Journal of Fundamentals of Renewable Energy and Applications

Journal of Fundamentals of Renewable Energy and Applications
Open Access

ISSN: 2090-4541

+44 1300 500008

Clay nanosheets in skeletons of controlled phase inversion separators for thermally stable Li-ion batteries


International Conference on Green Energy & Expo

September 21-23, 2015 Orlando, USA

Jong Hyeok Park and Min Kim

Yonsei University, Republic of Korea

Posters-Accepted Abstracts: J Fundam Renewable Energy Appl

Abstract :

Phase inversion is a powerful alternative process for preparing ultra-thin separators for various secondary batteries. Unfortunately, separators prepared from phase inversion generally suffer from uneven pore size and pore size distribution which frequently results in poor battery performance. Here, a straight forward route is demonstrated to solve the drawbacks of phase-inversion-based separators for Li-ion batteries by means of directly incorporating 2D clay sheets in the skeleton of poly(vinylidene fluoride-co-hexafl uoropropylene) (PVdF-HFP) with multiscale pore generation from a simple one-step solution coating method. Additionally generated pores by the inclusion of 2D nanosheets in PVdF-HFP skeletons combined with the multiscale pores (several micrometers+sub-micrometers) originally generated by means of the controlled phase inversion can generate additional ionic transport pathways leading to Li-ion battery performances better than those of commercialized polyethylene separators. Moreover, the addition of extremely low contents of 2D clay sheets in PVdF-HFP separators allows thermally stable polymer separators to be realized.

Biography :

Jong Hyeok Park has received his PhD in Chemical Engineering from KAIST, Korea in August 2004. He has then joined University of Texas at Austin, USA as a Postdoctoral Researcher in 2004 (under Professor Allen J Bard). From March 2007 to February 2008, he worked at ETRI. He is an author and a co-author of 190 papers and 50 patents. His research focuses on organic solar cells, dye-sensitized solar cells and solar-to-hydrogen conversion devices.

Email: anotherpark@gmail.com

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