The role of sodium in the electrochemical tuning of Li₂TiSiO₅ anodes across ceramic and glass phases.

ABSTRACT: This study investigates the enhancement of Li₂TiSiO₅ anode material through Na doping via two routes: melt-quenching (route I) and subsequent heat treatment (route II). A 5 % Na-doped ceramic sample significantly improves Li-ion mobility and discharge capacity (215 mA h g^-1 at 10 mA g^-1), sustaining 45 mA h g^-1 at a high rate of 1 A g^-1. However, higher doping levels hinder performance, indicating Li-ion path obstruction and non-conductive impurities. Intriguingly, undoped Li₂TiSiO₅ glass exhibits superior electrochemical performance, with a discharge capacity of 340 mA h g^-1 at 10 mA g^-1 and high-rate endurance (81 mA h g^-1 at 1 A g^-1). This research provides

SUBMITTER: Khejonrak A 

PROVIDER: S-EPMC11532238 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature