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2022-12-14T03:46:10Z
1309:1310
Synthesis of ordered mesoporous ruthenium by lyotropic liquid crystals and its electrochemical conversion to mesoporous ruthenium oxide with high surface area
Sugimoto, Wataru
Makino, Sho
Mukai, Ryota
Tatsumi, Yoshiaki
Fukuda, Katsutoshi
Takasu, Yoshio
Yamauchi, Yusuke
Mesoporous materials
Electrochemistry
Lyotropic liquid crystal
Supramolecular templating
Electrochemical capacitor
Ruthenium black
In ordered to prepare high capacitance pseudo-capacitive oxides, it is important to design nanostructures with appreciable mesopores. Supramolecular templating has become a popular method to synthesize ordered mesoporous metals; however, the application of the same technique to synthesis of high surface area oxides is more demanding. We present here, the synthesis of ordered mesoporous ruthenium metal by lyotropic liquid crystal templating and its electrochemical conversion to ordered mesoporous ruthenium oxide by a simple, room temperature procedure. The bulk, unsupported metallic ordered mesoporous ruthenium exhibits high surface area of 110 m(2) g(-1), which is comparable to typical supported Ru nanoparticles. The oxide analogue gives a high specific capacitance of 376 Fg(-1), owing to the porous structure. These results demonstrate a possible facile and generic process to synthesize oxides with ordered nanostructures by utilization of the various phases that can be obtained with lyotropic liquid crystalline templates such as cubic, hexagonal, lamellar, etc.
Article
JOURNAL OF POWER SOURCES. 204:244-248 (2012)
journal article
ELSEVIER SCIENCE BV
2012-04-15
application/pdf
JOURNAL OF POWER SOURCES
204
244
248
0378-7753
AA00705373
https://soar-ir.repo.nii.ac.jp/record/13367/files/Synthesis_Ordered_Mesoporous_Ruthenium_Lyotropic_Liquid_Crystals.pdf
eng
10.1016/j.jpowsour.2011.12.033
https://doi.org/10.1016/j.jpowsour.2011.12.033
Copyright© 2011 Elsevier B.V.