We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Introducing Fe<sup>2+</sup> into Nickel–Iron Layered Double Hydroxide: Local Structure Modulated Water Oxidation Activity.
- Authors
Cai, Zhao; Zhou, Daojin; Wang, Maoyu; Bak, Seong‐Min; Wu, Yueshen; Wu, Zishan; Tian, Yang; Xiong, Xuya; Li, Yaping; Liu, Wen; Siahrostami, Samira; Kuang, Yun; Yang, Xiao‐Qing; Duan, Haohong; Feng, Zhenxing; Wang, Hailiang; Sun, Xiaoming
- Abstract
Abstract: Exploring materials with regulated local structures and understanding how the atomic motifs govern the reactivity and durability of catalysts are a critical challenge for designing advanced catalysts. Herein we report the tuning of the local atomic structure of nickel–iron layered double hydroxides (NiFe‐LDHs) by partially substituting Ni2+ with Fe2+ to introduce Fe‐O‐Fe moieties. These Fe2+‐containing NiFe‐LDHs exhibit enhanced oxygen evolution reaction (OER) activity with an ultralow overpotential of 195 mV at the current density of 10 mA cm−2, which is among the best OER catalytic performance to date. In‐situ X‐ray absorption, Raman, and electrochemical analysis jointly reveal that the Fe‐O‐Fe motifs could stabilize high‐valent metal sites at low overpotentials, thereby enhancing the OER activity. These results reveal the importance of tuning the local atomic structure for designing high efficiency electrocatalysts.
- Subjects
IRON-nickel alloys; HYDROXIDES; OXYGEN evolution reactions; ATOMIC structure; ATOMIC physics
- Publication
Angewandte Chemie, 2018, Vol 130, Issue 30, p9536
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201804881