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Title: Mass and charge transport relevant to the formation of toroidal lithium peroxide nanoparticles in an aprotic lithium-oxygen battery: An experimental and theoretical modeling study

In this paper, the discharge and charge mechanisms of rechargeable Li-O 2 batteries have been the subject of extensive investigation recently. However, they are not fully understood yet. Here we report a systematic study of the morphological transition of Li 2O 2 from a single crystalline structure to a toroid like particle during the discharge-charge cycle, with the help of a theoretical model to explain the evolution of the Li 2O 2 at different stages of this process. The model suggests that the transition starts in the first monolayer of Li 2O 2, and is subsequently followed by a transition from particle growth to film growth if the applied current exceeds the exchange current for the oxygen reduction reaction in a Li-O 2 cell. Furthermore, a sustainable mass transport of the diffusive active species (e.g., O 2 and Li +) and evolution of the underlying interfaces are critical to dictate desirable oxygen reduction (discharge) and evolution (charge) reactions in the porous carbon electrode of a Li-O 2 cell.
Authors:
 [1] ;  [2] ;  [3] ;  [1] ;  [1] ;  [1] ;  [4] ;  [4] ;  [1]
  1. Argonne National Lab. (ANL), Lemont, IL (United States)
  2. Argonne National Lab. (ANL), Lemont, IL (United States); Univ. of Illinois at Chicago, Chicago, IL (United States)
  3. Argonne National Lab. (ANL), Lemont, IL (United States); California State Univ. Northridge, Northridge, CA (United States)
  4. Univ. of Illinois at Chicago, Chicago, IL (United States)
Publication Date:
Grant/Contract Number:
AC02-06CH11357
Type:
Accepted Manuscript
Journal Name:
Nano Research
Additional Journal Information:
Journal Volume: 10; Journal Issue: 12; Journal ID: ISSN 1998-0124
Publisher:
Springer
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; rechargeable Li-O2 battery; electrocatalyst; nanocomposite; lithium peroxide
OSTI Identifier:
1427483

Luo, Xiangyi, Amine, Rachid, Lau, Kah Chun, Lu, Jun, Zhan, Chun, Curtiss, Larry A., Al Hallaj, Said, Chaplin, Brian P., and Amine, Khalil. Mass and charge transport relevant to the formation of toroidal lithium peroxide nanoparticles in an aprotic lithium-oxygen battery: An experimental and theoretical modeling study. United States: N. p., Web. doi:10.1007/s12274-017-1529-z.
Luo, Xiangyi, Amine, Rachid, Lau, Kah Chun, Lu, Jun, Zhan, Chun, Curtiss, Larry A., Al Hallaj, Said, Chaplin, Brian P., & Amine, Khalil. Mass and charge transport relevant to the formation of toroidal lithium peroxide nanoparticles in an aprotic lithium-oxygen battery: An experimental and theoretical modeling study. United States. doi:10.1007/s12274-017-1529-z.
Luo, Xiangyi, Amine, Rachid, Lau, Kah Chun, Lu, Jun, Zhan, Chun, Curtiss, Larry A., Al Hallaj, Said, Chaplin, Brian P., and Amine, Khalil. 2017. "Mass and charge transport relevant to the formation of toroidal lithium peroxide nanoparticles in an aprotic lithium-oxygen battery: An experimental and theoretical modeling study". United States. doi:10.1007/s12274-017-1529-z. https://www.osti.gov/servlets/purl/1427483.
@article{osti_1427483,
title = {Mass and charge transport relevant to the formation of toroidal lithium peroxide nanoparticles in an aprotic lithium-oxygen battery: An experimental and theoretical modeling study},
author = {Luo, Xiangyi and Amine, Rachid and Lau, Kah Chun and Lu, Jun and Zhan, Chun and Curtiss, Larry A. and Al Hallaj, Said and Chaplin, Brian P. and Amine, Khalil},
abstractNote = {In this paper, the discharge and charge mechanisms of rechargeable Li-O2 batteries have been the subject of extensive investigation recently. However, they are not fully understood yet. Here we report a systematic study of the morphological transition of Li2O2 from a single crystalline structure to a toroid like particle during the discharge-charge cycle, with the help of a theoretical model to explain the evolution of the Li2O2 at different stages of this process. The model suggests that the transition starts in the first monolayer of Li2O2, and is subsequently followed by a transition from particle growth to film growth if the applied current exceeds the exchange current for the oxygen reduction reaction in a Li-O2 cell. Furthermore, a sustainable mass transport of the diffusive active species (e.g., O2 and Li+) and evolution of the underlying interfaces are critical to dictate desirable oxygen reduction (discharge) and evolution (charge) reactions in the porous carbon electrode of a Li-O2 cell.},
doi = {10.1007/s12274-017-1529-z},
journal = {Nano Research},
number = 12,
volume = 10,
place = {United States},
year = {2017},
month = {5}
}

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