A cooperative biphasic MoO_x-MoP_x promoter enables a fast-charging lithium-ion battery.

ABSTRACT: The realisation of fast-charging lithium-ion batteries with long cycle lifetimes is hindered by the uncontrollable plating of metallic Li on the graphite anode during high-rate charging. Here we report that surface engineering of graphite with a cooperative biphasic MoO_x-MoP_x promoter improves the charging rate and suppresses Li plating without compromising energy density. We design and synthesise MoO_x-MoP_x/graphite via controllable and scalable surface engineering, i.e., the deposition of a MoO_x nanolayer on the graphite surface, followed by vapour-induced partial phase transformation of MoO_x to MoP_x. A variety of analytical studies combined with thermodynamic calculations demonstrate that MoO_x effecti

SUBMITTER: Lee SM 

PROVIDER: S-EPMC7782533 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature