[PUBLISHER] Merge #101

content/readings/papers/ir-single-atoms-boost-niooh-formation-and-oer.md

@@ -0,0 +1,31 @@
+---
+tags:
+  - paper/unviewed/sciences/chemistry/electrocatalysis
+  - paper/unviewed/sciences/chemistry/phase-transition
+dg-publish: true
+maturity: raindrop
+Journal: Journal of the American Chemical Society
+Year: 2024
+DOI: 10.1021/jacs.3c13746
+title: Ir single atoms boost metal–oxygen covalency on NiOOH for enhanced OER activity
+date: 2024-03-09T15:13
+update: 2024-03-09T22:06
+---
+
+Ir Single Atoms Boost Metal–Oxygen Covalency on Selenide-Derived NiOOH for Direct Intramolecular Oxygen Coupling
+
+- Type: Journal Article
+- Author: Yin, Zhao-Hua; Huang, Yuan; Song, Kepeng; Li, Tian-Tian; Cui, Jun-Yuan; Meng, Chao; Zhang, Huigang; Wang, Jian-Jun
+- Journal: Journal of the American Chemical Society
+    - Volume: Not supported.
+    - Issue: Not supported.
+    - Pages: Not supported.
+- Year: 2024
+- DOI: 10.1021/jacs.3c13746
+
+# Abstract
+This investigation probes the intricate interplay of catalyst dynamics and reaction pathways during the oxygen evolution reaction (OER), highlighting the significance of atomic-level and local ligand structure insights in crafting highly active electrocatalysts. Leveraging a tailored ion exchange reaction followed by electrochemical dynamic reconstruction, we engineered a novel catalytic structure featuring single Ir atoms anchored to NiOOH (Ir<sub>1</sub>@NiOOH). This novel approach involved the strategic replacement of Fe with Ir, facilitating the transition of selenide precatalysts into active (oxy)hydroxides. This elemental substitution promoted an upward shift in the O 2p band and intensified the metal–oxygen covalency, thereby altering the OER mechanism toward enhanced activity. The shift from a single-metal site mechanism (SMSM) in NiOOH to a dual-metal-site mechanism (DMSM) in Ir<sub>1</sub>@NiOOH was substantiated by in situ differential electrochemical mass spectrometry (DEMS) and supported by theoretical insights. Remarkably, the Ir<sub>1</sub>@NiOOH electrode exhibited exceptional electrocatalytic performance, achieving overpotentials as low as 142 and 308 mV at current densities of 10 and 1000 mA cm<sup>–2</sup>, respectively, setting a new benchmark for the electrocatalysis of OER.
+
+# Files and Links
+- **Url**: https://doi.org/10.1021/jacs.3c13746
+- **Local Library**: [Zotero](zotero://select/library/items/ZP3RYUBR)