广州化学2025，Vol.50Issue(2)：52-59,8.DOI:10.16560/j.cnki.gzhx.20250201
片层NiCo-LDH/CC电解水制氢耦合硫化物氧化产硫
Hierarchical NiCo-LDH/CC for Electrocatalytic Water-spltting into Hydrogen Coupled with Sulfur Production
摘要
Abstract
The NiCo-LDH/CC catalyst with a layered structure was synthesized in situ on a highly conductive carbon cloth substrate by a simply one-step hydrothermal method.Morphology and composition analysis were performed through SEM,XRD,and XPS characterization techniques.Electrochemical testing was conducted in an alkaline electrolyte solution containing sulfide ions.The results demonstrate that the open-circuit potential(SOR)of NiCo-LDH/CC is only-0.79 V vs.RHE,requiring only 0.37 V vs.RHE to achieve a high current density of 100 mA/cm2.Moreover,the reaction can be stably running for 72 hours without significant sulfur poisoning even in high concentration sulfide solutions.This catalyst exhibits high Faraday efficiency(＞90％)for hydrogen production while simultaneously oxidizing and degrading sulfides on the anode side to produce sulfur as a valuable byproduct.In addition,the Pt/C‖NiCo-LDH/CC HER-SOR system in a two-electrode configuration achieves remarkably low energy consumption for hydrogen production at just 1.25 kW·h/m3.关键词
电催化/氢氧化物/硫氧化反应/解耦/过渡金属Key words
electrocatalysis/hydroxide/sulfur oxidation reaction/decoupling/transition metal分类
化学引用本文复制引用
方政,宋云鹏,韦童..片层NiCo-LDH/CC电解水制氢耦合硫化物氧化产硫[J].广州化学,2025,50(2):52-59,8.基金项目
国家自然科学基金(No.22172143) （No.22172143）
