The DOI matches its Crossref record; 14 of the 14 references it cites were found in a registry or an index.
Effect of Residual Lithium Compounds on Layer Ni-Rich Li[Ni0.7Mn0.3]O2
Open accessAbstract
In order to confirm reasons that deteriorate cathode performances, Ni-rich Li[Ni 0.7 Mn 0.3 ]O 2 is modified by lithium isopropoxide to artificially provide lithium excess environment by forming Li 2 O on the surface of active materials. X-ray diffraction patterns indicate that the lithium oxide coating does not affect structural change comparing to the bare material. Scanning electron microscopy and transmission electron microscopy data show the presence of coating layers on the surface of Li[Ni 0.7 Mn 0.3 ]O 2 . Electrochemical tests demonstrate that the Li 2 O-coated Li[Ni 0.7 Mn 0.3 ]O 2 exhibits a greater irreversible capacity with a small capacity because of the presence of insulating layers composed of lithium compounds on the active materials since these layers delay facile Li + diffusion. Also, the Li 2 O layer forms byproducts such as Li 2 CO 3 , LiOH, and LiF, as are proved by X-ray photoelectron spectroscopy and time-of-flight secondary ion mass spectrometry. The presence of residual lithium tends to bond with hydrocarbons induced from decomposition of electrolytic salt during electrochemical reactions. And the reaction, accelerated by the decomposition of electrolytic salt that produces the byproducts, causes the formation of passive layers on the surface of active material. As a result, the new layers consequently impede diffusion of lithium ions that deteriorate electrochemical properties.
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Cites
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Jiang, M., Danilov, D. L., Eichel, R., & Notten, P. H. L. (2021) · Advanced Energy Materials · doi:10.1002/aenm.202103005 · Cited by 720
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Self-citationReducing cobalt from lithium-ion batteries for the electric vehicle era
Ryu, H.-H., Sun, H. H., Myung, S.-T., Yoon, C. S., & Sun, Y.-K. (2021) · Energy & Environmental Science · doi:10.1039/d0ee03581e · Cited by 331
Self-citationCobalt‐Free High‐Capacity Ni‐Rich Layered Li[Ni0.9Mn0.1]O2 Cathode
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Metadata
- Authors
- Cho, D.-H., Jo, C.-H., Cho, W., Kim, Y.-J., Yashiro, H., Sun, Y.-K., & Myung, S.-T.
- Venue
- Journal of The Electrochemical Society
- Publisher
- The Electrochemical Society
- Published
- 2014
- Volume
- 161
- Issue
- 6
- Pages
- A920-A926
- ISSN
- 0013-4651 (ISSN-L)
- 1945-7111
- OpenAlex
- W1973932973
- Cited by
- 340
- References
- 14
- FWCI
- 6.72
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Cho, D.-H., Jo, C.-H., Cho, W., Kim, Y.-J., Yashiro, H., Sun, Y.-K., & Myung, S.-T. (2014). Effect of Residual Lithium Compounds on Layer Ni-Rich Li[Ni0.7Mn0.3]O2. Journal of The Electrochemical Society. https://doi.org/10.1149/2.042406jes
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