Intrinsic surface stability in LiMn 2-xNi xO 4-δ (x = 0.45, 0.5) high voltage spinel materials for lithium ion batteries

Kyler J. Carroll; Ming Che Yang; Gabriel M. Veith; Nancy J. Dudney; Ying Shirley Meng

doi:10.1149/2.008206esl

Intrinsic surface stability in LiMn _2-xNi _xO _4-δ (x = 0.45, 0.5) high voltage spinel materials for lithium ion batteries

Kyler J. Carroll, Ming Che Yang, Gabriel M. Veith, Nancy J. Dudney, Ying Shirley Meng

Energy Storage & Conversion

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Abstract

This work reports the surface stability of the high voltage Li ion cathode LiMn _2-xNi _xO _4-δ (x = 0.5, 0.45) by comparing thin film and powder composite electrodes after cycling using X-ray photoelectron spectroscopy. The thin film electrodes offer the ability to probe the surface of the material without the need of a conductive agent and polymer binder typically used in composite electrodes. The results suggest that neither oxidation of PF ₆ to POF ₃ nor the decomposition of ethylene carbonate or dimethylene carbonate occurs on the surface of the spinel material. These results confirm the enhanced cycling stability and rate capability associated with the high voltage spinel material and suggests that the SEI layer forms due to the reaction of electrochemically inactive components in composite electrodes with the electrolyte.

Original language	English
Pages (from-to)	A72-A75
Journal	Electrochemical and Solid-State Letters
Volume	15
Issue number	5
DOIs	https://doi.org/10.1149/2.008206esl
State	Published - 2012

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title = "Intrinsic surface stability in LiMn 2-xNi xO 4-δ (x = 0.45, 0.5) high voltage spinel materials for lithium ion batteries",

abstract = "This work reports the surface stability of the high voltage Li ion cathode LiMn 2-xNi xO 4-δ (x = 0.5, 0.45) by comparing thin film and powder composite electrodes after cycling using X-ray photoelectron spectroscopy. The thin film electrodes offer the ability to probe the surface of the material without the need of a conductive agent and polymer binder typically used in composite electrodes. The results suggest that neither oxidation of PF 6 to POF 3 nor the decomposition of ethylene carbonate or dimethylene carbonate occurs on the surface of the spinel material. These results confirm the enhanced cycling stability and rate capability associated with the high voltage spinel material and suggests that the SEI layer forms due to the reaction of electrochemically inactive components in composite electrodes with the electrolyte.",

author = "Carroll, {Kyler J.} and Yang, {Ming Che} and Veith, {Gabriel M.} and Dudney, {Nancy J.} and Meng, {Ying Shirley}",

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journal = "Electrochemical and Solid-State Letters",

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T1 - Intrinsic surface stability in LiMn 2-xNi xO 4-δ (x = 0.45, 0.5) high voltage spinel materials for lithium ion batteries

AU - Carroll, Kyler J.

AU - Yang, Ming Che

AU - Veith, Gabriel M.

AU - Dudney, Nancy J.

AU - Meng, Ying Shirley

PY - 2012

Y1 - 2012

N2 - This work reports the surface stability of the high voltage Li ion cathode LiMn 2-xNi xO 4-δ (x = 0.5, 0.45) by comparing thin film and powder composite electrodes after cycling using X-ray photoelectron spectroscopy. The thin film electrodes offer the ability to probe the surface of the material without the need of a conductive agent and polymer binder typically used in composite electrodes. The results suggest that neither oxidation of PF 6 to POF 3 nor the decomposition of ethylene carbonate or dimethylene carbonate occurs on the surface of the spinel material. These results confirm the enhanced cycling stability and rate capability associated with the high voltage spinel material and suggests that the SEI layer forms due to the reaction of electrochemically inactive components in composite electrodes with the electrolyte.

AB - This work reports the surface stability of the high voltage Li ion cathode LiMn 2-xNi xO 4-δ (x = 0.5, 0.45) by comparing thin film and powder composite electrodes after cycling using X-ray photoelectron spectroscopy. The thin film electrodes offer the ability to probe the surface of the material without the need of a conductive agent and polymer binder typically used in composite electrodes. The results suggest that neither oxidation of PF 6 to POF 3 nor the decomposition of ethylene carbonate or dimethylene carbonate occurs on the surface of the spinel material. These results confirm the enhanced cycling stability and rate capability associated with the high voltage spinel material and suggests that the SEI layer forms due to the reaction of electrochemically inactive components in composite electrodes with the electrolyte.

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DO - 10.1149/2.008206esl

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VL - 15

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JO - Electrochemical and Solid-State Letters

JF - Electrochemical and Solid-State Letters

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ER -

Intrinsic surface stability in LiMn _2-xNi _xO _4-δ (x = 0.45, 0.5) high voltage spinel materials for lithium ion batteries

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