Ruthenium-iridium nanosized coral: Difference between revisions
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The research team at Kyoto University published their work in February 2021 and presented it at the [[Chemical Society of Japan]] 101. General Meeting in March 2021.<ref name="RuIr-NC presentation at 101. CSJ annual meeting"> |
The research team at Kyoto University published their work in February 2021 and presented it at the [[Chemical Society of Japan]] 101. General Meeting in March 2021.<ref name="RuIr-NC presentation at 101. CSJ annual meeting"> |
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|url=https://confit.atlas.jp/guide/event/csj101st/subject/A02- |
|url=https://confit.atlas.jp/guide/event/csj101st/subject/A02-4am-06/advanced |
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|title=Crystal-structure-controlled solid-solution alloy nanoparticles and their hydrogen evolution reaction performance |
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|date=2021-03- |
|date=2021-03-22 |
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|publisher=[[Chemical Society of Japan]] |
|publisher=[[Chemical Society of Japan]] |
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Revision as of 11:23, 8 June 2021
 | This article reads like a press release or a news article and may be largely based on routine coverage. (June 2021) |
Ruthenium-Iridium nanosized corals (RuIr-NC) are electrodes consisting of nanosized anisotropic ruthenium-iridium sheets for efficient electrolysis of water in acid discovered in the Kyoto University.[1][2]
The RuIr-NC were discovered unintentionally, but then investigated and refined at the Kyoto University for the purpose of efficient electrolysis of water in acid and found to have very promising qualities in terms of performance and durability.[1]
As of 2021 the researchers at Kyoto University report their RuIr-NC are composed of 94% ruthenium and 6% iridium and take the form of 3 nm thick sheets with a mean diameter of 57 ± 7 nm arranged in a hexagonal closed-packed crystalline lattice plane structure.[1][2]. The researchers found them suitable for use as both oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) electrodes.[1]
Their home-made water splitting cell using RuIr-NC as both OER and HER electrodes is able to achieve 10 mA cm−2geo at 1.485 V for 120 h without noticeable degradation. They report that, of the electrodes they evaluated for water electrolysis in acid, the RuIr-NC shows the highest intrinsic activity and stability.[1]
The RuIr-NC is obtained by adding a mixture of RuCl3·nH2O and H2IrCl6 aqueous solutions to triethylene glycol solution containing polyvinylpyrrolidone at 230 °C.[1].
The research team at Kyoto University published their work in February 2021 and presented it at the Chemical Society of Japan 101. General Meeting in March 2021.[3]
References
- ^ a b c d e f Wu, Dongshuang; Kusada, Kohei; Yoshioka, Satoru; Yamamoto, Tomokazu; Toriyama, Takaaki; Matsumura, Syo; Chen, Yanna; Seo, Okkyun; Kim, Jaemyung; Song, Chulho; Hiroi, Satoshi; Sakata, Osami; Ina, Toshiaki; Kawaguchi, Shogo; Kubota, Yoshiki; Kobayashi, Hirokazu; Hiroshi, Kitagawa (2021-02-16), "Efficient overall water splitting in acid with anisotropic metal nanosheets", Nature Communications, doi:10.1038/s41467-021-20956-4
- ^ a b
"Efficient production of hydrogen from water with new OER electrocatalyst – Success at Kyoto University - Highly stable atomic structure achieved with precision control". Science Japan. Japan Science and Technology Agency. 2021-04-26. Retrieved 2021-06-07.
A research group led by Kohei Kusada, Program-Specific Associate Professor at the Hakubi Center for Advanced Research, Kyoto University and Professor Hiroshi Kitagawa and Program-Specific Assistant Professor Dongshuang Wu of the Graduate School of Science, Kyoto University, have succeeded in developing a water electrolysis catalyst that is 1,000 times more active and 10 times more stable than existing catalysts.
- ^ "Crystal-structure-controlled solid-solution alloy nanoparticles and their hydrogen evolution reaction performance". Chemical Society of Japan. 2021-03-22. Retrieved 2021-06-07.
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