Abstract
A linear carboxylic, ester ethyl propionate (EP), was used as the co-solvent of carbonates, ethylene carbonate (EC), ethyl-methyl carbonate (EMC) and dimethyl carbonate (DMC), and its effect on low-temperature performance of LiFePO4-based Li-ion battery was studied by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and galvanostatic charge-discharge test. The application of EP enhances the ionic conductivity of the electrolyte, improves the compatibility of the electrolyte with both LiFePO4 and graphite materials, and thus improves the low-temperature performance of LiFePO4-based Li-ion battery. The Li-ion battery using the optimized electrolyte of 1 mol·L-1 LiPF6/EC:EMC:DMC:EP (1:1:1:3) shows the capacity retention of 82.9%, 75.6%, 59.0%, 46.4%, and 37.6% of discharge capacity at room temperature when discharged at 10 oC (1C), -10 oC (0.2C), -20 oC (0.2C), -30 oC (0.2C), and -40 oC (0.2C), respectively.
Keywords
lithium ion battery, LiFePO4, low-temperature performance, ethyl propionate
Publication Date
2013-06-28
Online Available Date
2013-01-13
Revised Date
2013-01-06
Received Date
2012-10-12
Recommended Citation
Xiao-ping LI, Lian-sheng HAO, Wei-shan LI, Meng-qing XU, Li-dan XING.
Effect of Ethyl Propionate on Low-Temperature Performance of LiFePO4-Based Li-Ion Battery[J]. Journal of Electrochemistry,
2013
,
19(3): Article 8.
DOI: 10.61558/2993-074X.2955
Available at:
https://jelectrochem.xmu.edu.cn/journal/vol19/iss3/8
References
[1] Plichta E J, Behl W K. A low-temperature electrolyte for lithium and lithium-ion batteries[J]. Journal of Power Sources, 2000, 88(2): 192-196.
[2] Plichta E J, Hendrickson M, Thompson R, et al. Development of low temperature Li-ion electrolytes for NASA and DOD applications[J]. Journal of Power Sources, 2001, 94(2): 160-162.
[3] Herreyre S, Huchet O, Barusseau S, et al. New Li-ion electrolytes for low temperature applications[J]. Journal of Power Sources, 2001, 97-98: 576-580.
[4] Zhang S S, Xu K, Allen J L, et al. Effect of propylene carbonate on the low temperature performance of Li-ion cells[J]. Journal of Power Sources, 2002, 110(1): 216-221.
[5] Zhang S S, Xu K, Jow T R. Tris (2,2,2-trifluoroethyl) phosphite as a co-solvent for nonflammable electrolytes in Li-ion batteries[J]. Journal of Power Sources, 2003, 113(1): 166-172.
[6] Zhang S S, Xu K, Jow T R. Electrochemical impedance study on the low temperature of Li-ion batteries[J]. Electrochimica Acta, 2004, 49(7): 1057-1061.
[7] Zhang S S, Jow T R, Amine K, et al. LiPF6-EC-EMC electrolyte for Li-ion battery[J]. Journal of Power Sources, 2002, 107(1): 18-23.
[8] Blomgern G E. Electrolytes for advanced batteries[J]. Journal of Power Sources, 1999, 81: 112-118.
[9] Kim H. The insertion mechanism of lithium into Mg2Si anode material for Li-ion batteries[J]. Journal of Electrochemical Society, 1999, 146(12): 4401-4405.
[10] Levi M D, Aurbach D. Simultaneous measurements and modeling of the electrochemical impedance and the cyclic voltammetric characteristics of graphite electrodes doped with lithium[J]. The Journal of Physical Chemistry B, 1997, 101(23): 4630-4640.
[11] Tang K, Yu X Q, Sun J P, et al. Kinetic analysis on LiFePO4 thin films by CV, GITT, and EIS[J]. Electrochimica Acta, 2011, 56: 4869-4875.
[12] Liao L X, Cheng X Q, Ma Y L, et al. Fluoroethylene carbonate as electrolyte additive to improve low temperature performance of LiFePO4 electrode[J]. Electrochimica Acta, 2013, 87: 466-472.
[13] Aurbach D, Levi M D, Levi E. Common electroanalytical behavior of Li intercalation processes into graphite and transition metal oxides[J]. Journal of Electrochemical Society, 1998, 145: 3024-3034.
Included in
Engineering Science and Materials Commons, Materials Chemistry Commons, Materials Science and Engineering Commons, Physical Chemistry Commons, Power and Energy Commons
