Selected applications of operando Raman spectroscopy in electrocatalysis research

被引：14
|
作者：
Liu, Si [1 ]
D'Amario, Luca [1 ,2 ]
Jiang, Shan [1 ]
Dau, Holger [1 ]
机构：
[1] Free Univ Berlin, Dept Phys, Arnimallee 14, D-14195 Berlin, Germany
[2] Angstrom Lab, Dept Chem, Lagerhyddsvagen 1, S-75120 Uppsala, Sweden
来源：
CURRENT OPINION IN ELECTROCHEMISTRY | 2022年 / 35卷
基金：
瑞典研究理事会;
关键词：
Electrocatalytic reactions; In-situ spectroscopy; Material dynamics; Electrolyte interface; Surface-enhanced Raman spectroscopy (SERS); Oxygen evolution reaction (OER); CO2 reduction reaction (CO2RR); Local pH; CO2; REDUCTION; HYDROGEN EVOLUTION; SURFACE; ELECTRODES; SCATTERING; DEPENDENCE; CATALYSTS; OXIDE;
D O I：
10.1016/j.coelec.2022.101042
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Knowledge-guided improvement of electrocatalytic materials is facilitated by insight in determinants of activity, selectivity, and stability. Catalyst re-construction, surface adsorbates and reaction intermediates, and the mechanistic role of the electrolyte can be addressed by operando (= in situ) Raman spectroscopy, where Raman scattering is detected during electrochemical operation. After outlining the basic experimental technology and addressing the light-damage problem, selected applications in electrocatalysis research are reviewed: (1) Redox-state changes of the catalyst material induced by electrode potentials are traced by operando Raman spectroscopy. (2) Surface-bound (adsorbed) educt, products and reaction intermediates are detected using surface-enhanced Raman spectroscopy (SERS). (3) Local-pH values are determined at the catalyst-electrolyte interface, with spatial resolution at the visible-light diffraction limit.
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页数：10
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