Hard x-ray photoelectron spectroscopy (HAXPES) of bulk nickel hydroxide Ni(OH)2 with Au overlayer

2026/03/04 by Izabela I. Rzeźnicka, Hideyuki Horino · 1 voice
Materials Science · Physics and Astronomy · #Electron and X-Ray Spectroscopy Techniques #X-ray Spectroscopy and Fluorescence Analysis #Supercapacitor Materials and Fabrication

paper · doi:10.1116/6.0004971

openalex publication_date 2026/03/04 · openalex created_date 2026/03/05 · openalex updated_date 2026/06/11

Abstract

Nickel hydroxide is a key material for batteries, supercapacitors, and electrocatalysis. In this study, hard x-ray photoelectron spectroscopy (HAXPES) using 5951 eV photons was employed to probe deep-core levels of commercial Ni(OH)2 powder with enhanced bulk sensitivity. The Ni 2p and Ni 2s HAXPES spectra are presented, showing characteristic multiplet and satellite features in the Ni 2p region and a significant chemical shift of the Ni 2s peak relative to reported values for metallic Ni.

Citations

• New interpretations of XPS spectra of nickel metal and oxides
• XPS study of NiO thin films obtained by chemical vapor deposition

Discussions

• Nickel hydroxide is key for batteries, supercapacitors, & electrocatalysis, & making links b/w crystal structure & bulk electronic properties is essential. HAXPES provides increased bulk sensitivity & [bsky, 0 points, 0 comments]