物理化学学报2024，Vol.40Issue(4)：193-198,6.DOI:10.3866/PKU.WHXB202305026
金属有机框架衍生镍纳米颗粒在宽电位窗口内高效电催化二氧化碳还原
Metal-Organic Framework-Derived Nickel Nanoparticles for Efficient CO2 Electroreduction in Wide Potential Windows
摘要
Abstract
The electrocatalytic carbon dioxide(CO2)reduction has gained recognition as an outstanding approach for transforming CO2 into renewable energy products.To accomplish this reduction reaction,the development of efficient electrocatalysts is required.Nickel-based electrocatalysts have been extensively investigated for CO2 reduction;however,nickel nanoparticles(NiNPs)have demonstrated limited catalytic performance.In this study,NiNPs implanted in N-doped porous carbon(NiNPs-NC)were prepared by thermal treatment of nickel metal-organic framework,urea,and carbon black under an N2 atmosphere.The NiNPs-NC exhibited high catalytic performance for the electroreduction of CO2 to CO in both H-type and flow cells.In the H-type cell,the CO faradaic efficiencies(FEs)of NiNPs-NC exceeded 90%in the potential window from-0.67 to-1.07 V vs.reversible hydrogen electrode(RHE),reaching a maximum CO FE of approximately 100%at-0.87 V vs.RHE.In the flow cell,the CO selectivities of NiNPs-NC exceeded 95%in the potential window from-0.50 to-0.70 V vs.RHE.The fast charge transfer,as demonstrated by electrochemical impedance spectroscopy and Tafel slope,can be attributed to the high catalytic activity of NiNPs-NC.This study provides a simple method to develop highly efficient catalysts for electrocatalytic CO2 reduction.关键词
镍纳米颗粒/电催化剂/二氧化碳还原/金属有机框架/热处理Key words
Nickel nanoparticle/Electrocatalyst/CO2 reduction/Metal-organic framework/Thermal treatment分类
化学化工引用本文复制引用
邵碧珠,董慧君,龚云南,梅剑华,蔡锋石,刘金彪,钟地长,鲁统部..金属有机框架衍生镍纳米颗粒在宽电位窗口内高效电催化二氧化碳还原[J].物理化学学报,2024,40(4):193-198,6.基金项目
The project was supported by the National Key R&D Program of China(2022YFA1502902),National Natural Science Foundation of China(22271218,22071182,22001043,21931007),and Natural Science Foundation of Tianjin City(20JCYBJC00380).国家重点研发计划(2022YFA1502902),国家自然科学基金(22271218,22071182,22001043,21931007),天津市自然科学基金(20JCYBJC00380)资助项目 （2022YFA1502902）
