Improved electrochemical performance of Li1.2Mn 0.54Ni0.13Co0.13O2 by Mg doping for lithium ion battery cathode material

Hongjie Xu; Shengnan Deng; Guohua Chen

doi:10.1039/c4ta01790k

Improved electrochemical performance of Li_1.2Mn _0.54Ni_0.13Co_0.13O₂ by Mg doping for lithium ion battery cathode material

Hongjie Xu, Shengnan Deng, Guohua Chen

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

116 Citations (Scopus)

Abstract

Li-rich, Mn-based layered material is one of the most promising cathode materials for next-generation lithium ion batteries. However, this material is subject to severe capacity fading and poor rate capability. When Li was replaced with Mg, the electrochemical performance of the material improved. Structural and elemental analyses indicate an expansion of the unit cell as a result of Mg doping, while the crystal structure remained unaffected. Higher specific capacity and better rate capability with more stable cycling performance were obtained from a sample of Li_1.17Mg_0.03Mn _0.54Ni_0.13Co_0.13O₂ as compared with other samples that were either Mg-free or with Mg atomic content beyond 0.03. © the Partner Organisations 2014.

Original language	English
Pages (from-to)	15015-15021
Journal	Journal of Materials Chemistry A
Volume	2
Issue number	36
DOIs	https://doi.org/10.1039/c4ta01790k
Publication status	Published - 28 Sept 2014
Externally published	Yes

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Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

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Cite this

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title = "Improved electrochemical performance of Li1.2Mn 0.54Ni0.13Co0.13O2 by Mg doping for lithium ion battery cathode material",

abstract = "Li-rich, Mn-based layered material is one of the most promising cathode materials for next-generation lithium ion batteries. However, this material is subject to severe capacity fading and poor rate capability. When Li was replaced with Mg, the electrochemical performance of the material improved. Structural and elemental analyses indicate an expansion of the unit cell as a result of Mg doping, while the crystal structure remained unaffected. Higher specific capacity and better rate capability with more stable cycling performance were obtained from a sample of Li1.17Mg0.03Mn 0.54Ni0.13Co0.13O2 as compared with other samples that were either Mg-free or with Mg atomic content beyond 0.03. {\textcopyright} the Partner Organisations 2014.",

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AU - Deng, Shengnan

AU - Chen, Guohua

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

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N2 - Li-rich, Mn-based layered material is one of the most promising cathode materials for next-generation lithium ion batteries. However, this material is subject to severe capacity fading and poor rate capability. When Li was replaced with Mg, the electrochemical performance of the material improved. Structural and elemental analyses indicate an expansion of the unit cell as a result of Mg doping, while the crystal structure remained unaffected. Higher specific capacity and better rate capability with more stable cycling performance were obtained from a sample of Li1.17Mg0.03Mn 0.54Ni0.13Co0.13O2 as compared with other samples that were either Mg-free or with Mg atomic content beyond 0.03. © the Partner Organisations 2014.

AB - Li-rich, Mn-based layered material is one of the most promising cathode materials for next-generation lithium ion batteries. However, this material is subject to severe capacity fading and poor rate capability. When Li was replaced with Mg, the electrochemical performance of the material improved. Structural and elemental analyses indicate an expansion of the unit cell as a result of Mg doping, while the crystal structure remained unaffected. Higher specific capacity and better rate capability with more stable cycling performance were obtained from a sample of Li1.17Mg0.03Mn 0.54Ni0.13Co0.13O2 as compared with other samples that were either Mg-free or with Mg atomic content beyond 0.03. © the Partner Organisations 2014.

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