Li2MnO3-based composite cathodes for lithium batteries: A novel synthesis approach and new structures

J. R. Croy; S. H. Kang; M. Balasubramanian; M. M. Thackeray

doi:10.1016/j.elecom.2011.06.037

Li₂MnO₃-based composite cathodes for lithium batteries: A novel synthesis approach and new structures

J. R. Croy, S. H. Kang, M. Balasubramanian, M. M. Thackeray

Emerging and Solid-State Batteries

Research output: Contribution to journal › Article › peer-review

125 Scopus citations

Abstract

A new, simple technique has been demonstrated for fabricating high-capacity composite electrode structures. In this technique, Li₂MnO ₃ is leached in acid in the presence of soluble transition metal ions and subsequently annealed between 450 and 850 °C. The technique can be used to prepare a wide variety of composite compounds, in particular, a new family of 'layered-rocksalt' xLi₂MnO₃•(1-x)MO (e.g., M = Ni and Co) structures and modifications thereof, as well as 'layered-layered' xLi₂MnO₃•(1-x)LiMO₂ (e.g., M = Mn, Ni, and Co) and 'layered-spinel' xLi₂MnO₃•(1-x)LiM ₂O₄ (e.g., M = Mn and Ni). This novel approach also holds promise for 1) synthesizing materials that reduce the extent of internal phase transitions of composite cathode structures with a high manganese content, and 2) minimizing the extent to which cells need to be electrochemically activated to remove Li₂O, thereby reducing the extent of the irreversible capacity loss on the first charge/discharge cycle.

Original language	English
Pages (from-to)	1063-1066
Number of pages	4
Journal	Electrochemistry Communications
Volume	13
Issue number	10
DOIs	https://doi.org/10.1016/j.elecom.2011.06.037
State	Published - Oct 2011

Funding

The submitted manuscript has been created by UChicago Argonne, LLC, Operator of Argonne National Laboratory (“Argonne”). Argonne, a U.S. Department of Energy Office of Science laboratory, is operated under Contract No. DE-AC02-06CH11357. The U.S. Government retains for itself, and others acting on its behalf, a paid-up, nonexclusive, irrevocable worldwide license in said article to reproduce, prepare derivative works, distribute copies to the public, and perform publicly and display publicly, by or on behalf of the Government. Financial support from the Office of Vehicle Technologies of the U.S. Department of Energy (DOE) is gratefully acknowledged. The X-ray Science Division/Pacific Northwest Consortium (XSD/PNC) facilities at the Advanced Photon Source of Argonne National Laboratory and research at these facilities are supported by the U.S. DOE , Basic Energy Sciences , and National Sciences and Engineering Research Council of Canada and its founding institutions.

Keywords

Cathode
Composite structure
LiMnO
Lithium battery

Access to Document

10.1016/j.elecom.2011.06.037

Cite this

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title = "Li2MnO3-based composite cathodes for lithium batteries: A novel synthesis approach and new structures",

abstract = "A new, simple technique has been demonstrated for fabricating high-capacity composite electrode structures. In this technique, Li2MnO 3 is leached in acid in the presence of soluble transition metal ions and subsequently annealed between 450 and 850 °C. The technique can be used to prepare a wide variety of composite compounds, in particular, a new family of 'layered-rocksalt' xLi2MnO3•(1-x)MO (e.g., M = Ni and Co) structures and modifications thereof, as well as 'layered-layered' xLi2MnO3•(1-x)LiMO2 (e.g., M = Mn, Ni, and Co) and 'layered-spinel' xLi2MnO3•(1-x)LiM 2O4 (e.g., M = Mn and Ni). This novel approach also holds promise for 1) synthesizing materials that reduce the extent of internal phase transitions of composite cathode structures with a high manganese content, and 2) minimizing the extent to which cells need to be electrochemically activated to remove Li2O, thereby reducing the extent of the irreversible capacity loss on the first charge/discharge cycle.",

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AB - A new, simple technique has been demonstrated for fabricating high-capacity composite electrode structures. In this technique, Li2MnO 3 is leached in acid in the presence of soluble transition metal ions and subsequently annealed between 450 and 850 °C. The technique can be used to prepare a wide variety of composite compounds, in particular, a new family of 'layered-rocksalt' xLi2MnO3•(1-x)MO (e.g., M = Ni and Co) structures and modifications thereof, as well as 'layered-layered' xLi2MnO3•(1-x)LiMO2 (e.g., M = Mn, Ni, and Co) and 'layered-spinel' xLi2MnO3•(1-x)LiM 2O4 (e.g., M = Mn and Ni). This novel approach also holds promise for 1) synthesizing materials that reduce the extent of internal phase transitions of composite cathode structures with a high manganese content, and 2) minimizing the extent to which cells need to be electrochemically activated to remove Li2O, thereby reducing the extent of the irreversible capacity loss on the first charge/discharge cycle.

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