The DOI matches its Crossref record; 35 of the 35 references it cites were found in a registry or an index.
High Performance Li2Ru1–yMnyO3 (0.2 ≤ y ≤ 0.8) Cathode Materials for Rechargeable Lithium-Ion Batteries: Their Understanding
Abstract
Understanding the origin of the high capacity displayed by Li 2 MnO 3 –LiMO 2 (M = Ni, Co) composites is essential for improving their cycling and rate capability performances. To address this issue, the Li 2 Ru 1– y Mn y O 3 series between the iso-structural layered end-members Li 2 MnO 3 and Li 2 RuO 3 was investigated. A complete solid solution was found, with the 0.4 ≤ y ≤ 0.6 members showing sustainable reversible capacities exceeding 220 mAh·g –1 centered around 3.6 V vs Li + /Li. The voltage–composition profiles display a plateau on the first charge as compared to an S-type curve on subsequent discharge which is maintained on the following charges/discharges, with therefore a lowering of the average voltage. We show this profile to evolve upon long cycling due to a structural phase transition as deduced from XRD measurements. Finally we demonstrate, via XPS measurements, the oxidation and reduction of ruthenium (Ru 5+ /Ru 4+ ) during cycling together with a partial activity of the Mn 4+ /Mn 3+ redox couple. Moreover, we provide direct evidence for the reversibility of the O 2– → O – anionic process upon cycling, hence accounting for the high capacity displayed by these materials. This work, by capturing the main redox processes pertaining to these materials, should facilitate their development.
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Metadata
- Authors
- Sathiya, M., Ramesha, K., Rousse, G., Foix, D., Gonbeau, D., Prakash, A. S., Doublet, M. L., Hemalatha, K., & Tarascon, J.-M.
- Venue
- Chemistry of Materials
- Publisher
- American Chemical Society (ACS)
- Published
- 2013-03-22
- Volume
- 25
- Issue
- 7
- Pages
- 1121-1131
- ISSN
- 0897-4756 (ISSN-L)
- 1520-5002
- OpenAlex
- W1968641774
- Cited by
- 405
- References
- 35
- FWCI
- 25.36
- Type
- journal article
- Language
- en
- Open access
- closed
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- Sathiya, M., Ramesha, K., Rousse, G., Foix, D., Gonbeau, D., Prakash, A. S., Doublet, M. L., Hemalatha, K., & Tarascon, J.-M. (2013). High Performance Li2Ru1–yMnyO3 (0.2 ≤ y ≤ 0.8) Cathode Materials for Rechargeable Lithium-Ion Batteries: Their Understanding. Chemistry of Materials. https://doi.org/10.1021/cm400193m
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