TiO<sub>2</sub> and ZrO<sub>2</sub> are well known metal oxides that have been extensively used in a variety of applications. Among such a variety of applications, hollow-structured hydrophilic TiO<sub>2</sub> nanop...
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https://www.riss.kr/link?id=A105401795
2018
-
500
학술저널
214-214(1쪽)
0
상세조회0
다운로드다국어 초록 (Multilingual Abstract)
TiO<sub>2</sub> and ZrO<sub>2</sub> are well known metal oxides that have been extensively used in a variety of applications. Among such a variety of applications, hollow-structured hydrophilic TiO<sub>2</sub> nanop...
TiO<sub>2</sub> and ZrO<sub>2</sub> are well known metal oxides that have been extensively used in a variety of applications. Among such a variety of applications, hollow-structured hydrophilic TiO<sub>2</sub> nanoparticles (HTiO<sub>2</sub>) with high specific surface areas are used as a part of dual catalyst electrode in self-humidifying PEMFC. Pt-metal oxide layer are placed between Pt/C layer and membrane. Pt-metal oxide, specifically Pt-HTiO<sub>2</sub> functions for the generation of water molecules by Pt sites and its retention by hydrophilic HTiO<sub>2</sub>. The generation of water molecules on Pt sites becomes possible through the consumption of H<sub>2</sub> and O<sub>2</sub> crossing the membrane, finally making the operation of PEMFC under zerohumidity. In this study, well-defined Pt-hollowed structured TiO<sub>2</sub> (Pt-HTiO<sub>2</sub>) was synthesized and its physical properties were confirmed by various analytical tools such as XRD, BET, SEM and TEM. The cell performance was evaluated under various relative humidity (i.e. RH 100 %, 60 %, 40 % and 0 %).
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