Promotion effect of intercalated citrate anion on the reconstruction of NiFe LDH for oxygen evolution reaction

Abstract

The promotion effect of citrate anions (CA) on OER activity is considered. CA intercalation could accelerate the structure reconstruction to re-form the catalytically active Ni(Fe)OOH.

Electrodeposited CoNi-LDH nanosheets supported on halloysite nanotubes as a robust and highly efficient electrocatalyst for water oxidation

“…10,11 As a result, extensive research has been focused on the design and development of electrocatalysts with low cost that exhibit competitive or even superior OER performance. Inexpensive transition-metal oxides, 12 carbides, 13 chalcogenides, 14–16 phosphides, 17,18 oxyhydroxides, 12 nitrides, 13 borides, 19 metal–organic frameworks 20–24 and other materials have shown promise as alternatives to electrocatalysts for the OER based on noble metals. This is due to their abundance, cost-effectiveness, capability to exhibit a range of oxidation states, and proficient catalytic activity.…”

“…37 LDHs exhibit distinctive characteristics, including remarkable chemical stability, a significant surface-to-volume ratio, readily accessible active sites, and the ability to adjust their chemical constitution. Consequently, LDHs have been utilized in diverse research areas, including photocatalysis, 38 electrocatalysis, 23,39,40 adsorption, 41 electrochemical energy conversion and storage, 42 and drug delivery. 43…”