Porous Co₂VO₄ Nanodisk as a High-Energy and Fast-Charging Anode for Lithium-Ion Batteries.

ABSTRACT: High-energy-density lithium-ion batteries (LIBs) that can be safely fast-charged are desirable for electric vehicles. However, sub-optimal lithiation potential and low capacity of commonly used LIBs anode cause safety issues and low energy density. Here we hypothesize that a cobalt vanadate oxide, Co₂VO₄, can be attractive anode material for fast-charging LIBs due to its high capacity (~ 1000 mAh g^-1) and safe lithiation potential (~ 0.65 V vs. Li⁺/Li). The Li⁺ diffusion coefficient of Co₂VO₄ is evaluated by theoretical calculation to be as high as 3.15 × 10^-10 cm² s^-1, proving Co₂VO₄ a promising anode in fast-charging LIBs. A hexagonal porous Co₂VO

SUBMITTER: Ren J 

PROVIDER: S-EPMC8639887 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature