Exploring the Cation Regulation Mechanism for Interfacial Water Involved in the Hydrogen Evolution Reaction by In Situ Raman Spectroscopy

• DOI: 10.1007/s40820-023-01285-1
• Publication Date: 2023-12-18T15:02:14Z
• Authors: Xueqiu You; Dongao Zhang; Xia-Guang Zhang; Xiangyu Li; Jing-Hua Tian; Yao-Hui Wang; Jian-Feng Li
• Keywords: 0301 basic medicine; Technology; Interfacial water; Cations; T; In situ Raman; Hydrogen evolution reaction; Article; 0104 chemical sciences

Interfacial water molecules are the most important participants in hydrogen evolution reaction (HER). Hence, understanding behavior and role that interfacial plays will ultimately reveal HER mechanism. Unfortunately, investigating is extremely challenging owing to interference caused by bulk complexity of environment. Here, behaviors different cationic electrolytes on Pd surfaces were investigated electrochemistry, situ core-shell nanostructure enhanced Raman spectroscopy theoretical simulation techniques. Direct spectral evidence reveals a red shift frequency decrease intensity as potential shifted positively direction. When comparing cation electrolyte systems at given potential, peak increases specified order: Li