β-FeOOH: a new anode for potassium-ion batteries
Xiaodong Shi, Liping Qin, Guofu Xu, Shan Guo, Shu-ci MA, Yunxiang Zhao, Jiang Zhou, Shuquan Liang
Abstract
Potassium-ion batteries (PIBs) hold great potential in large-scale energy storage systems. Here, β-FeOOH is employed as an anode for PIBs, exhibiting high capacity and good cycling stability. The study of potassium storage mechanism discloses that β-FeOOH turns into an amorphous structure in the first discharge process, and remains stable in the amorphous state in the subsequent cycles.
Topics & Concepts
AnodePotassiumAmorphous solidIonMaterials scienceEnergy storageChemical engineeringChemistryMetallurgyThermodynamicsElectrodePower (physics)CrystallographyPhysical chemistryOrganic chemistryEngineeringPhysicsAdvancements in Battery MaterialsAdvanced battery technologies researchAdvanced Battery Materials and Technologies