Simultaneous Enhancement of Lithium Transfer Kinetics and Structural Stability in Dual-Phase TiO₂ Electrodes by Ruthenium Doping.

ABSTRACT: Dual-phase TiO₂ consisting of bronze and anatase phases is an attractive electrode material for fast-charging lithium-ion batteries due to the unique phase boundaries present. However, further enhancement of its lithium storage performance has been hindered by limited knowledge on the impact of cation doping as an efficient modification strategy. Here, the effects of Ru⁴⁺ doping on the dual-phase structure and the related lithium storage performance are demonstrated for the first time. Structural analysis reveals that an optimized doping ratio of Ru:Ti = 0.01:0.99 (1-RTO) is vital to maintain the dual-phase configuration because the further increment of Ru⁴⁺ fraction would compromise the crystallinity of the bronze phase. Various electrochemical tests and d

SUBMITTER: Zheng J 

PROVIDER: S-EPMC10895577 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature