What is it about?

Lithium-ion conductivity is important for solid electrolytes. We have used lithium zirconate as a example to show how one can improve the Li-ion conductivity by creating more oxygen vacancies through cation doping. The improvement in ion transport also leads to faster carbon dioxide absorption.

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Why is it important?

This idea of tuning Li-ion conducive by increasing oxygen vacancies rather than merely manipulating lithium stoichiometry, while largely overlooked, can be very valuable to delevop better solid electrolytes for many applications like all-solid-state Li-ion batteries.

Perspectives

I hope this simple example of how defect chemistry affects Li-ion transport can bring attentions to the long overlooked oxygen vacancies in Li-based oxides.

Xiaowen Zhan
University of Kentucky

Read the Original

This page is a summary of: Nonstoichiometry and Li-ion transport in lithium zirconate: The role of oxygen vacancies, Journal of the American Ceramic Society, April 2018, Wiley,
DOI: 10.1111/jace.15583.
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