电化学2023，Vol.29Issue(5)：32-41,10.DOI:10.13208/j.electrochem.2206231
低共熔溶剂辅助合成新型的网状纳米结构用于加速甲酸电氧化
Deep Euteceic Solvents-assisted Synthesis of Novel Network Nanostructures for Accelerating Formic Acid Electrooxidation
摘要
Abstract
Deep eutectic solvents(DESs)have been reported as a type of solvent for the controllable synthesis of metal nanostructures.Interestingly,flower-like palladium(Pd)nanoparticles composed of staggered nanosheets and nanospheres are spontaneously transformed into three-dimensional(3D)network nanostructures in choline chloride-urea DESs using ascorbic acid as a reducing agent.Systematic studies have been carried out to explore the formation mechanism,in which DESs itself acts as a solvent and soft template for the formation of 3D flower-like network nanostructures(FNNs).The amounts of hexadecyl trimethyl ammonium bromide and sodium hydroxide also play a crucial role in the anisotropic growth and generation of Pd-FNNs.The low electrocatalytic performance of Pd is one of the major challenges hindering the commercial application of fuel cells.Whereas,the 3D Pd-FNNs with lower surface energy and abundant grain boundaries exhibited the enhanced electrocatalytic activity and stability toward formic acid oxidation,by which the mass activity and specific activity were 2.7 and 1.4 times higher than those of commercial Pd black catalyst,respectively.Therefore,the current strategy provides a feasible route for the synthesis of unique Pd-based nanostructures.关键词
低共熔溶剂/钯/网络纳米结构/甲酸/电氧化Key words
Deep eutectic solvents/Palladium/Network nanostructure/Formic acid/Electro-oxidation引用本文复制引用
张俊明,张小杰,陈瑶,房英健,樊友军,贾建峰..低共熔溶剂辅助合成新型的网状纳米结构用于加速甲酸电氧化[J].电化学,2023,29(5):32-41,10.基金项目
The project was supported by the National Nat-ural Science Foundation of China(22162006),the China Postdoctoral Science Foundation(2021M 691366)and the Natural Science Foundation of Shanxi Province(20210302124473). （22162006）
