In-situ reconstructed Ru atom array on α-MnO2 with enhanced performance for acidic water oxidation
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- Aug 26, 2023
- 1 min read
Chao Lin, Ji-Li Li, Xiaopeng Li, Shuai Yang, Wei Luo, Yaojia Zhang, Sung-Hae Kim, Dong-Hyung Kim, Sambhaji S. Shinde, Ye-Fei Li, Zhi-Pan Liu, Zheng Jiang & Jung-Ho Lee
Abstract
The development of acid-stable oxygen evolution reaction electrocatalysts is essential for high-performance water splitting. Here, we report an electrocatalyst with Ru-atom-array patches supported on α-MnO2 (Ru/MnO2) for the oxygen evolution reaction following a mechanism that involves only *O and *OH species as intermediates. This mechanism allows direct O–O radical coupling for O2 evolution. Ru/MnO2 shows high activity (161 mV at 10 mA cm−2) and outstanding stability with small degradation after 200 h operation, making it one of the best-performing acid-stable oxygen evolution reaction catalysts. Operando vibrational and mass spectroscopy measurements were performed to probe the reaction intermediates and gaseous products for validating the oxygen evolution reaction pathway. First-principles calculations confirmed the cooperative catalysis mechanism with a reduced energy barrier. Time-dependent elemental analysis demonstrated the occurrence of the in-situ dynamic cation exchange reaction during the oxygen evolution reaction, which is the key for triggering the reconstruction of Ru atoms into the ordered array with high durability.
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What an impressive study highlighting the in-situ reconstructed Ru atom array on α-MnO2 and its impact on enhancing acidic water oxidation! The collaboration among such skilled researchers shows how innovation and teamwork can drive real progress in catalytic science. Insights like these are invaluable for advancing sustainable energy solutions. Just as groundbreaking research deserves global visibility, authors and publishers can rely on ebook marketing services to effectively share their findings and reach a wider scientific and professional audience.
I am truly impressed by the work of Chao Lin, Ji-Li Li, Xiaopeng Li, Shuai Yang, Wei Luo, Yaojia Zhang, Sung-Hae Kim, Dong-Hyung Kim, Sambhaji S. Shinde, Ye-Fei Li, Zhi-Pan Liu, Zheng Jiang and Jung-Ho Lee on developing acid-stable oxygen evolution reaction electrocatalysts, which opens a new path for high-performance water splitting. It reminds me of Sprunki Game, where every move requires smart strategy to achieve optimal results, just like how scientists optimize catalysts. I encourage the scientific community and investors to take interest, share, and support this research for rapid real-world application.