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Author

Lee, Sang-Young
Energy Soft-Materials Lab (ESML)
Research Interests
  • Soft Materials for Energy Storage/ Conversion Systems

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Control of nanoparticle dispersion in SPAES/SiO2 composite proton conductors and its influence on DMFC membrane performance

Cited 17 times inthomson ciCited 16 times inthomson ci
Title
Control of nanoparticle dispersion in SPAES/SiO2 composite proton conductors and its influence on DMFC membrane performance
Author
Yoon, Kyung-SukChoi, Jong-HoHong, Young TaikHong, Sung-KwonLee, Sang-Young
Keywords
DMFC membrane performance; Nanoparticle dispersion; SPAES/SiO2 composite membranes; Wet-type milling
Issue Date
200907
Publisher
ELSEVIER SCIENCE INC
Citation
ELECTROCHEMISTRY COMMUNICATIONS, v.11, no.7, pp.1492 - 1495
Abstract
A novel approach for effectively dispersing SiO2 nanoparticles in a sulfonated poly(arylene ether sulfone) ionomer (SPAES) matrix has been demonstrated. It is based on the application of wet-type milling process. Compared to a conventional mixing process such as sonication, wet-type milling allowed noticeable improvements in SiO2 nanoparticle dispersion, owing to the intensive impact of collisions between milling beads and nanoparticles. In terms of nanoparticle dispersion, the influence of wet-type milling on the direct methanol fuel cells (DMFC) membrane performance such as proton conductivity, methanol permeability, and selectivity was examined and compared with sonication process. This study underlines that nanoparticle dispersion in the composite membranes is crucial in determining DMFC membrane performance and can be substantially improved by employing a novel mixing process, i.e. wet-type milling.
URI
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DOI
http://dx.doi.org/10.1016/j.elecom.2009.05.038
ISSN
1388-2481
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ECHE_Journal Papers

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