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Hierarchical surface atomic structure of a manganese-based spinel cathode for lithium-ion batteries.
Angew Chem Int Ed Engl. 2015 Jan 19; 54(4):1153-8.AC

Abstract

The increasing use of lithium-ion batteries (LIBs) in high-power applications requires improvement of their high-temperature electrochemical performance, including their cyclability and rate capability. Spinel lithium manganese oxide (LiMn2O4) is a promising cathode material because of its high stability and abundance. However, it exhibits poor cycling performance at high temperatures owing to Mn dissolution. Herein we show that when stoichiometric lithium manganese oxide is coated with highly doped spinels, the resulting epitaxial coating has a hierarchical atomic structure consisting of cubic-spinel, tetragonal-spinel, and layered structures, and no interfacial phase is formed. In a practical application of the coating to doped spinel, the material retained 90% of its capacity after 800 cycles at 60 °C. Thus, the formation of an epitaxial coating with a hierarchical atomic structure could enhance the electrochemical performance of LIB cathode materials while preventing large losses in capacity.

Authors+Show Affiliations

School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), 689-798, Ulsan (Republic of Korea).No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

25470462

Citation

Lee, Sanghan, et al. "Hierarchical Surface Atomic Structure of a Manganese-based Spinel Cathode for Lithium-ion Batteries." Angewandte Chemie (International Ed. in English), vol. 54, no. 4, 2015, pp. 1153-8.
Lee S, Yoon G, Jeong M, et al. Hierarchical surface atomic structure of a manganese-based spinel cathode for lithium-ion batteries. Angew Chem Int Ed Engl. 2015;54(4):1153-8.
Lee, S., Yoon, G., Jeong, M., Lee, M. J., Kang, K., & Cho, J. (2015). Hierarchical surface atomic structure of a manganese-based spinel cathode for lithium-ion batteries. Angewandte Chemie (International Ed. in English), 54(4), 1153-8. https://doi.org/10.1002/anie.201408853
Lee S, et al. Hierarchical Surface Atomic Structure of a Manganese-based Spinel Cathode for Lithium-ion Batteries. Angew Chem Int Ed Engl. 2015 Jan 19;54(4):1153-8. PubMed PMID: 25470462.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Hierarchical surface atomic structure of a manganese-based spinel cathode for lithium-ion batteries. AU - Lee,Sanghan, AU - Yoon,Gabin, AU - Jeong,Minseul, AU - Lee,Min-Joon, AU - Kang,Kisuk, AU - Cho,Jaephil, Y1 - 2014/12/03/ PY - 2014/09/05/received PY - 2014/11/06/revised PY - 2014/12/4/entrez PY - 2014/12/4/pubmed PY - 2014/12/4/medline KW - cathodes KW - epitaxial coating KW - hierarchical atomic structures KW - lithium manganese oxide KW - lithium-ion batteries SP - 1153 EP - 8 JF - Angewandte Chemie (International ed. in English) JO - Angew. Chem. Int. Ed. Engl. VL - 54 IS - 4 N2 - The increasing use of lithium-ion batteries (LIBs) in high-power applications requires improvement of their high-temperature electrochemical performance, including their cyclability and rate capability. Spinel lithium manganese oxide (LiMn2O4) is a promising cathode material because of its high stability and abundance. However, it exhibits poor cycling performance at high temperatures owing to Mn dissolution. Herein we show that when stoichiometric lithium manganese oxide is coated with highly doped spinels, the resulting epitaxial coating has a hierarchical atomic structure consisting of cubic-spinel, tetragonal-spinel, and layered structures, and no interfacial phase is formed. In a practical application of the coating to doped spinel, the material retained 90% of its capacity after 800 cycles at 60 °C. Thus, the formation of an epitaxial coating with a hierarchical atomic structure could enhance the electrochemical performance of LIB cathode materials while preventing large losses in capacity. SN - 1521-3773 UR - https://www.unboundmedicine.com/medline/citation/25470462/Hierarchical_surface_atomic_structure_of_a_manganese_based_spinel_cathode_for_lithium_ion_batteries_ L2 - https://doi.org/10.1002/anie.201408853 DB - PRIME DP - Unbound Medicine ER -
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