Electrochemical stability of lithium halide electrolyte with antiperovskite crystal structure

Matthew Dondelinger, Joel Swanson, Golibsho Nasymov, Christopher Jahnke, Qiquan Qiao, James Wu, Christian Widener, Abu Md Numan-Al-Mobin, Alevtina Smirnova

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

The present study is focused on a relatively new class of solid-state lithium halide electrolytes with antiperovskite crystal structure that are designed to alleviate safety concerns related to conventional lithium-ion batteries. The solid-state Li 3 ClO electrolyte membranes were produced by a casting/delamination method and deposited on a graphite-based working electrode. The electrolyte charge transfer resistances, electrochemical performance, and chemical stability in a half-cell configuration were evaluated over a broad temperature range from room temperature up to 100 °C. The electrochemical cells with lithium metal as a reference electrode demonstrated linear Arrhenius behavior in the temperature range of 25–100 °C confirming the absence of phase transformations. Cyclic voltammetry at 50 °C and 100 °C confirms that the electrochemical cell performance during lithiation/delithiation from 0.05 to 1.00 V is reproducible within at least 100 cycles. The solid-state electrolyte electrochemical stability in contact with lithium metal is confirmed for the first time by demonstrating the constant values of charge transfer resistances during charge/discharge operations in 575 cycles at 50 °C and 1/5 C-rate. Transport of lithium ions between the lithium metal and Li 3 ClO electrolyte in contact with a graphite working electrode provides evidence that lithium halide antiperovskites can serve as effective and electrochemically stable electrolytes for a new generation of all-solid-state lithium-ion or lithium metal batteries.

Original languageEnglish (US)
Pages (from-to)498-505
Number of pages8
JournalElectrochimica Acta
Volume306
DOIs
StatePublished - May 20 2019
Externally publishedYes

Keywords

  • All-solid-state battery
  • Antiperovskite
  • Lithium halide
  • Lithium-ion battery
  • Solid-state electrolyte

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Electrochemistry

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