Co-Modification of commercial TiO₂ anode by combining a solid electrolyte with pitch-derived carbon to boost cyclability and rate capabilities.

ABSTRACT: The bad electrochemical performance circumscribes the application of commercial TiO₂ (c-TiO₂) anodes in Li-ion batteries. Carbon coating could ameliorate the electronic conductivity of TiO₂, but the ionic conductivity is still inferior. Herein, a co-modification method was proposed by combining the solid electrolyte of lithium magnesium silicate (LMS) with pitch-derived carbon to concurrently meliorate the electronic and ionic conductivities of c-TiO₂. The homogeneous mixtures were heated at 750 °C, and the co-modified product with suitable amounts of LMS and carbon demonstrates cycling capacities of 256.8, 220.4, 195.9, 176.4, and 152.0 mA h g^-1 with multiplying current density from 100 to 1600 mA g^-1. Even after 1000 cycle

SUBMITTER: Kong LY 

PROVIDER: S-EPMC9418347 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature