Synchronous Manipulation of Ion and Electron Transfer in Wadsley-Roth Phase Ti-Nb Oxides for Fast-Charging Lithium-Ion Batteries.

ABSTRACT: Implementing fast-charging lithium-ion batteries (LIBs) is severely hindered by the issues of Li plating and poor rate capability for conventional graphite anode. Wadsley-Roth phase TiNb₂ O₇ is regarded as a promising anode candidate to satisfy the requirements of fast-charging LIBs. However, the unsatisfactory electrochemical kinetics resulting from sluggish ion and electron transfer still limit its wide applications. Herein, an effective strategy is proposed to synchronously improve the ion and electron transfer of TiNb₂ O₇ by incorporation of oxygen vacancy and N-doped graphene matrix (TNO_{- x} @N-G), which is designed by combination of solution-combustion and electrostatic self-assembly approach. Theoretical calculations d

SUBMITTER: Yang Y 

PROVIDER: S-EPMC8867197 | biostudies-literature | 2022 Feb

REPOSITORIES: biostudies-literature