Li<sub>2</sub>NiO<sub>2</sub>F a New Oxyfluoride Disordered Rocksalt Cathode Material
Xiaoyu Xu, Liquan Pi, John‐Joseph Marie, Gregory J. Rees, Chen Gong, Shengda D. Pu, Robert A. House, Alexander W. Robertson, Peter G. Bruce
Abstract
Lithium-rich disordered rocksalts such as Li 1.3 Nb 0.3 Mn 0.4 O 2 and Li 2 MnO 2 F are being investigated as high energy density cathodes for next generation Li-ion batteries. They can support the (de) lithiation of lithium ions over large compositional ranges while preserving the same overall structure. Here, we present a new Ni-rich oxyfluoride cathode, Li 2 NiO 2 F, with a disordered rocksalt structure. Li 2 NiO 2 F and can deliver a discharge capacity of 200 mAh g −1 at an average voltage of 3.2 V.
Topics & Concepts
Non-blocking I/OCathodeLithium (medication)Materials scienceIonChemistryPhysical chemistryCatalysisBiochemistryEndocrinologyMedicineOrganic chemistryAdvancements in Battery MaterialsAdvanced Battery Materials and TechnologiesSupercapacitor Materials and Fabrication