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First Evidence of Manganese–Nickel Segregation and Densification upon Cycling in Li-Rich Layered Oxides for Lithium Batteries
Abstract
Lithium-rich manganese-based layered oxides Li[Li(x)Mn(y)TM(1-x-y)]O2 with TM standing for Ni, Co, or Fe are of great interest as cathode materials for lithium ion batteries. Indeed, among all of the materials, they offer the highest rechargeable capacity and energy density. However, when used, they suffer from complex evolutions that need to be understood before their practical use. Here we report on such evolutions studied using advanced transmission electron microscopy. Structural modifications are directly observed at the atomic scale using Cs corrected STEM HAADF imaging technique, and the chemical modifications are probed by the means of STEM EELS experiments. For the first time, segregation between nickel and manganese close the particle surface is pointed out. Finally, observed evolutions are correlated within a proposed mechanism that leads to the densification of the material. Our results allow understanding the link between the decrease of electrochemical performance and these evolutions occurring into the material upon cycling.
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Armand, M., & Tarascon, J.-M. (2008) · Nature · doi:10.1038/451652a · Cited by 19,612
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Ma, Y., Ma, Y., Wang, Q., Schweidler, S., Botros, M., Fu, T., Hahn, H., Brezesinski, T., & Breitung, B. (2021) · Energy & Environmental Science · doi:10.1039/d1ee00505g · Cited by 963
Li‐ and Mn‐Rich Cathode Materials: Challenges to Commercialization
Zheng, J., Myeong, S., Cho, W., Yan, P., Xiao, J., Wang, C., Cho, J., & Zhang, J. (2017) · Advanced Energy Materials · doi:10.1002/aenm.201601284 · Cited by 513
Zuo, W., Luo, M., Liu, X., Wu, J., Liu, H., Li, J., Winter, M., Fu, R., Yang, W., & Yang, Y. (2020) · Energy & Environmental Science · doi:10.1039/d0ee01694b · Cited by 429
Singer, A., Zhang, M., Hy, S., Cela, D., Fang, C., Wynn, T. A., Qiu, B., Xia, Y., Liu, Z., Ulvestad, A., et al. (2018) · Nature Energy · doi:10.1038/s41560-018-0184-2 · Cited by 423
Structural and Chemical Evolution of Li- and Mn-Rich Layered Cathode Material
Zheng, J., Xu, P., Gu, M., Xiao, J., Browning, N. D., Yan, P., Wang, C., & Zhang, J.-G. (2015) · Chemistry of Materials · doi:10.1021/cm5045978 · Cited by 405
Metadata
- Authors
- Boulineau, A., Simonin, L., Colin, J.-F., Bourbon, C., & Patoux, S.
- Venue
- Nano Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2013-07-31
- Volume
- 13
- Issue
- 8
- Pages
- 3857-3863
- ISSN
- 1530-6984 (ISSN-L)
- 1530-6992
- OpenAlex
- W2319146961
- Cited by
- 467
- References
- 1
- FWCI
- 25.16
- Type
- journal article
- Language
- en
- Open access
- closed
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