skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Geometric and Electrochemical Characteristics of LiNi 1/3 Mn 1/3 Co 1/3 O 2 Electrode with Different Calendering Conditions

Abstract

The impact of calendering process on the geometric characteristics and electrochemical performance of LiNi1/3Mn1/3Co1/3O2 (NMC) electrode was investigated in this study. The geometric properties of NMC electrodes with different calendering conditions, such as porosity, pore size distribution, particle size distribution, specific surface area and tortuosity were calculated from the computed tomography data of the electrodes. A synchrotron transmission X-ray microscopy tomography system at the Advanced Photon Source of the Argonne National Laboratory was employed to obtain the tomography data. The geometric and electrochemical analysis show that calendering can increase the electrochemically active area, which improves rate capability. However, more calendering will result in crushing of NMC particles, which can reduce the electrode capacity at relatively high C rates. This study shows that the optimum electrochemical performance of NMC electrode at 94:3:3 weight ratio of NMC:binder:carbon black can be achieved by calendering to 3.0 g/cm3 NMC density.

Authors:
; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); National Science Foundation (NSF)
OSTI Identifier:
1393182
DOE Contract Number:
AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: Electrochimica Acta; Journal Volume: 232
Country of Publication:
United States
Language:
English
Subject:
Li ion battery; LiNi1/3Mn1/3Co1/3O2; Calendering; Transmission X-ray microscopy; Computed tomography

Citation Formats

Kang, Huixiao, Lim, Cheolwoong, Li, Tianyi, Fu, Yongzhu, Yan, Bo, Houston, Nicole, De Andrade, Vincent, De Carlo, Francesco, and Zhu, Likun. Geometric and Electrochemical Characteristics of LiNi 1/3 Mn 1/3 Co 1/3 O 2 Electrode with Different Calendering Conditions. United States: N. p., 2017. Web. doi:10.1016/j.electacta.2017.02.151.
Kang, Huixiao, Lim, Cheolwoong, Li, Tianyi, Fu, Yongzhu, Yan, Bo, Houston, Nicole, De Andrade, Vincent, De Carlo, Francesco, & Zhu, Likun. Geometric and Electrochemical Characteristics of LiNi 1/3 Mn 1/3 Co 1/3 O 2 Electrode with Different Calendering Conditions. United States. doi:10.1016/j.electacta.2017.02.151.
Kang, Huixiao, Lim, Cheolwoong, Li, Tianyi, Fu, Yongzhu, Yan, Bo, Houston, Nicole, De Andrade, Vincent, De Carlo, Francesco, and Zhu, Likun. Sat . "Geometric and Electrochemical Characteristics of LiNi 1/3 Mn 1/3 Co 1/3 O 2 Electrode with Different Calendering Conditions". United States. doi:10.1016/j.electacta.2017.02.151.
@article{osti_1393182,
title = {Geometric and Electrochemical Characteristics of LiNi 1/3 Mn 1/3 Co 1/3 O 2 Electrode with Different Calendering Conditions},
author = {Kang, Huixiao and Lim, Cheolwoong and Li, Tianyi and Fu, Yongzhu and Yan, Bo and Houston, Nicole and De Andrade, Vincent and De Carlo, Francesco and Zhu, Likun},
abstractNote = {The impact of calendering process on the geometric characteristics and electrochemical performance of LiNi1/3Mn1/3Co1/3O2 (NMC) electrode was investigated in this study. The geometric properties of NMC electrodes with different calendering conditions, such as porosity, pore size distribution, particle size distribution, specific surface area and tortuosity were calculated from the computed tomography data of the electrodes. A synchrotron transmission X-ray microscopy tomography system at the Advanced Photon Source of the Argonne National Laboratory was employed to obtain the tomography data. The geometric and electrochemical analysis show that calendering can increase the electrochemically active area, which improves rate capability. However, more calendering will result in crushing of NMC particles, which can reduce the electrode capacity at relatively high C rates. This study shows that the optimum electrochemical performance of NMC electrode at 94:3:3 weight ratio of NMC:binder:carbon black can be achieved by calendering to 3.0 g/cm3 NMC density.},
doi = {10.1016/j.electacta.2017.02.151},
journal = {Electrochimica Acta},
number = ,
volume = 232,
place = {United States},
year = {Sat Apr 01 00:00:00 EDT 2017},
month = {Sat Apr 01 00:00:00 EDT 2017}
}
  • The gas generation associated with the use of the lithium bis(oxalate)borate--(LiBoB) based electrolyte at the elevated temperature were detected in the pouch cell (MCMB/LiNi1/3Co1/3Mn1/3O2 with 10% excess Li), which might prevent the LiBoB usage as a salt. However, the cell capacity retention was improved significantly, from 87 to 96% at elevated temperature, when using LiBoB as an electrolyte additive. The capacity fade during cycling is discussed using dQ/dE, area specific impedance, and frequency response analysis results. Most of the capacity loss in the cell is associated with the rise in the cell impedance. Moreover, results from the differential scanning calorimetrymore » indicate that the thermal stability of the negative electrode with the solid electrolyte interface (SEI) formed by the reduction of the LiBoB additive was greatly improved compared with that obtained from the reduction of LiPF6-based electrolyte without additive. In this case, the onset temperature of the breakdown of the LiBoB-based SEI is 150 C which is higher than that of the conventional electrolyte without additive. Furthermore, the total heat generated between 60 and 170 C is reduced from 213 to 70 J g{sup -1} when using LiBoB as electrolyte additive compared to the one without additive. In addition, the thermal stability of the charged LiNi1/3Co1/3Mn1/3O2 with 10% excess Li was not affected when using LiBoB as an electrolyte additive.« less
  • The authors report the synthesis and electrochemical properties of highly stoichiometric LiNi{sub 1{minus}z}M{sub z}O{sub 2} (M = Co, Mn, Ti, z {le} 0.3) samples. With the excess lithium method, samples with a well-defined layered structure can be prepared in air. A large rechargeable capacity of about 200 mAh/g is obtained for 10% substitutives. Structural changes during charging and lithium ordering phenomena are discussed. The authors describe the thermal behavior of the substitutives and report the enhanced thermal stability and large rechargeable capacity of the manganese substitutives.
  • The electrolyte additive, 3,9-divinyl-2,4,8,10-tetraoxaspiro[5,5] undecane (TOS), was investigated as a means to improve the life of mesocarbon microbead (MCMB)/Li1.1[Ni1/3Co1/3Mn1/3]0.9O2 (NCM) cells for high-power applications. With the addition of an appropriate amount of TOS (no more than 1 wt%) to MCMB/NCM cells, the capacity retention was significantly improved at 55 C compared with cells containing pristine electrolyte. Aging tests at 55 C indicated that the capacity retention of the negative electrode had benefited as a result of the formation of a stable passivation film at the surface of the carbon electrode due to TOS reduction. Electrochemical impedance spectroscopy showed that amore » TOS addition of more than 0.5 wt% increased the cell interfacial impedance. Differential scanning calorimetry showed that the thermal stability of lithiated MCMB was also improved with the TOS addition.« less