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  1. NTU Scholars
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Please use this identifier to cite or link to this item: https://scholars.lib.ntu.edu.tw/handle/123456789/427185
Title: An Amorphous Nickel–Iron-Based Electrocatalyst with Unusual Local Structures for Ultrafast Oxygen Evolution Reaction
Authors: Chen, G.
Zhu, Y.
Chen, H.M. 
Hu, Z.
Hung, S.-F.
Ma, N.
Dai, J.
Lin, H.-J.
Chen, C.-T.
Zhou, W.
Shao, Z.
Keywords: amorphous; local structure; NiFe; oxygen evolution reaction; perovskites
Issue Date: 2019
Journal Volume: 31
Journal Issue: 28
Start page/Pages: 1900883
Source: Advanced Materials
Abstract: 
Rationally designing active and durable catalysts for the oxygen evolution reaction (OER) is of primary importance in water splitting. Perovskite oxides (ABO3) with versatile structures and multiple physicochemical properties have triggered considerable interest in the OER. The leaching of A site cations can create nanostructures and amorphous motifs on the perovskite matrix, thus facilitating the OER process. However, selectively dissolving A site cations and simultaneously obtaining more active amorphous motifs derived from the B site cations remains a great challenge. Herein, a top-down strategy is proposed to transform bulk crystalline perovskite (LaNiO3) into a nanostructured amorphous hydroxide by FeCl3 post-treatment, resulting in an extremely low overpotential of 189 mV at 10 mA cm−2. The top-down-constructed amorphous catalyst with a large surface area has dual NiFe active sites, where high-valence Ni3+-based edge-sharing octahedral frameworks are surrounded by interstitial distorted Fe octahedra and contribute to the superior OER performance. This top-down strategy provides a valid way to design novel perovskite-derived catalysts. © 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
URI: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85066051768&doi=10.1002%2fadma.201900883&partnerID=40&md5=3a54b79667d7c9072101599482f36ecf
https://scholars.lib.ntu.edu.tw/handle/123456789/427185
DOI: 10.1002/adma.201900883
metadata.dc.subject.other: Amorphous materials; Binary alloys; Catalyst activity; Chlorine compounds; Electrocatalysts; Iron; Iron compounds; Lanthanum compounds; Nickel; Oxygen; Physicochemical properties; Positive ions; Amorphous catalysts; Bulk crystalline; Large surface area; Local structure; NiFe; Octahedral frameworks; Oxygen evolution reaction; Perovskite oxides; Perovskite
[SDGs]SDG7
Appears in Collections:化學系

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臺大位居世界頂尖大學之列,為永久珍藏及向國際展現本校豐碩的研究成果及學術能量,圖書館整合機構典藏(NTUR)與學術庫(AH)不同功能平台,成為臺大學術典藏NTU scholars。期能整合研究能量、促進交流合作、保存學術產出、推廣研究成果。

To permanently archive and promote researcher profiles and scholarly works, Library integrates the services of “NTU Repository” with “Academic Hub” to form NTU Scholars.

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開放取用是從使用者角度提升資訊取用性的社會運動,應用在學術研究上是透過將研究著作公開供使用者自由取閱,以促進學術傳播及因應期刊訂購費用逐年攀升。同時可加速研究發展、提升研究影響力,NTU Scholars即為本校的開放取用典藏(OA Archive)平台。(點選深入了解OA)

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