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Title: Thermal and electrochemical characterization of MCMB/LiNi{sub 1/3}Co{sub l/3}Mn{sub l/3}O{sub 2} using LiBoB as an electrolyte additive.

Abstract

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 calorimetry 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 thermalmore » stability of the charged LiNi1/3Co1/3Mn1/3O2 with 10% excess Li was not affected when using LiBoB as an electrolyte additive.« less

Authors:
; ; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
EE
OSTI Identifier:
915324
Report Number(s):
ANL/CMT/JA-56593
Journal ID: ISSN 0378-7753; JPSODZ; TRN: US200817%%318
DOE Contract Number:
DE-AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: J. Power Sources; Journal Volume: 163; Journal Issue: 2007
Country of Publication:
United States
Language:
ENGLISH
Subject:
25 ENERGY STORAGE; 36 MATERIALS SCIENCE; METAL-NONMETAL BATTERIES; LITHIUM COMPOUNDS; BORATES; LITHIUM OXIDES; NICKEL OXIDES; COBALT OXIDES; MANGANESE OXIDES; ADDITIVES; CAPACITY; SOLID ELECTROLYTES

Citation Formats

Lu, W., Chen, Z., Joachin, H., Prakash, J., Liu, J., Amine, K., Chemical Engineering, and Illinois Inst. of Tech. Thermal and electrochemical characterization of MCMB/LiNi{sub 1/3}Co{sub l/3}Mn{sub l/3}O{sub 2} using LiBoB as an electrolyte additive.. United States: N. p., 2007. Web. doi:10.1016/j.jpowsour.2006.09.010.
Lu, W., Chen, Z., Joachin, H., Prakash, J., Liu, J., Amine, K., Chemical Engineering, & Illinois Inst. of Tech. Thermal and electrochemical characterization of MCMB/LiNi{sub 1/3}Co{sub l/3}Mn{sub l/3}O{sub 2} using LiBoB as an electrolyte additive.. United States. doi:10.1016/j.jpowsour.2006.09.010.
Lu, W., Chen, Z., Joachin, H., Prakash, J., Liu, J., Amine, K., Chemical Engineering, and Illinois Inst. of Tech. Mon . "Thermal and electrochemical characterization of MCMB/LiNi{sub 1/3}Co{sub l/3}Mn{sub l/3}O{sub 2} using LiBoB as an electrolyte additive.". United States. doi:10.1016/j.jpowsour.2006.09.010.
@article{osti_915324,
title = {Thermal and electrochemical characterization of MCMB/LiNi{sub 1/3}Co{sub l/3}Mn{sub l/3}O{sub 2} using LiBoB as an electrolyte additive.},
author = {Lu, W. and Chen, Z. and Joachin, H. and Prakash, J. and Liu, J. and Amine, K. and Chemical Engineering and Illinois Inst. of Tech.},
abstractNote = {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 calorimetry 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.},
doi = {10.1016/j.jpowsour.2006.09.010},
journal = {J. Power Sources},
number = 2007,
volume = 163,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}