Dynamic imaging of crystalline defects in lithium-manganese oxide electrodes during electrochemical activation to high voltage
Abstract
Crystalline defects are commonly generated in lithium-metal-oxide electrodes during cycling of lithium-ion batteries. Their role in electrochemical reactions is not yet fully understood because, until recently, there has not been an effective operando technique to image dynamic processes at the atomic level. In this study, two types of defects were monitored dynamically during delithiation and concomitant oxidation of oxygen ions by using in situ high-resolution transmission electron microscopy supported by density functional theory calculations. One stacking fault with a fault vector b/6[110] and low mobility contributes minimally to oxygen release from the structure. In contrast, dissociated dislocations with Burgers vector of c/2[001] have high gliding and transverse mobility; they lead to the formation, transport and release subsequently of oxygen related species at the surface of the electrode particles. This work advances the scientific understanding of how oxygen participates and the structural response during the activation process at high potentials.
- Authors:
-
[2];
[3];
[4];
- Wuhan Univ. of Technology, Hubei (China); Shanghai Univ., Shanghai (China); Northwestern Univ., Evanston, IL (United States)
- Northwestern Univ., Evanston, IL (United States); Harvard Univ., Cambridge, MA (United States)
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Northwestern Univ., Evanston, IL (United States)
- Wuhan Univ. of Technology, Hubei (China); Northwestern Univ., Evanston, IL (United States)
- Publication Date:
- Research Org.:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
- OSTI Identifier:
- 1510310
- Grant/Contract Number:
- AC02-06CH11357
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nature Communications
- Additional Journal Information:
- Journal Volume: 10; Journal Issue: 1; Journal ID: ISSN 2041-1723
- Publisher:
- Nature Publishing Group
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Li, Qianqian, Yao, Zhenpeng, Lee, Eungje, Xu, Yaobin, Thackeray, Michael M., Wolverton, Chris, Dravid, Vinayak P., and Wu, Jinsong. Dynamic imaging of crystalline defects in lithium-manganese oxide electrodes during electrochemical activation to high voltage. United States: N. p., 2019.
Web. doi:10.1038/s41467-019-09408-2.
Li, Qianqian, Yao, Zhenpeng, Lee, Eungje, Xu, Yaobin, Thackeray, Michael M., Wolverton, Chris, Dravid, Vinayak P., & Wu, Jinsong. Dynamic imaging of crystalline defects in lithium-manganese oxide electrodes during electrochemical activation to high voltage. United States. doi:10.1038/s41467-019-09408-2.
Li, Qianqian, Yao, Zhenpeng, Lee, Eungje, Xu, Yaobin, Thackeray, Michael M., Wolverton, Chris, Dravid, Vinayak P., and Wu, Jinsong. Fri .
"Dynamic imaging of crystalline defects in lithium-manganese oxide electrodes during electrochemical activation to high voltage". United States. doi:10.1038/s41467-019-09408-2. https://www.osti.gov/servlets/purl/1510310.
@article{osti_1510310,
title = {Dynamic imaging of crystalline defects in lithium-manganese oxide electrodes during electrochemical activation to high voltage},
author = {Li, Qianqian and Yao, Zhenpeng and Lee, Eungje and Xu, Yaobin and Thackeray, Michael M. and Wolverton, Chris and Dravid, Vinayak P. and Wu, Jinsong},
abstractNote = {Crystalline defects are commonly generated in lithium-metal-oxide electrodes during cycling of lithium-ion batteries. Their role in electrochemical reactions is not yet fully understood because, until recently, there has not been an effective operando technique to image dynamic processes at the atomic level. In this study, two types of defects were monitored dynamically during delithiation and concomitant oxidation of oxygen ions by using in situ high-resolution transmission electron microscopy supported by density functional theory calculations. One stacking fault with a fault vector b/6[110] and low mobility contributes minimally to oxygen release from the structure. In contrast, dissociated dislocations with Burgers vector of c/2[001] have high gliding and transverse mobility; they lead to the formation, transport and release subsequently of oxygen related species at the surface of the electrode particles. This work advances the scientific understanding of how oxygen participates and the structural response during the activation process at high potentials.},
doi = {10.1038/s41467-019-09408-2},
journal = {Nature Communications},
number = 1,
volume = 10,
place = {United States},
year = {2019},
month = {4}
}
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