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Title: Nonlinear Conductivities and Electrochemical Performances of LiNi 0.5 Co 0.2 Mn 0.3 O 2 Electrodes

Abstract

There is increasing research attention on optimizing the carbon black nanoparticles’ structure and loading procedure for improving conductivities and thus, electrochemical performances of cathodes in lithium-ion batteries. Recently, LiNi 0.5Co 0.2Mn 0.3O 2 (NCM523) has been actively investigated due to its larger specific capacity and lower cost compared to conventional cathode materials. Presented here is a high energy density NCM523 cathode obtained by reducing the carbon content using the state-of-the-art carbon nanoparticles developed at Cabot Corporation. It is the first time that the nonlinear conductivity of NCM523 electrodes has been discovered, which is significantly impacted by the dispersion and surface crystalline quality of carbon black nanoparticles, especially when the loading of carbon black is only 1 wt%. The nonlinear conductivity of the cathodes can dramatically affect their electrochemical performances at high rates ($$\geqq$$3C), which is close to the tunneling saturated current. In addition, there is no discernable difference in terms of the rate and cycle performance of the NCM523 electrodes, when reducing the loading of novel carbon black nanoparticles from 5 wt% to 1 wt% in the cathode. Therefore, the energy density of the electrode can be increased by 9% by using existing commercially available electrode materials.

Authors:
 [1];  [1];  [1];  [2];  [2];  [2];  [1];  [1]
  1. Argonne National Lab. (ANL), Argonne, IL (United States). Chemical Sciences and Engineering Division
  2. Cabot Business and Technology Center, Billerica, MA (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
OSTI Identifier:
1429895
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Journal of the Electrochemical Society
Additional Journal Information:
Journal Volume: 163; Journal Issue: 13; Journal ID: ISSN 0013-4651
Publisher:
The Electrochemical Society
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; Capacity; Carbon black; LiNi0.5Co0.2Mn0.3O2; Lithium ion battery; high rate; Nonlinear conductivity

Citation Formats

Su, Xin, Ha, Seonbaek, Ishwait, Manar B., Lei, Hanwei, Oljaca, Miki, Blizanac, Berislav, Dees, Dennis, and Lu, Wenquan. Nonlinear Conductivities and Electrochemical Performances of LiNi 0.5 Co 0.2 Mn 0.3 O 2 Electrodes. United States: N. p., 2016. Web. doi:10.1149/2.0961613jes.
Su, Xin, Ha, Seonbaek, Ishwait, Manar B., Lei, Hanwei, Oljaca, Miki, Blizanac, Berislav, Dees, Dennis, & Lu, Wenquan. Nonlinear Conductivities and Electrochemical Performances of LiNi 0.5 Co 0.2 Mn 0.3 O 2 Electrodes. United States. doi:10.1149/2.0961613jes.
Su, Xin, Ha, Seonbaek, Ishwait, Manar B., Lei, Hanwei, Oljaca, Miki, Blizanac, Berislav, Dees, Dennis, and Lu, Wenquan. Fri . "Nonlinear Conductivities and Electrochemical Performances of LiNi 0.5 Co 0.2 Mn 0.3 O 2 Electrodes". United States. doi:10.1149/2.0961613jes. https://www.osti.gov/servlets/purl/1429895.
@article{osti_1429895,
title = {Nonlinear Conductivities and Electrochemical Performances of LiNi 0.5 Co 0.2 Mn 0.3 O 2 Electrodes},
author = {Su, Xin and Ha, Seonbaek and Ishwait, Manar B. and Lei, Hanwei and Oljaca, Miki and Blizanac, Berislav and Dees, Dennis and Lu, Wenquan},
abstractNote = {There is increasing research attention on optimizing the carbon black nanoparticles’ structure and loading procedure for improving conductivities and thus, electrochemical performances of cathodes in lithium-ion batteries. Recently, LiNi0.5Co0.2Mn0.3O2 (NCM523) has been actively investigated due to its larger specific capacity and lower cost compared to conventional cathode materials. Presented here is a high energy density NCM523 cathode obtained by reducing the carbon content using the state-of-the-art carbon nanoparticles developed at Cabot Corporation. It is the first time that the nonlinear conductivity of NCM523 electrodes has been discovered, which is significantly impacted by the dispersion and surface crystalline quality of carbon black nanoparticles, especially when the loading of carbon black is only 1 wt%. The nonlinear conductivity of the cathodes can dramatically affect their electrochemical performances at high rates ($\geqq$3C), which is close to the tunneling saturated current. In addition, there is no discernable difference in terms of the rate and cycle performance of the NCM523 electrodes, when reducing the loading of novel carbon black nanoparticles from 5 wt% to 1 wt% in the cathode. Therefore, the energy density of the electrode can be increased by 9% by using existing commercially available electrode materials.},
doi = {10.1149/2.0961613jes},
journal = {Journal of the Electrochemical Society},
number = 13,
volume = 163,
place = {United States},
year = {2016},
month = {1}
}

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