Inorganic Organic Hybrid Porous Silica for Fuel Cell Technology

Author

Mal, Nawal Kishor ; Hinokuma, Koichiro

Author_Institution

Adv. Mater. & Green Chem., Tata Chem. Innovation Centre, Pune, India

fYear

2011

fDate

8-10 Dec. 2011

Firstpage

1

Lastpage

6

Abstract

30 mol% HS/SO₃H containing inorganic organic Hybrid Porous Silica (HO₃S-HPS) and polymer polyvinyledenefluoride-hexafluropropene (PVDF-HFP) was mixed together to produce 10 to 150 thick membrane (SO₃H-HPS-PVDF-HFP). Proton conductivity of resultant HO₃S-HPS before and after mixing with PVDF-HFP determined in dry nitrogen and 100% relative humidity (RH) using impedance spectroscopy. 30 mol% SO₃H-HPS-PVDF-HFP shows proton conductivity ca. 10^-2 S/cm. Nafion117 also shows proton conductivity 10^-2 S/cm at 25 °C and 100% relative humidity. Membrane electrode assembly (MEA) was developed and used in direct methanol fuel cell technology. 64 mW/cm" power density of the MEA using single cell was observed at 80 °C. Materials were characterized using various instrumental techniques, such as ICP, XRD, TG-DTA, XPS, N₂ sorption, ²⁹Si and ¹³C MAS NMR, FT-IR and particle size analyzer.

Keywords

X-ray diffraction; X-ray photoelectron spectra; differential thermal analysis; direct methanol fuel cells; ionic conductivity; nuclear magnetic resonance; (PVDF-HFP); HS-SO₃H; ICP; MAS NMR; Nafionll7; TG-DTA; XPS; XRD; direct methanol fuel cell technology; impedance spectroscopy; inorganic organic hybrid porous silica; instrumental techniques; membrane electrode assembly; particle size analyzer; polyvinyledenefluoride-hexafluropropene; proton conductivity; relative humidity; Carbon; Conductivity; Fuel cells; Methanol; Nuclear magnetic resonance; Protons; Silicon compounds;

fLanguage

English

Publisher

ieee

Conference_Titel

Nanoscience, Technology and Societal Implications (NSTSI), 2011 International Conference on

Conference_Location

Bhubaneswar

Print_ISBN

978-1-4577-2035-2

Type

conf

DOI

10.1109/NSTSI.2011.6111805

Filename

6111805