Nonstoichiometry and Li‐ion transport in lithium zirconate: The role of oxygen vacancies
Abstract
Abstract Understanding Li‐ion migration mechanisms and enhancing Li‐ion transport in Li 2 ZrO 3 ( LZO ) is important to its role as solid absorbent for reversible CO 2 capture at elevated temperatures, as ceramic breeder in nuclear reactors, and as electrode coating in high‐voltage lithium‐ion batteries ( LIB s). Although defect engineering is an effective way to tune the properties of ceramics, the defect structure of LZO is largely unknown. This study reports the defect structure and electrical properties of undoped LZO and a series of cation‐doped LZO s: (i) depending on their charge states, cation dopants can control the oxygen vacancy concentration in doped LZO s; (ii) the doped LZO s with higher oxygen vacancy concentrations exhibit better Li + conductivity, and consequently faster high‐temperature CO 2 absorption. In fact, the Fe ( II )‐doped LZO shows the highest Li‐ion conductivity reported for LZO s, reaching 3.3 mS /cm at ~300°C that is more than 1 order of magnitude higher than that of the undoped LZO .
- Authors:
-
[1];
- Department of Chemical and Materials Engineering University of Kentucky Lexington Kentucky
- Publication Date:
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1433440
- Resource Type:
- Publisher's Accepted Manuscript
- Journal Name:
- Journal of the American Ceramic Society
- Additional Journal Information:
- Journal Name: Journal of the American Ceramic Society Journal Volume: 101 Journal Issue: 9; Journal ID: ISSN 0002-7820
- Publisher:
- Wiley-Blackwell
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Zhan, Xiaowen, Cheng, Yang‐Tse, and Shirpour, Mona. Nonstoichiometry and Li‐ion transport in lithium zirconate: The role of oxygen vacancies. United States: N. p., 2018.
Web. doi:10.1111/jace.15583.
Zhan, Xiaowen, Cheng, Yang‐Tse, & Shirpour, Mona. Nonstoichiometry and Li‐ion transport in lithium zirconate: The role of oxygen vacancies. United States. https://doi.org/10.1111/jace.15583
Zhan, Xiaowen, Cheng, Yang‐Tse, and Shirpour, Mona. Tue .
"Nonstoichiometry and Li‐ion transport in lithium zirconate: The role of oxygen vacancies". United States. https://doi.org/10.1111/jace.15583.
@article{osti_1433440,
title = {Nonstoichiometry and Li‐ion transport in lithium zirconate: The role of oxygen vacancies},
author = {Zhan, Xiaowen and Cheng, Yang‐Tse and Shirpour, Mona},
abstractNote = {Abstract Understanding Li‐ion migration mechanisms and enhancing Li‐ion transport in Li 2 ZrO 3 ( LZO ) is important to its role as solid absorbent for reversible CO 2 capture at elevated temperatures, as ceramic breeder in nuclear reactors, and as electrode coating in high‐voltage lithium‐ion batteries ( LIB s). Although defect engineering is an effective way to tune the properties of ceramics, the defect structure of LZO is largely unknown. This study reports the defect structure and electrical properties of undoped LZO and a series of cation‐doped LZO s: (i) depending on their charge states, cation dopants can control the oxygen vacancy concentration in doped LZO s; (ii) the doped LZO s with higher oxygen vacancy concentrations exhibit better Li + conductivity, and consequently faster high‐temperature CO 2 absorption. In fact, the Fe ( II )‐doped LZO shows the highest Li‐ion conductivity reported for LZO s, reaching 3.3 mS /cm at ~300°C that is more than 1 order of magnitude higher than that of the undoped LZO .},
doi = {10.1111/jace.15583},
journal = {Journal of the American Ceramic Society},
number = 9,
volume = 101,
place = {United States},
year = {Tue Apr 17 00:00:00 EDT 2018},
month = {Tue Apr 17 00:00:00 EDT 2018}
}
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