The DOI matches its Crossref record; 24 of the 24 references it cites were found in a registry or an index.
Chemical and Morphological Changes of Li–O2 Battery Electrodes upon Cycling
Abstract
We report considerable chemical and morphological changes of reaction products in binder-free, vertically aligned carbon nanotube (VACNT) electrodes during Li–O 2 battery cycling with a 1,2-dimethoxyethane (DME)-based electrolyte. X-ray absorption near edge structure (XANES) of discharged oxygen electrodes shows direct evidence for the formation of Li 2 CO 3 -like species at the interface between VACNTs and Li 2 O 2 but not significantly on the Li 2 O 2 surfaces exposed to the electrolyte. Although Li 2 O 2 and Li 2 CO 3 -like species were largely removed upon first charge, the oxidation kinetics became increasingly difficult during Li–O 2 cycling, which is accompanied by the accumulation of Li 2 CO 3 in the discharged and charged electrodes as evidenced by selected area electron diffraction (SAED) and transmission electron microscopy (TEM). Together, these results indicate that the irreversibility during Li–O 2 cycling in DME can be attributed largely to the growth of Li 2 CO 3 -like species associated with the reactivity between carbon and Li 2 O 2 or other reaction intermediates.
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Metadata
- Authors
- Gallant, B. M., Mitchell, R. R., Kwabi, D. G., Zhou, J., Zuin, L., Thompson, C. V., & Shao-Horn, Y.
- Venue
- The Journal of Physical Chemistry C
- Publisher
- American Chemical Society (ACS)
- Published
- 2012-09-25
- Volume
- 116
- Issue
- 39
- Pages
- 20800-20805
- ISSN
- 1932-7447 (ISSN-L)
- 1932-7455
- OpenAlex
- W2316519985
- Cited by
- 382
- References
- 24
- FWCI
- 37.44
- Type
- journal article
- Language
- en
- Open access
- closed
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