In Situ Reconstructing NiFe Oxalate Toward Overall Water Splitting.

ABSTRACT: Surface reconstruction plays an essential role in electrochemical catalysis. The structures, compositions, and functionalities of the real catalytic species and sites generated by reconstruction, however, are yet to be clearly understood, for the metastable or transit state of most reconstructed structures. Herein, a series of NiFe oxalates (Ni_xFe_{1- x}C₂O₄, x = 1, 0.9, 0.7, 0.6, 0.5, and 0) are synthesized for overall water splitting electrocatalysis. Whilst Ni_xFe_1-xC₂O₄ shows great hydrogen evolution reaction (HER) activity, the in situ reconstructed Ni_xFe_1-xOOH exhibits outstanding oxygen evolution reaction (OER) activity. As identified by the in situ Raman spectroscopy

SUBMITTER: Zhang Z 

PROVIDER: S-EPMC11600197 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature