Improvement of low-temperature performance by adopting polydimethylsiloxane-g-polyacrylate and lithium-modified silica nanosalt as electrolyte additives in lithium-ion batteries

Jung Ha Won; Hae Soo Lee; Louis Hamenu; Mohammed Latifatu; Yong Min Lee; Kwang Man Kim; Jemyung Oh; Won Il Cho; Jang Myoun Ko

Journal of Industrial and Engineering Chemistry, Vol.37, 325-329, May, 2016

DOI10.1016/j.jiec.2016.03.045 Export Citation

Improvement of low-temperature performance by adopting polydimethylsiloxane-g-polyacrylate and lithium-modified silica nanosalt as electrolyte additives in lithium-ion batteries

Jung Ha Won, Hae Soo Lee, Louis Hamenu, Mohammed Latifatu, Yong Min Lee, Kwang Man Kim^{1, †}, Jemyung Oh², Won Il Cho³, and Jang Myoun Ko^†

Department of Chemical and Biological Engineering, Hanbat National University, Daejon 34158, Republic of Korea
¹Research Section of Power Control Devices, Electronics and Telecommunications Research Institute (ETRI), Daejon 34129, Republic of Korea
²Materials Engineering Department, Adama Science and Technology University, Ethiopia
³Center for Energy Convergence, Korea Institute of Science and Technology, 14gil-5, Hwarang-ro, Seongbuk-gu, Seoul 136-791, Republic of Korea

E-mail:,

In this work, poly[dimethylsiloxane-co-(siloxane-g-acrylate)] (PDMS-A) and lithium-modified silica nanosalt (Li202) are used together as low-temperature electrolyte additives in lithium-ion batteries (LIBs), taking advantage of the electrochemical and interfacial stabilities due to their surface functional groups. Using these additives together improves the electrochemical stability and ionic conductivity of liquid electrolyte solution to over 5.5 V and 4 ×10-4 S cm-1 at -20 ℃, respectively. The roomtemperature electrochemical performance of a conventional LIB (LiCoO2/graphite) is improved by the addition (e.g., initial discharge capacity of 95.9 mAh g-1 obtained after charging at 1.0 C-rate and consequent discharging at 5.0 C-rate). The low-temperature performance is also enhanced, achieving a capacity retention ratio of 63.4% after 50 cycles at -20 ℃, compared to 38.7% without the additives. It is also notable that the PDMS unit commonly existing in both additives may be the main cause of the synergistic effects on the electrochemical performance due to the compatibility between PDMS-A and Li202.

Keywords:Polydimethylsiloxane additive;Lithium-silica nanosalt;Electrolyte additives;Low-temperature performance;Lithium-ion battery

[References]

[Referenced By]

[1] Smart MC, Ratnakumar BV, Surampudi S, J. Electrochem. Soc., 149(4), A361 (2002)

[2] Sazhin SV, Khimchenko MY, Tritenichenko YN, Lim HS, J. Power Sources, 87(1-2), 112 (2000)

[3] Ding MS, Xu K, Zhang SS, Jow TR, J. Electrochem. Soc., 148(4), A299 (2001)

[4] Mandal BK, Padhi AK, Shi Z, Chakraborty S, Filler R, J. Power Sources, 162(1), 690 (2006)

[5] Zhang SS, Xu K, Jow TR, J. Power Sources, 115(1), 137 (2003)

[6] Oh B, Vissers D, Zhang Z, West R, Tsukamoto H, Amine K, J. Power Sources, 119-121, 442 (2003)

[7] Nakahara H, Tanaka M, Yoon SY, Nutt S, J. Power Sources, 160(1), 645 (2006)

[8] Kang Y, Lee W, Suh DH, Lee C, J. Power Sources, 119-121, 448 (2003)

[9] Inose T, Tada S, Morimoto H, Tobishima SI, J. Power Sources, 161(1), 550 (2006)

[10] Takeuchi T, Noguchi S, Morimoto H, Tobishima S, J. Power Sources, 195(2), 580 (2010)

[11] Hu QC, Osswald S, Daniel R, Zhu Y, Wesel S, Ortiz L, Sadoway DR, J. Power Sources, 196(13), 5604 (2011)

[12] Kim KM, Ly NV, Won JH, Lee YG, Cho WI, Ko JM, Kaner RB, Electrochim. Acta, 136, 182 (2014)

[13] Choi NS, Lee YM, Lee BH, Lee JA, Park JK, Solid State Ion., 167(3-4), 293 (2004)

[14] Sun J, Bayley P, MacFarlane DR, Forsyth M, Electrochim. Acta, 52(24), 7083 (2007)

[15] Hamenu L, Lee HS, Latifatu M, Kim KM, Park J, Baek YG, Ko JM, Kaner RB, Curr. Appl. Phys., 16, 611 (2016)

[16] Jung HW, Hamenu L, Lee HS, Latifatu M, Kim KM, Ko JM, Curr. Appl. Phys., 15(4), 567 (2015)