12.8±6.8nm,11.0±5.5,and26.7±13.6nmwerefabricatedforevaluatingtheeffectofnanoporouscharacteristicsontheLIBperformance.Thedischargecapacityofthefourbatterytypes1,2,3,and4were132.7mAhg-1,316.7mAhg-1,154.3mAhg-1,and228.4mAhg-1,respectively.Inaddition,theseelectrodes1,2,3,and4exhibitedreversiblecapacityof106.9mAhg-1after295th,180.9mAhg-1after220th,126.1mAhg-1after150th,and206.7mAhg-1after85thcycleatarateof1C,respectively.Itwasnotedthatthecycliclifeofthebatterieshadaninverserelationship,andthecapacityhadaproportionalrelationshiptotheporediameter.Theenhancedelectrochemicalperformanceofthenanoporouselectrodescanbeattributedtotheimprovedconductivityandtheenhancedkineticsoflithiuminsertion/extractionatelectrode/electrolyteinterfacesbecauseofthelargespecificsurfaceareaofnp-TiO2electrodes.

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Enhanced electrochemical performance of Li-ion batteries with nanoporous titania as negative electrodes

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Enhanced electrochemical performance of Li-ion batteries with nanoporous titania as negative electrodes

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