Unravelling structural ambiguities in lithium- and manganese-rich transition metal oxides
Abstract
Although Li- and Mn-rich transition metal oxides have been extensively studied as high-capacity cathode materials for Li-ion batteries, the crystal structure of these materials in their pristine state is not yet fully understood. Here we apply complementary electron microscopy and spectroscopy techniques at multi-length scale on well-formed Li 1.2 (Ni 0.13 Mn 0.54 Co 0.13)O 2 crystals with two different morphologies as well as two commercially available materials with similar compositions, and unambiguously describe the structural make-up of these samples. Systematically observing the entire primary particles along multiple zone axes reveals that they are consistently made up of a single phase, save for rare localized defects and a thin surface layer on certain crystallographic facets. More specifically, we show the bulk of the oxides can be described as an aperiodic crystal consisting of randomly stacked domains that correspond to three variants of monoclinic structure, while the surface is composed of a Co- and/or Ni-rich spinel with antisite defects.
- Authors:
-
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- SciTech Daresbury Campus, Daresbury (United Kingdom). SuperSTEM Laboratory
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V); USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1256042
- Alternate Identifier(s):
- OSTI ID: 1378613
- Grant/Contract Number:
- AC02-05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nature Communications
- Additional Journal Information:
- Journal Volume: 6; Journal ID: ISSN 2041-1723
- Publisher:
- Nature Publishing Group
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Shukla, Alpesh Khushalchand, Ramasse, Quentin M., Ophus, Colin, Duncan, Hugues, Hage, Fredrik, and Chen, Guoying. Unravelling structural ambiguities in lithium- and manganese-rich transition metal oxides. United States: N. p., 2015.
Web. doi:10.1038/ncomms9711.
Shukla, Alpesh Khushalchand, Ramasse, Quentin M., Ophus, Colin, Duncan, Hugues, Hage, Fredrik, & Chen, Guoying. Unravelling structural ambiguities in lithium- and manganese-rich transition metal oxides. United States. https://doi.org/10.1038/ncomms9711
Shukla, Alpesh Khushalchand, Ramasse, Quentin M., Ophus, Colin, Duncan, Hugues, Hage, Fredrik, and Chen, Guoying. Thu .
"Unravelling structural ambiguities in lithium- and manganese-rich transition metal oxides". United States. https://doi.org/10.1038/ncomms9711. https://www.osti.gov/servlets/purl/1256042.
@article{osti_1256042,
title = {Unravelling structural ambiguities in lithium- and manganese-rich transition metal oxides},
author = {Shukla, Alpesh Khushalchand and Ramasse, Quentin M. and Ophus, Colin and Duncan, Hugues and Hage, Fredrik and Chen, Guoying},
abstractNote = {Although Li- and Mn-rich transition metal oxides have been extensively studied as high-capacity cathode materials for Li-ion batteries, the crystal structure of these materials in their pristine state is not yet fully understood. Here we apply complementary electron microscopy and spectroscopy techniques at multi-length scale on well-formed Li 1.2 (Ni 0.13 Mn 0.54 Co 0.13)O 2 crystals with two different morphologies as well as two commercially available materials with similar compositions, and unambiguously describe the structural make-up of these samples. Systematically observing the entire primary particles along multiple zone axes reveals that they are consistently made up of a single phase, save for rare localized defects and a thin surface layer on certain crystallographic facets. More specifically, we show the bulk of the oxides can be described as an aperiodic crystal consisting of randomly stacked domains that correspond to three variants of monoclinic structure, while the surface is composed of a Co- and/or Ni-rich spinel with antisite defects.},
doi = {10.1038/ncomms9711},
journal = {Nature Communications},
number = ,
volume = 6,
place = {United States},
year = {Thu Oct 29 00:00:00 EDT 2015},
month = {Thu Oct 29 00:00:00 EDT 2015}
}
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