A vanadium-based oxide-phosphate-pyrophosphate framework as a 4 V electrode material for K-ion batteries.

ABSTRACT: K-ion batteries (KIBs) are promising for large-scale electrical energy storage owing to the abundant resources and the electrochemical specificity of potassium. Among the positive electrode materials for KIBs, vanadium-based polyanionic materials are interesting because of their high working voltage and good structural stability which dictates the cycle life. In this study, a potassium vanadium oxide phosphate, K₆(VO)₂(V₂O₃)₂(PO₄)₄(P₂O₇), has been investigated as a 4 V class positive electrode material for non-aqueous KIBs. The material is synthesized through pyrolysis of a single metal-organic molecular precursor, K₂[(VOHPO₄)₂(C₂O₄)] at

SUBMITTER: Ohara M 

PROVIDER: S-EPMC8480335 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature