Proton-conducting nanocomposite membranes based on P(VDF-co-CTFE)-g-PSSA graft copolymer and TiO2-PSSA nanoparticles

Jung Tae Park; Joo Hwan Koh; Dong Kyu Roh; Yong Gun Shul; Jong Hak Kim

doi:10.1016/j.ijhydene.2009.12.168

Proton-conducting nanocomposite membranes based on P(VDF-co-CTFE)-g-PSSA graft copolymer and TiO₂-PSSA nanoparticles

Jung Tae Park, Joo Hwan Koh, Dong Kyu Roh, Yong Gun Shul, Jong Hak Kim

Department of Chemical and Biomolecular Engineering

Research output: Contribution to journal › Article › peer-review

28 Citations (Scopus)

Abstract

Bifunctional TiO₂ nanoparticles with hygroscopic and proton-conductive properties were synthesized by grafting proton-conducting polymer, i.e. poly(styrene sulfonic acid) (PSSA) from TiO₂ nanoparitlces via surface-initiated atom transfer radical polymerization (ATRP). These bifunctional TiO₂-PSSA nanoparticles were blended with poly(vinylidene fluoride-co-chlorotrifluoroethylene)-graft-poly(styrene sulfonic acid), i.e. P(VDF-co-CTFE)-g-PSSA to give proton-conducting membranes for high temperature fuel cells. FT-IR, UV-visible spectroscopy and X-ray diffraction (XRD) results revealed bifunctional properties of TiO₂-PSSA nanoparticles due to successful grafting of PSSA chains. Ion exchange capacity (IEC) of P(VDF-co-CTFE)-g-PSSA/TiO₂-PSSA membranes was not significantly changed irrespective of TiO₂-PSSA concentrations, representing almost fixed SO₃^- concentration in the membranes. In contrast, water uptake and proton conductivity of membranes continuously increased with increasing TiO₂-PSSA concentrations, presumably due to hygroscopic, soft conducting property of nanoparticles. The results of thermal gravimetric analysis (TGA) also showed that all the membranes were stable at least up to 280 °C.

Original language	English
Pages (from-to)	1820-1827
Number of pages	8
Journal	International Journal of Hydrogen Energy
Volume	36
Issue number	2
DOIs	https://doi.org/10.1016/j.ijhydene.2009.12.168
Publication status	Published - 2011 Jan

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation (NRF) grant funded by the Korea government (MEST) through the Pioneer Research Center Program (2008-05103) and the Korea Center for Artificial Photosynthesis (KCAP) located in Sogang University (NRF-2009-C1AAA001-2009-0093879). This work was also supported by New & Renewable Energy R&D program (2009T100100606) under the Ministry of Knowledge Economy, Republic of Korea.

All Science Journal Classification (ASJC) codes

Renewable Energy, Sustainability and the Environment
Fuel Technology
Condensed Matter Physics
Energy Engineering and Power Technology

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.ijhydene.2009.12.168

Cite this

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title = "Proton-conducting nanocomposite membranes based on P(VDF-co-CTFE)-g-PSSA graft copolymer and TiO2-PSSA nanoparticles",

abstract = "Bifunctional TiO2 nanoparticles with hygroscopic and proton-conductive properties were synthesized by grafting proton-conducting polymer, i.e. poly(styrene sulfonic acid) (PSSA) from TiO2 nanoparitlces via surface-initiated atom transfer radical polymerization (ATRP). These bifunctional TiO2-PSSA nanoparticles were blended with poly(vinylidene fluoride-co-chlorotrifluoroethylene)-graft-poly(styrene sulfonic acid), i.e. P(VDF-co-CTFE)-g-PSSA to give proton-conducting membranes for high temperature fuel cells. FT-IR, UV-visible spectroscopy and X-ray diffraction (XRD) results revealed bifunctional properties of TiO2-PSSA nanoparticles due to successful grafting of PSSA chains. Ion exchange capacity (IEC) of P(VDF-co-CTFE)-g-PSSA/TiO2-PSSA membranes was not significantly changed irrespective of TiO2-PSSA concentrations, representing almost fixed SO3- concentration in the membranes. In contrast, water uptake and proton conductivity of membranes continuously increased with increasing TiO2-PSSA concentrations, presumably due to hygroscopic, soft conducting property of nanoparticles. The results of thermal gravimetric analysis (TGA) also showed that all the membranes were stable at least up to 280 °C.",

author = "Park, {Jung Tae} and Koh, {Joo Hwan} and Roh, {Dong Kyu} and Shul, {Yong Gun} and Kim, {Jong Hak}",

note = "Funding Information: This work was supported by the National Research Foundation (NRF) grant funded by the Korea government (MEST) through the Pioneer Research Center Program (2008-05103) and the Korea Center for Artificial Photosynthesis (KCAP) located in Sogang University (NRF-2009-C1AAA001-2009-0093879). This work was also supported by New & Renewable Energy R&D program (2009T100100606) under the Ministry of Knowledge Economy, Republic of Korea.",

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AU - Park, Jung Tae

AU - Koh, Joo Hwan

AU - Roh, Dong Kyu

AU - Shul, Yong Gun

AU - Kim, Jong Hak

N1 - Funding Information: This work was supported by the National Research Foundation (NRF) grant funded by the Korea government (MEST) through the Pioneer Research Center Program (2008-05103) and the Korea Center for Artificial Photosynthesis (KCAP) located in Sogang University (NRF-2009-C1AAA001-2009-0093879). This work was also supported by New & Renewable Energy R&D program (2009T100100606) under the Ministry of Knowledge Economy, Republic of Korea.

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N2 - Bifunctional TiO2 nanoparticles with hygroscopic and proton-conductive properties were synthesized by grafting proton-conducting polymer, i.e. poly(styrene sulfonic acid) (PSSA) from TiO2 nanoparitlces via surface-initiated atom transfer radical polymerization (ATRP). These bifunctional TiO2-PSSA nanoparticles were blended with poly(vinylidene fluoride-co-chlorotrifluoroethylene)-graft-poly(styrene sulfonic acid), i.e. P(VDF-co-CTFE)-g-PSSA to give proton-conducting membranes for high temperature fuel cells. FT-IR, UV-visible spectroscopy and X-ray diffraction (XRD) results revealed bifunctional properties of TiO2-PSSA nanoparticles due to successful grafting of PSSA chains. Ion exchange capacity (IEC) of P(VDF-co-CTFE)-g-PSSA/TiO2-PSSA membranes was not significantly changed irrespective of TiO2-PSSA concentrations, representing almost fixed SO3- concentration in the membranes. In contrast, water uptake and proton conductivity of membranes continuously increased with increasing TiO2-PSSA concentrations, presumably due to hygroscopic, soft conducting property of nanoparticles. The results of thermal gravimetric analysis (TGA) also showed that all the membranes were stable at least up to 280 °C.

AB - Bifunctional TiO2 nanoparticles with hygroscopic and proton-conductive properties were synthesized by grafting proton-conducting polymer, i.e. poly(styrene sulfonic acid) (PSSA) from TiO2 nanoparitlces via surface-initiated atom transfer radical polymerization (ATRP). These bifunctional TiO2-PSSA nanoparticles were blended with poly(vinylidene fluoride-co-chlorotrifluoroethylene)-graft-poly(styrene sulfonic acid), i.e. P(VDF-co-CTFE)-g-PSSA to give proton-conducting membranes for high temperature fuel cells. FT-IR, UV-visible spectroscopy and X-ray diffraction (XRD) results revealed bifunctional properties of TiO2-PSSA nanoparticles due to successful grafting of PSSA chains. Ion exchange capacity (IEC) of P(VDF-co-CTFE)-g-PSSA/TiO2-PSSA membranes was not significantly changed irrespective of TiO2-PSSA concentrations, representing almost fixed SO3- concentration in the membranes. In contrast, water uptake and proton conductivity of membranes continuously increased with increasing TiO2-PSSA concentrations, presumably due to hygroscopic, soft conducting property of nanoparticles. The results of thermal gravimetric analysis (TGA) also showed that all the membranes were stable at least up to 280 °C.

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