Journal
ELECTROCHIMICA ACTA
Volume 306, Issue -, Pages 498-505Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2019.03.074
Keywords
Solid-state electrolyte; Lithium-ion battery; All-solid-state battery; Antiperovskite; Lithium halide
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Funding
- National Aeronautics and Space Administration (NASA) EPSCoR program, United States [NNX14AN22A]
- NASA Glenn Research Center, United States
- DOD NAVAIR SBIR, United States [N68335-17-C-0016, N68335-18-C-0021]
- NSF IUCRC planning grant Center for Green Solid-State Electric Power Generation and Storage (CEPS), United States
- NASA [677098, NNX14AN22A] Funding Source: Federal RePORTER
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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 Li3ClO 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 degrees C. The electrochemical cells with lithium metal as a reference electrode demonstrated linear Arrhenius behavior in the temperature range of 25-100 degrees C confirming the absence of phase transformations. Cyclic voltammetry at 50 degrees C and 100 degrees 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 degrees C and 1/5 C-rate. Transport of lithium ions between the lithium metal and Li3ClO electrolyte in contact with a graphite working electrode provides evidence that lithium halide antiperovskites can serve as effective and electro-chemically stable electrolytes for a new generation of all-solid-state lithium-ion or lithium metal batteries. Published by Elsevier Ltd.
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