Crosslinkable polyhedral silsesquioxane-based ceramic-coated separators for Li-ion batteries

Hyunkyu Jeon; Youngjoon Roh; Dahee Jin; Myung-Hyun Ryou; Yong-Cheol Jeong; Yong Min Lee

Journal of Industrial and Engineering Chemistry, Vol.71, 277-283, March, 2019

DOI10.1016/j.jiec.2018.11.036 Export Citation

Crosslinkable polyhedral silsesquioxane-based ceramic-coated separators for Li-ion batteries

Hyunkyu Jeon, Youngjoon Roh¹, Dahee Jin, Myung-Hyun Ryou^†, Yong-Cheol Jeong^{2, †}, and Yong Min Lee^{1, †}

Department of Chemical and Biological Engineering, Hanbat National University, 125 Dongseo-daero, Yuseong-gu, Daejeon 34158, Republic of Korea
¹Department of Energy Science and Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), 333 Techno Jungang-daero, Hyeonpung-myeon, Dalseoung-gun, Daegu 42988, Republic of Korea
²Micro/Nano Scale Manufacturing R&D Department, KITECH, 143 Hanggaulro, Sangnok-gu, Ansan-si, Gyeonggi-do 15588, Republic of Korea

E-mail:, ,

Inorganic polyhedral oligomeric silsesquioxane with epoxy functional groups (ePOSS) is newly presented as a co-binder for the ceramic-coated separator (CCS) for safe Li-ion batteries. The ePOSS-incorporated coating layer significantly improved the dimensional stability of the CCS at 140 °C and maintained the original form even after an ignition test. Although the permeability of the CCS was slightly decreased due to the crosslinked structure of the silsesquioxane coating layer, it showed high electrochemical stability up to 5 V. Moreover, the improved liquid electrolyte wettability by ePOSS co-binder enhanced the ionic conductivity and showed 93% of cycle capacity at 0.5C rate in Li-ion batteries.

Keywords:Li-ion battery;Ceramic-coated separator;Silsesquioxane;Flame retardancy;Thermal stability

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[2] Thackeray MM, Wolverton C, Isaacs ED, Energ. Environ. Sci., 5, 7854 (2012)

[3] Orendorff CJ, Electrochem. Soc. Interface, 21, 61 (2012)

[4] Doughty DH, Pesaran AA, Vehicle battery safety roadmap guidance, National Renewable Energy Laboratory, 2012.

[5] Roth EP, Doughty DH, Pile DL, J. Power Sources, 174(2), 579 (2007)

[6] Maleki H, Howard JN, J. Power Sources, 191(2), 568 (2009)

[7] Zhang H, Zhang Y, Xu TG, John AE, Li Y, Li WS, Zhu BK, J. Power Sources, 329, 8 (2016)

[8] Song KW, Kim CK, J. Membr. Sci., 352(1-2), 239 (2010)

[9] Huang XS, J. Power Sources, 216, 216 (2012)

[10] Zhang H, Lin CE, Zhou MY, John AE, Zhu BK, Electrochim. Acta, 187, 125 (2016)

[11] Gwona SJ, Choi JH, Sohn JY, Lim YM, Nho YC, Ihm YE, J. Ind. Eng. Chem., 15(5), 748 (2009)

[12] Yu L, Jin Y, Lin Y, RSC Adv., 6, 40002 (2016)

[13] Shi C, Zhang P, Chen LX, Yang PT, Zhao JB, J. Power Sources, 270, 547 (2014)

[14] Huang X, J. Solid State Electr., 15, 649 (2011)

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[16] Ko Y, Yoo H, Kim J, RSC Adv., 4, 19229 (2014)

[17] Jeon H, Jin SY, Park WH, Lee H, Kim HT, Ryou MH, Lee YM, Electrochim. Acta, 212, 649 (2016)

[18] Choi JA, Kim SH, Kim DW, J. Power Sources, 195(18), 6192 (2010)

[19] Jin SY, Manuel J, Zhao X, Park WH, Ahn JH, J. Ind. Eng. Chem., 45, 15 (2017)

[20] Yang PT, Zhang P, Shi C, Chen LX, Dai JH, Zhao JB, J. Membr. Sci., 474, 148 (2015)

[21] Zhu X, Jiang X, Ai X, Yang H, Cao Y, ACS Appl. Mater. Inter., 7, 24119 (2015)

[22] Shin WK, Kim DW, J. Power Sources, 226, 54 (2013)

[23] Kang SM, Ryou MH, Choi JW, Lee H, Chem. Mater., 24, 3481 (2012)

[24] Fu D, Luan B, Argue S, Bureau MN, Davidson IJ, J. Power Sources, 206, 325 (2012)

[25] Lee Y, Lee H, Lee T, Ryou MH, Lee YM, J. Power Sources, 294, 537 (2015)

[26] Jung KH, Bae BS, J. Appl. Polym. Sci., 108(5), 3169 (2008)

[27] Zhang ZP, Liang GZ, Lu TL, J. Appl. Polym. Sci., 103(4), 2608 (2007)

[28] Yeon D, Lee Y, Ryou MH, Lee YM, Electrochim. Acta, 157, 282 (2015)

[29] Gong S, Jeon H, Lee H, Ryou MH, Lee YM, Acs. Appl. Mater. Interfaces, 17814 (2017).