Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Effect of Thermal Pressing Temperature on the Mechanical and Material Properties of Electro-spun Polyacrylonitrile Nano-fibrous Separator

열압착 온도가 전기방사 Polyacrylonitrile 분리막의 기계적 강도 및 물성치에 미치는 영향

  • Kim, Minchoel (School of Mechanical Engineering, Yeungnam Univ.) ;
  • Ko, Tae Jo (School of Mechanical Engineering, Yeungnam Univ.) ;
  • Arifeen, Waqas Ul (School of Mechanical Engineering, Yeungnam Univ.) ;
  • Dong, Ting (School of Mechanical Engineering, Yeungnam Univ.)
  • Received : 2019.02.28
  • Accepted : 2019.03.29
  • Published : 2019.04.30
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Abstract

The mechanical deformation of a battery separator causes internal short-circuiting of the cathode - anode, which directly affects the explosion/ignition of batteries. To increase the mechanical properties of the separator fabricated by electro-spinning, use of a thermal pressing method is inevitable. Therefore, this research aims to maximize the mechanical strength of a porous separator by finding the proper thermal press temperatures given to Electro-spun Polyacrylonitrile (PAN) nanofibers. The different thermal press temperatures $25^{\circ}C$, $50^{\circ}C$, $75^{\circ}C$, and $100^{\circ}C$ were applied to the electro-spun fiber at 30 MPa pressure for one hour. The higher the temperature, the higher the resultant tensile strength; however, a higher temperature also lowered the strain and porosity. Thus, the membrane thermal pressed at $50^{\circ}C$ showed the best mechanical properties and the second highest porosity. Using the data, $50^{\circ}C$ was judged as the best thermal pressing temperature in terms of performance.

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References

  1. Ma, X., Kolla, P., Yang, R., Wang, Z., Zhao, Y., Smirnova, A. L., Fong, H., "Electrospun polyacrylonitrile nanofibrous membranes with varied fiber diameters and different membrane porosities as lithium-ion battery separators," Electrochimica Acta, Vol. 236, 417-423, 2017. https://doi.org/10.1016/j.electacta.2017.03.205
  2. Cho, J., Jung, Y. C., Lee, Y. S., Kim, D. W., "High performance separator coated with amino-functionalized SiO2particles for safety enhanced lithium-ion batteries," J. of Membrane Science, Vol. 535, 151-157, 2017. https://doi.org/10.1016/j.memsci.2017.04.042
  3. Liao, Y., Sun, C., Hu, S., Li, W., "Anti-thermal shrinkage nanoparticles/polymer and ionic liquid based gel polymer electrolyte for lithium ion battery," Electrochimica Acta, Vol. 89, 461-468, 2013. https://doi.org/10.1016/j.electacta.2012.11.095
  4. Zhu, Y., Yin, M., Liu, H., Na, B., Lv, R., Wang, B., Huang, Y., "Modification and characterization of electrospun poly (vinylidene fluoride)/poly (acrylonitrile) blend separator membranes," Composites Part B: Engineering, Vol. 112, 31-37, 2017. https://doi.org/10.1016/j.compositesb.2016.12.025
  5. Shen, X., Li, C., Shi, C., Yang, C., Deng, L., Zhang, W., Peng, L., Dai, J., Wu, D., Zhang, P., Zhao, J., "Core-shell structured ceramic nonwoven separators by atomic layer deposition for safe lithium-ion batteries," Applied Surface Science, Vol. 441, 165-173, 2018. https://doi.org/10.1016/j.apsusc.2018.01.222
  6. Smith, S. A., Williams, B. P., Joo, Y. L., "Effect of polymer and ceramic morphology on the material and electrochemical properties of electrospun PAN/polymer derived ceramic composite nano fiber membranes for lithium ion battery separators," J. of Membrane Science, Vol. 526, 315-322, 2017. https://doi.org/10.1016/j.memsci.2016.12.052
  7. Angulakshmi, N., Stephan, A. M., "Electrospun trilayer polymeric membranes as separator for lithium-ion batteries," Electrochimica Acta, Vol. 127, 167-172, 2014. https://doi.org/10.1016/j.electacta.2014.01.162
  8. Park, S. R., Jung, Y. C., Shin, W. K., Ahn, K. H., Lee, C. H., Kim, D. W., "Cross-linked fibrous composite separator for high performance lithium-ion batteries with enhanced safety," J. of Membrane Science, Vol. 527, 129-136, 2017. https://doi.org/10.1016/j.memsci.2017.01.015
  9. He, T., Fu, Y., Meng, X., Yu, X., Wang, X., "A novel strategy for the high performance supercapacitor based on polyacrylonitrile-derived porous nano fibers as electrode and separator in ionic liquid electrolyte," Electrochimica Acta, Vol. 282, 97-104, 2018. https://doi.org/10.1016/j.electacta.2018.06.029
  10. Liu, X., Song, K., Lu, C., Huang, Y., Duan, X., Li, S., Ding, Y., "Electrospun PU@GO separators for advanced lithium ion batteries," J. of Membrane Science. Vol. 555, 1-6, 2018. https://doi.org/10.1016/j.memsci.2018.03.027
  11. Liang, Y., Cheng, S., Zhao, J., Zhang, C., Sun, S., Zhou, N., Qiu, Y., Zhang, X., "Heat treatment of electrospun Polyvinylidene fluoride fibrous membrane separators for rechargeable lithium-ion batteries," J. of Power Sources, Vol. 240, 204-211, 2013. https://doi.org/10.1016/j.jpowsour.2013.04.019
  12. Wu, D., Shi, C., Huang, S., Qiu, X., Wang, H., Zhan, Z., Zhang, P., Zhao, J., Sun, D., Lin, L., "Electrospun Nanofibers for Sandwiched Polyimide/Poly (vinylidene fluoride)/Polyimide Separators with the Thermal Shutdown Function," Electrochimica Acta, Vol. 176, 727-734, 2015. https://doi.org/10.1016/j.electacta.2015.07.072
  13. He, C., Liu, J., Li, J., Zhu, F., Zhao, H., "Blending based polyacrylonitrile/poly(vinylalcohol) membrane for rechargeable lithium ion batteries," J. of Membrane Science, Vol. 560, 30-37, 2018. https://doi.org/10.1016/j.memsci.2018.05.013
  14. Ahmad, A. L., Farooqui, U. R., Hamid, N. A., "Synthesis and characterization of porous poly(vinylidene fluoride-co-hexafluoro propylene) (PVDF-co-HFP)/poly(aniline) (PANI)/graphene oxide (GO) ternary hybrid polymer electrolyte membrane," Electrochimica Acta, Vol. 283, 842-849, 2018. https://doi.org/10.1016/j.electacta.2018.07.001
  15. Mao, X., Shi, L., Zhang, H., Wang, Z., Zhu, J., Qiu, Z., Zhao, Y., Zhang, M., Yuan, S., "Polyethylene separator activated by hybrid coating improving Li+ion transference number and ionic conductivity for Li-metal battery," J. of Power Sources, Vol. 342, 816-824, 2017. https://doi.org/10.1016/j.jpowsour.2017.01.006
  16. Liu, Q., Xia, M., Chen, J., Tao, Y., Wang, Y., Liu, K., Li, M., Wang, W., Wang, D., "High performance hybrid Al2O3/poly(vinylalcohol-co-ethylene) nanofibrous membrane for lithium-ion battery separator," Electrochimica Acta, Vol. 176, 949-955, 2015. https://doi.org/10.1016/j.electacta.2015.07.104