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Updated: Mar 12, 2026

Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature
Published on: December 20, 2016
High temperature investigation of electrochemical lithium insertion into Li4Ti5O12
Isaac M Markus1, Marco Prill2, Siaufung Dang2
1University of California, Berkeley, Department of Material Science and Engineering, Berkeley, CA, USA. isaac.markus@berkeley.edu.
Abstract:
Li4Ti5O12 was synthesized via a solid state reaction and lithiated at 400 °C in a custom built galvanostatic cell consisting of a molten LiCl-KCl electrolyte and Li-Al alloy wires as counter and reference electrodes. The material exhibits decreased rate capability at 400 °C compared to the room temperature behavior. Electrochemical lithiation at C/20 exhibits a discharge profile with both a sloping curve and flat plateau, which is indicative of a solid solution behavior before reaching a two phase region. This electrochemical behavior is shown to be correlated with reversible formation of the cubic Li2TiO3 phase.

