“Special Study Group on Corrosion and Lifetime of Materials” Web site opened.
The website of “Special Research Group on Corrosion and Lifetime of Materials” led by Assoc. Prof. Yagi is now open. Photo Gallery related to corrosion and corrosion protection is now available.
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An academic paper by our student Mr. Wang Wencong et al. on oxygen reduction catalysts has been accepted for publication in Journal of Alloys and Compounds.
Perovskite-type oxides (LaMn)1-xO3 with non-stoichiometric compositions of varying cationic vacancies were synthesized to investigate the effect of Mn-O bond length on the catalytic activity for oxygen reduction, and a mechanism was proposed.
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Mr. Hiroki Kajikawa, a second-year student at Joso Gakuin High School, whom Assoc. Prof. Yagi is supervising in the GSC program of the University of Tokyo, was featured in the Asahi Shimbun EduA web edition.
The 16th Workshop on Reactive Metal Processing (RMW16) will be held at MIT, USA.
RMW16 will be held at Massachusetts Institute of Technology (MIT), USA, from March 24 to 25, 2023. This workshop, initiated by Prof. Toru H. Okabe of our university and Prof. Sadoway of MIT, added me Assoc. Prof. Yagi and Prof. Allanore of MIT as the organizers, and expanded its scope from resources, refining, and recycling to energy materials and devices. This workshop has become a forum for international discussions among university and corporate researchers who are active at the forefront of this field around the world. If you are interested in attending, please contact us.
An academic paper on positive electrode active materials for magnesium rechargeable batteries by our former student Dr. Jonghyun Han et al. was selected as an supplementary cover art of The Journal of Physical Chemistry C.
An academic paper on positive electrode active materials for magnesium rechargeable batteries by our former student Dr. Jonghyun Han et al. has been accepted for publication in The Journal of Physical Chemistry C.
The mechanism of catalytic activity of positive electrode active materials for magnesium rechargeable batteries for oxidative and reductive decomposition reactions of electrolyte was comprehensively explained by a combination of experiments and calculations. Based on this mechanism, we proposed one of the design guidelines for positive electrode active materials. This is the result of joint research with Prof. Ichitsubo at Institute for Materials Research, Tohoku University and Prof. Nakayama at Nagoya Institute of Technology.
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An academic paper by our student Mr. Liu Wei et al. on oxygen evolution catalysts has been accepted for publication in Materials Advances.
We have investigated the effect of ions occupying the tetrahedral sites of spinel oxides on the catalytic activity for oxygen evolution reaction. In particular, we found that dissolution of Zn ions occupying the tetrahedral sites leads to cation defects, which facilitates adsorption of reaction intermediates, thereby enhancing the activity. We also showed that a large amount of cation defects leads to structural instability and lower activity.
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An academic paper on oxygen evolution catalyst by our student Mr. Wei Liu and graduate Mr. Kodai Kawano was selected as the Inside Back Cover of Small journal.
An academic paper by our student Mr. Liu Wei and a graduate Mr. Kodai Kawano et al. on oxygen evolution catalysts has been accepted for publication in Small.
Various types of highly active oxygen evolution oxide catalysts have been reported. However, most of them dissolve in acidic aqueous solutions due to their oxide nature. In this study, in cooperation with Prof. Ikuya Yamada’s Group at Osaka Metropolitan University, we synthesized a quadruple perovskite ruthenium oxide ACu3Ru4O12 with high stability in acidic aqueous solutions. Furthermore, we changed the valence of the Cu ion by substituting the A-site cation and clarified the correlation with the catalytic activity for the oxygen evolution reaction, and found that the oxygen evolution reaction proceeds with a dual-site mechanism involving both Ru and Cu.
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