A High‐Performance Zinc–Air Battery Cathode Catalyst from Recycling of Spent Lithium Iron Phosphate Batteries
Kun Luo, Mingquan Zhou, Tong Liu, Tong Liu, Xiangqun Zhuge, Xiaoteng Liu, Xiaoteng Liu, Maryam Bayati, Yurong Ren, Zhihong Luo
Abstract
A novel recycling process of the conductive agent in spent lithium iron phosphate batteries is demonstrated. Wet chemistry is applied in recovering lithium and iron phosphate, and the filter residue is calcined with a small amount of recovered iron phosphate in N 2 at 900 °C to form a FeNP‐codoped carbon catalyst, which exhibits a low half‐wave potential and excellent durability for oxygen reduction. When applied in a rechargeable Zn–air battery, the power density can reach 80 mW cm −2 .
Topics & Concepts
CalcinationPhosphateLithium iron phosphateCatalysisIron phosphateBattery (electricity)CathodeInorganic chemistryMaterials scienceLithium (medication)ZincLithium batteryChemistryNuclear chemistryChemical engineeringElectrodeMetallurgyOrganic chemistryElectrochemistryIonEndocrinologyEngineeringMedicinePhysicsIonic bondingPower (physics)Quantum mechanicsPhysical chemistryAdvanced Battery Materials and TechnologiesAdvancements in Battery MaterialsAdvanced battery technologies research