Environmentally Friendly and Flexible Aqueous Zinc Ion Batteries Using an Organic Anode and Activated Carbon as the Cathode
Ruibai Cang, Ke Ye, Kai Zhu, Dianxue Cao
Abstract
We report an outstanding rate capability of a synthesized polymer, poly(3,4,9,10-perylentetracarboxylic diimide) (PPTCDI), as an anode with activated carbon (AC) as a cathode. The cell PPTCDI||AC shows the highest energy density of 174.3 Wh kg –1 . The electrode PPTCDI provides a superior rate capability of 199.1 mAh g –1 at a 50 mA g –1 current density. A flexible zinc-ion battery is assembled for the first time using AC and PPTCDI in an aqueous ZnSO 4 electrolyte, exhibiting a capacity retention of 95% after 5000 cycles. This work ascertains the feasibility of Zn-ion energy storage and provides a new idea for aqueous battery systems.
Topics & Concepts
AnodeCathodeAqueous solutionElectrolyteBattery (electricity)Environmentally friendlyChemical engineeringMaterials scienceCarbon fibersEnergy storageElectrodeActivated carbonZincCurrent densityChemistryOrganic chemistryComposite materialMetallurgyAdsorptionPhysicsPower (physics)EngineeringQuantum mechanicsBiologyPhysical chemistryEcologyComposite numberAdvanced battery technologies researchSupercapacitor Materials and FabricationAdvanced Battery Materials and Technologies