Self-Assembly of Ir-Based Nanosheets with Ordered Interlayer Space for Enhanced Electrocatalytic Water Oxidation

L Zu; X Qian; S Zhao; Q Liang; YE Chen; M Liu; BJ Su; KH Wu; L Qu; L Duan; H Zhan; JY Zhang; C Li; W Li; JY Juang; J Zhu; D Li; A Yu; D Zhao

Journal article

Self-Assembly of Ir-Based Nanosheets with Ordered Interlayer Space for Enhanced Electrocatalytic Water Oxidation

L Zu, X Qian, S Zhao, Q Liang, YE Chen, M Liu, BJ Su, KH Wu, L Qu, L Duan, H Zhan, JY Zhang, C Li, W Li, JY Juang, J Zhu, D Li, A Yu, D Zhao

Journal of the American Chemical Society | Published : 2022

DOI: 10.1021/jacs.1c11241

Abstract

Iridium (Ir)-based electrocatalysts are widely explored as benchmarks for acidic oxygen evolution reactions (OERs). However, further enhancing their catalytic activity remains challenging due to the difficulty in identifying active species and unfavorable architectures. In this work, we synthesized ultrathin Ir-IrOx/C nanosheets with ordered interlayer space for enhanced OER by a nanoconfined self-assembly strategy, employing block copolymer formed stable end-merged lamellar micelles. The interlayer distance of the prepared Ir-IrOx/C nanosheets was well controlled at ∼20 nm and Ir-IrOx nanoparticles (∼2 nm) were uniformly distributed within the nanosheets. Importantly, the fabricated Ir-IrOx..

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University of Melbourne Researchers

Dan Li Author

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Grants

Awarded by Australian Research Council

Funding Acknowledgements

This work is supported by the State Key Basic Research Program of China (Grants 2018YFA0209401 and 2017YFA0207303), the National Science Foundation of China (Grant 21733003), Science and Technology Commission of Shanghai Municipality (Grant 17JC1400100), China Postdoctoral Science Foundation (Grant 2019M651347), and Australian Research Council (ARC) (Grants IH140100035, DE190100445, LE110100223, DE220100676, and LE0454166).