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나노입자 연구단
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Ultra-low loading of IrO2 with an inverse-opal structure in a polymer-exchange membrane water electrolysis

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Title
Ultra-low loading of IrO2 with an inverse-opal structure in a polymer-exchange membrane water electrolysis
Author(s)
Ji Eun Park; Sungjun Kim; Kim O.-H.; Chi-Yeong Ahn; Mi-Ju Kim; Kang S.Y.; Jeon T.I.; Shim J.-G.; Lee D.W.; Lee J.H.; Cho Y.-H.; Yung-Eun Sung
Publication Date
2019-04
Journal
NANO ENERGY, v.58, no., pp.158 - 166
Publisher
ELSEVIER SCIENCE BV
Abstract
In this study, an iridium oxide (IrO2) inverse-opal membrane-electrode assembly (inverse-opal MEA) was fabricated via the decal-transfer method for an anode in polymer-electrolyte membrane water electrolysis (PEMWE) to decrease the loading of the noble catalyst. Electrodeposition parameters including current and total number of cycles were investigated to achieve the IrO2 inverse-opal electrode. The inverse-opal MEA with ultra-low loading exhibited outstanding performance that exceeded or was comparable to that obtained in other PEMWE studies. Additionally, it exhibited higher performance and lower ohmic and charge-transfer resistance when compared with that of commercial IrO2. Furthermore, the performance corresponded to the highest mass activity reported to date since the loading in the inverse-opal MEA was ultra-low. This was because the inverse-opal structure improved electron transfer owing to the interconnected pores and increased the surface area due to high porosity, thereby leading to the enhanced utilization of the catalyst. © 2019 Elsevier Ltd.
URI
https://pr.ibs.re.kr/handle/8788114/6594
ISSN
2211-2855
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > Journal Papers (저널논문)
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[Nano Energy]Ultra-low loading of IrO2 with an inverse-opal structure in a polymer-exchange membrane water electrolysis.pdfDownload

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