Tuning N-Species of Graphitic Carbon Nitride for High-Performance Anode in Sodium Ion Battery
Pengsheng Zhou, Linquan Hou, Ting Song, Xianyou Wang, Jinhui Yang, Xiongwei Wu, Bei Long, Yuping Wu
Abstract
Owing to low cost and high theoretical capacity, g-C3N4 is known as the potential anode in sodium ion battery. However, its poor electronic conductivity and structural stability hinder its actual performance. Here, a simple gel coating–calcination method is used to get a g-C3N4@carbon composite (CCN). Benefiting from the increased pyridinic-N content and electronic conductivity and the fluffy and porous structure, CCN shows a high discharge capacity of 250/183 mAh g–1 at 0.1/3 A g–1 and a long-term cycling performance with 180 mAh g–1 over 1600 cycles at 0.5 A g–1. Moreover, a CCN//Na3V2(PO4)3 full battery exhibits good cycling stability.
Topics & Concepts
AnodeCalcinationSodium-ion batteryMaterials scienceBattery (electricity)Composite numberGraphitic carbon nitrideNitrideChemical engineeringCarbon fibersCoatingSodiumPorosityIonConductivityComposite materialElectrodeChemistryLayer (electronics)Faraday efficiencyMetallurgyCatalysisPhotocatalysisPower (physics)EngineeringPhysicsPhysical chemistryBiochemistryQuantum mechanicsOrganic chemistryAdvancements in Battery MaterialsMXene and MAX Phase MaterialsGa2O3 and related materials