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Title: Enabling high energy density Li-ion batteries through Li 2 O activation

Authors:
; ; ; ; ; ; ; ;
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1359606
Grant/Contract Number:
AC02-06CH11357
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Nano Energy
Additional Journal Information:
Journal Volume: 27; Journal Issue: C; Related Information: CHORUS Timestamp: 2017-10-04 16:38:16; Journal ID: ISSN 2211-2855
Publisher:
Elsevier
Country of Publication:
Netherlands
Language:
English

Citation Formats

Abouimrane, Ali, Cui, Yanjie, Chen, Zonghai, Belharouak, Ilias, Yahia, Hamdi B., Wu, Huiming, Assary, Rajeev, Curtiss, Larry A., and Amine, Khalil. Enabling high energy density Li-ion batteries through Li 2 O activation. Netherlands: N. p., 2016. Web. doi:10.1016/j.nanoen.2016.06.050.
Abouimrane, Ali, Cui, Yanjie, Chen, Zonghai, Belharouak, Ilias, Yahia, Hamdi B., Wu, Huiming, Assary, Rajeev, Curtiss, Larry A., & Amine, Khalil. Enabling high energy density Li-ion batteries through Li 2 O activation. Netherlands. doi:10.1016/j.nanoen.2016.06.050.
Abouimrane, Ali, Cui, Yanjie, Chen, Zonghai, Belharouak, Ilias, Yahia, Hamdi B., Wu, Huiming, Assary, Rajeev, Curtiss, Larry A., and Amine, Khalil. 2016. "Enabling high energy density Li-ion batteries through Li 2 O activation". Netherlands. doi:10.1016/j.nanoen.2016.06.050.
@article{osti_1359606,
title = {Enabling high energy density Li-ion batteries through Li 2 O activation},
author = {Abouimrane, Ali and Cui, Yanjie and Chen, Zonghai and Belharouak, Ilias and Yahia, Hamdi B. and Wu, Huiming and Assary, Rajeev and Curtiss, Larry A. and Amine, Khalil},
abstractNote = {},
doi = {10.1016/j.nanoen.2016.06.050},
journal = {Nano Energy},
number = C,
volume = 27,
place = {Netherlands},
year = 2016,
month = 9
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1016/j.nanoen.2016.06.050

Citation Metrics:
Cited by: 3works
Citation information provided by
Web of Science

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  • 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 themore » abnormal high capacity associated with these high energy cathode materials.« less
  • Reducing cost and increasing energy density are two barriers for widespread application of lithium-ion batteries in electric vehicles. Although the cost of electric vehicle batteries has been reduced by ~70% from 2008 to 2015, the current battery pack cost (268/kWh in 2015) is still >2 times what the USABC targets (125/kWh). Even though many advancements in cell chemistry have been realized since the lithium-ion battery was first commercialized in 1991, few major breakthroughs have occurred in the past decade. Therefore, future cost reduction will rely on cell manufacturing and broader market acceptance. Here, this article discusses three major aspects formore » cost reduction: (1) quality control to minimize scrap rate in cell manufacturing; (2) novel electrode processing and engineering to reduce processing cost and increase energy density and throughputs; and (3) material development and optimization for lithium-ion batteries with high-energy density. Insights on increasing energy and power densities of lithium-ion batteries are also addressed.« less
  • Our development of stable high-voltage (HV), high capacity (HC) cathode oxides is indispensable to enhancing the performance of current high-energy-density (HED) lithium-ion batteries. Overstoichiometric, layered Li- and Mn-rich (LMR) composite oxides are promising materials for HV-HC cathodes for HED batteries; however, their practical use is limited. By probing the crystal structure, magnetic structure, and microstructure of the Li 1.2Mn 0.55Ni 0.15Co 0.1O 2 LMR oxide, we demonstrate that the oxide loses its pristine chemistry, structure, and composition during the first charge-discharge cycle and that it proceeds through a series of progressive events that introduce impediments on the ion mobility pathways.more » Here, we discovered i) the presence of tetrahedral Mn 3+, interlayer cation intermixing, interface of layered-spinel, and structurally rearranged domains, cation segregation at an HV charged state, and ii) the loss of Li ions, inhomogeneous distribution of Li/Ni, and structurally transformed domains after the first discharge. Our results will advance our fundamental understanding of the obstacles related to ion migration pathways in HV-HC cathode systems and will enable us to formulate design rules for use of such materials in high-energy-density electrochemical-energy-storage devices.« less
  • Our development of stable high-voltage (HV), high capacity (HC) cathode oxides is indispensable to enhancing the performance of current high-energy-density (HED) lithium-ion batteries. Overstoichiometric, layered Li- and Mn-rich (LMR) composite oxides are promising materials for HV-HC cathodes for HED batteries; however, their practical use is limited. By probing the crystal structure, magnetic structure, and microstructure of the Li 1.2Mn 0.55Ni 0.15Co 0.1O 2 LMR oxide, we demonstrate that the oxide loses its pristine chemistry, structure, and composition during the first charge-discharge cycle and that it proceeds through a series of progressive events that introduce impediments on the ion mobility pathways.more » Here, we discovered i) the presence of tetrahedral Mn 3+, interlayer cation intermixing, interface of layered-spinel, and structurally rearranged domains, cation segregation at an HV charged state, and ii) the loss of Li ions, inhomogeneous distribution of Li/Ni, and structurally transformed domains after the first discharge. Our results will advance our fundamental understanding of the obstacles related to ion migration pathways in HV-HC cathode systems and will enable us to formulate design rules for use of such materials in high-energy-density electrochemical-energy-storage devices.« less