Enabling high energy density Li-ion batteries through Li2O activation

Ali Abouimrane; Yanjie Cui; Zonghai Chen; Ilias Belharouak; Hamdi B. Yahia; Huiming Wu; Rajeev Assary; Larry A. Curtiss; Khalil Amine

doi:10.1016/j.nanoen.2016.06.050

Enabling high energy density Li-ion batteries through Li₂O activation

Ali Abouimrane, Yanjie Cui, Zonghai Chen, Ilias Belharouak, Hamdi B. Yahia, Huiming Wu, Rajeev Assary, Larry A. Curtiss, Khalil Amine

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

83 Scopus citations

Abstract

Lithium oxide (Li₂O) is activated in the presence of a layered composite cathode material (HEM) significantly increasing the energy density of lithium-ion batteries. The degree of activation depends on the current rate, electrolyte salt, and anode type. In full-cell tests, the Li₂O was used as a lithium source to counter the first-cycle irreversibility of high-capacity composite alloy anodes. When Li₂O is mixed with HEM to serve as a cathode, the electrochemical performance was improved in a full cell having an SiO-SnCoC composite as an anode. The mechanism behind the Li₂O activation could also explain the first charge plateau and the abnormal high capacity associated with these high energy cathode materials.

Original language	English
Pages (from-to)	196-201
Number of pages	6
Journal	Nano Energy
Volume	27
DOIs	https://doi.org/10.1016/j.nanoen.2016.06.050
State	Published - Sep 1 2016
Externally published	Yes

Funding

This work was supported by the US Department of Energy under contract DE-AC02-06CH11357 from the Vehicle Technologies Office, Department of Energy, Office of Energy Efficiency and Renewable Energy. We thank Dr. Ren for part of the high energy XRD data collection, and Polzin and Trask from Argonne Cell Fabrication Facility for providing LTO electrodes.

Funders	Funder number
US Department of Energy	DE-AC02-06CH11357
U.S. Department of Energy
Office of Energy Efficiency and Renewable Energy

Keywords

First cycle irreversibility
High energy composite cathode material
LiO activation

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.nanoen.2016.06.050

Cite this

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title = "Enabling high energy density Li-ion batteries through Li2O activation",

abstract = "Lithium oxide (Li2O) is activated in the presence of a layered composite cathode material (HEM) significantly increasing the energy density of lithium-ion batteries. The degree of activation depends on the current rate, electrolyte salt, and anode type. In full-cell tests, the Li2O was used as a lithium source to counter the first-cycle irreversibility of high-capacity composite alloy anodes. When Li2O is mixed with HEM to serve as a cathode, the electrochemical performance was improved in a full cell having an SiO-SnCoC composite as an anode. The mechanism behind the Li2O activation could also explain the first charge plateau and the abnormal high capacity associated with these high energy cathode materials.",

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AU - Abouimrane, Ali

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AU - Chen, Zonghai

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AU - Yahia, Hamdi B.

AU - Wu, Huiming

AU - Assary, Rajeev

AU - Curtiss, Larry A.

AU - Amine, Khalil

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AB - Lithium oxide (Li2O) is activated in the presence of a layered composite cathode material (HEM) significantly increasing the energy density of lithium-ion batteries. The degree of activation depends on the current rate, electrolyte salt, and anode type. In full-cell tests, the Li2O was used as a lithium source to counter the first-cycle irreversibility of high-capacity composite alloy anodes. When Li2O is mixed with HEM to serve as a cathode, the electrochemical performance was improved in a full cell having an SiO-SnCoC composite as an anode. The mechanism behind the Li2O activation could also explain the first charge plateau and the abnormal high capacity associated with these high energy cathode materials.

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