Hollow Mesoporous Carbon Spheres for High Performance Symmetrical and Aqueous Zinc-Ion Hybrid Supercapacitor
Sihan Chen, Gaoqi Yang, Xiaojuan Zhao, Nengze Wang, Tingting Luo, Xu Chen, Tianci Wu, Shijie Jiang, Peter A. van Aken, Shile Qu, Tao Li, Liang Du, Jun Zhang, Hanbin Wang, Hao Wang
Abstract
electroplating/stripping on the anode. This device thus demonstrates outstanding electrochemical performance, with high capacity (212.1 F/g at 0.2 A/g), a high energy density (75.4 Wh/kg at 0.16 kW/kg), a good rate performance (34.2 Wh/kg energy density maintained at a high power density of 16.0 kW/kg) and excellent cycling stability with 99.4% capacitance retention after 2,500 cycles at 2 A/g. The engineering of this new configuration provides an extremely safe, high-rate, and durable energy-storage device.
Topics & Concepts
SupercapacitorMaterials scienceAnodePower densityChemical engineeringMesoporous materialElectrolyteCapacitanceEnergy storageCathodeElectrochemistryCarbon fibersAqueous solutionZincSpecific energyAdsorptionElectrodeComposite materialMetallurgyChemistryComposite numberOrganic chemistryPower (physics)CatalysisEngineeringQuantum mechanicsPhysical chemistryPhysicsSupercapacitor Materials and FabricationAdvanced battery technologies researchAdvancements in Battery Materials