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Li2NiO2F a new oxyfluoride disordered rocksalt cathode material

DOI: 10.1149/1945-7111/ac1be1 DOI Help

Authors: Xiaoyu Xu (University of Oxford) , John-Joseph Marie (University of Oxford) , Gregory J Rees (University of Oxford) , Liquan Pi (University of Oxford) , Chen Gong (University of Oxford) , Shengda Pu (University of Oxford) , Robert A. House (University of Oxford) , Alexander W. Robertson (University of Oxford) , Peter G. Bruce (University of Oxford)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Journal Of The Electrochemical Society

State: Published (Approved)
Published: August 2021

Open Access Open Access

Abstract: Lithium-rich disordered rocksalts such as Li1.3Nb0.3Mn0.4O2 and Li2MnO2F are being investigated as high energy density cathodes for next generation Li-ion batteries. They can support the (de)intercalation of lithium ions over large compositional ranges while preserving the same overall structure. Here, we present a new Ni-rich oxyfluoride cathode, Li2NiO2F, with a disordered rocksalt structure. Li2NiO2F and can deliver a discharge capacity of 200 mAh g-1 at an average voltage of 3.2 V.

Journal Keywords: Batteries – Li-ion; Energy Storage; Solid-State Topics: General

Diamond Keywords: Batteries; Lithium-ion

Subject Areas: Materials, Chemistry, Energy

Instruments: B18-Core EXAFS

Added On: 14/08/2021 21:54

Discipline Tags:

Energy Storage Energy Physical Chemistry Energy Materials Chemistry Materials Science

Technical Tags:

Spectroscopy X-ray Absorption Spectroscopy (XAS) X-ray Absorption Near Edge Structure (XANES)