摘要
针对传统电解水制氢技术存在阳极析氧反应过电位高、动力学过程缓慢以及系统整体能耗大等问题,研究将苯甲醇氧化反应耦合至电解水制氢体系中,并通过引入钯纳米颗粒修饰四氧化三钴,提出了一种新型的复合纳米催化材料制氢系统。电化学性能测试结果表明,在1.0 A/cm^(2)电流密度下,该制氢系统仅需2.43 V的工作电压。此外,当工作电压提升至2.8 V时,该系统表现出了显著的催化活性,苯甲酸与氢气的产率分别达到了13.06 mmol/(cm^(2)·h)与0.68 mmol/(cm^(2)·h)。由此可知,研究系统不仅有效克服了传统电解水制氢的技术瓶颈,同时实现了有机小分子的高值化转化,能够为电解水制氢技术的能源优化与化学耦合提供新的思路与技术路径,具有广泛的应用前景与研究价值。
Aiming at the problems of high overpotential of anodic oxygen precipitation reaction,slow kinetic process and high overall energy consumption of the system in the traditional electrolytic water hydrogen production technology,the study coupled the benzyl alcohol oxidation reaction into the electrolytic water hydrogen production system,and proposed a novel composite nano-catalytic material for hydrogen production by introducing palladium nanoparticles to modify tetrakisobalt tetraoxide.The electrochemical performance test results show that the hydrogen production system only requires an operating voltage of 2.43 V at a current density of 1.0 A/cm^(2).In addition,when the operating voltage was increased to 2.8 V,the system showed remarkable catalytic activity,and the yields of benzoic acid and hydrogen reached 13.06 mmol/(cm^(2)·h)and 0.68 mmol/(cm^(2)·h),respectively,which indicated that the research system not only effectively overcame the technological bottleneck of the traditional electrolysis of water for hydrogen production,but also realised the high-value conversion of organic small molecules,which can be used for the production of hydrogen by electrolysis of water.The system not only effectively overcomes the technical bottleneck of traditional hydrogen production from electrolytic water,but also achieves the high-value conversion of organic small molecules,which can provide new ideas and technical paths for the optimisation of energy and chemical coupling of hydrogen production from electrolytic water,and has a wide range of prospects for application and research value.
作者
李智慧
Li Zhihui(Shanxi Branch,Hydrogen Source Jiachuang(Jiaxing)New Energy Operation Co.,Ltd.,Taiyuan Shanxi 030006,China)
出处
《山西化工》
2025年第11期147-149,共3页
Shanxi Chemical Industry
关键词
钯纳米颗粒
苯甲醇
催化
电解水
制氢
Pd nanoparticles
C6H5CH2OH
catalysis
water electrolysis
hydrogen production
