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  Self-Assembled Ruddlesden–Popper/Perovskite Hybrid with Lattice-Oxygen Activation as a Superior Oxygen Evolution Electrocatalyst

Zhu, Y., Lin, Q., Hu, Z., Chen, Y., Yin, Y., Tahini, H. A., Lin, H.-J., Chen, C.-T., Zhang, X., Shao, Z., & Wang, H. (2020). Self-Assembled Ruddlesden–Popper/Perovskite Hybrid with Lattice-Oxygen Activation as a Superior Oxygen Evolution Electrocatalyst. Small, pp. 1-7. doi:10.1002/smll.202001204.

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アイテムのパーマリンク: https://hdl.handle.net/21.11116/0000-0006-52ED-3 版のパーマリンク: https://hdl.handle.net/21.11116/0000-0006-568A-E
資料種別: 学術論文

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 作成者:
Zhu, Yinlong1, 著者
Lin, Qian1, 著者
Hu, Zhiwei2, 著者           
Chen, Yubo1, 著者
Yin, Yichun1, 著者
Tahini, Hassan A.1, 著者
Lin, Hong-Ji1, 著者
Chen, Chien-Te1, 著者
Zhang, Xiwang1, 著者
Shao, Zongping1, 著者
Wang, Huanting1, 著者
所属:
1External Organizations, ou_persistent22              
2Zhiwei Hu, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863461              

内容説明

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キーワード: electronic structure, hybrid construction, lattice-oxygen activation, oxygen evolution reaction, synergistic effects, Chemical activation, Electrocatalysts, Energy conversion, Iron compounds, Lanthanum compounds, Metals, Oxygen evolution reaction, Perovskite, Potassium hydroxide, Ruthenium compounds, Strontium compounds, Energy applications, Energy conversion technologies, High catalytic performance, Hybrid construction, Oxygen evolution reaction (oer), Perovskite phase, Proof of concept, Self-assembly method, Catalyst activity
 要旨: The oxygen evolution reaction (OER) is pivotal in multiple gas-involved energy conversion technologies, such as water splitting, rechargeable metal–air batteries, and CO2/N2 electrolysis. Emerging anion-redox chemistry provides exciting opportunities for boosting catalytic activity, and thus mastering lattice-oxygen activation of metal oxides and identifying the origins are crucial for the development of advanced catalysts. Here, a strategy to activate surface lattice-oxygen sites for OER catalysis via constructing a Ruddlesden–Popper/perovskite hybrid, which is prepared by a facile one-pot self-assembly method, is developed. As a proof-of-concept, the unique hybrid catalyst (RP/P-LSCF) consists of a dominated Ruddlesden–Popper phase LaSr3Co1.5Fe1.5O10-δ (RP-LSCF) and second perovskite phase La0.25Sr0.75Co0.5Fe0.5O3-δ (P-LSCF), displaying exceptional OER activity. The RP/P-LSCF achieves 10 mA cm−2 at a low overpotential of only 324 mV in 0.1 m KOH, surpassing the benchmark RuO2 and various state-of-the-art metal oxides ever reported for OER, while showing significantly higher activity and stability than single RP-LSCF oxide. The high catalytic performance for RP/P-LSCF is attributed to the strong metal–oxygen covalency and high oxygen-ion diffusion rate resulting from the phase mixture, which likely triggers the surface lattice-oxygen activation to participate in OER. The success of Ruddlesden–Popper/perovskite hybrid construction creates a new direction to design advanced catalysts for various energy applications. © 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

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言語: eng - English
 日付: 2020-04-012020-04-01
 出版の状態: 出版
 ページ: -
 出版情報: -
 目次: -
 査読: -
 識別子(DOI, ISBNなど): DOI: 10.1002/smll.202001204
 学位: -

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出版物 1

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出版物名: Small
  その他 : Small
種別: 学術雑誌
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出版社, 出版地: Weinheim, Germany : Wiley
ページ: - 巻号: - 通巻号: 2001204 開始・終了ページ: 1 - 7 識別子(ISBN, ISSN, DOIなど): ISSN: 1613-6810
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000017440_1