高等学校化学学报2025，Vol.46Issue(8)：73-83,11.DOI:10.7503/cjcu20250095
氮掺杂多孔碳化钼纳米棒的制备及在酸碱条件下的析氢性能
Synthesis of Nitrogen-doped Porous Molybdenum Carbide Nanorods and Their Electrocatalytic Hydrogen Evolution Performance in Acidic and Alkaline Media
摘要
Abstract
Water electrolysis for hydrogen production has been recognized as an ideal pathway toward scalable green hydrogen manufacturing,owing to its renewable feedstock utilization,zero carbon emission byproducts,and high-purity hydrogen output.As the pivotal half-reaction in water splitting,the hydrogen evolution reaction(HER)suffers from sluggish kinetics that fundamentally limits energy conversion efficiency.Consequently,developing HER electrocatalysts with combined high activity and operational stability remains a critical challenge for practical imple-mentation.In this work,nitrogen-doped molybdenum carbide nanorods with hierarchical porous structures were synthesized by precisely regulating key synthesis parameters,including carbonization temperature and glucose content.Their phase composition,chemical state distribution,and morphological features were characterized via X-ray diffraction(XRD),X-ray photoelectron spectroscopy(XPS),nitrogen adsorption-desorption,Raman spectros-copy,scanning electron microscope(SEM),and transmission electron microscope(TEM).Electrochemical evalua-tions demonstrated that the optimized catalyst requires low overpotentials of merely 161 and 118 mV to achieve a cur-rent density of 10 mA/cm2 in 0.5 mol/L H2SO4 and 1 mol/L KOH,respectively.Remarkably,it exhibits exceptional operational stability,sustaining continuous HER operation for 200 h at 10 mA/cm2 in acidic media and 120 h under identical current density in alkaline condition.关键词
碳化钼/纳米棒/水裂解/析氢反应Key words
Molybdenum carbide/Nanorods/Water splitting/Hydrogen evolution reaction分类
化学化工引用本文复制引用
王乙童,曹圆圆,周丽娜,叶荣榕,李娣,刘芯辛,郭彪,周丽景,赵震..氮掺杂多孔碳化钼纳米棒的制备及在酸碱条件下的析氢性能[J].高等学校化学学报,2025,46(8):73-83,11.基金项目
国家自然科学基金(批准号:22102108,22202135)、辽宁省属本科高校基本科研业务费专项(批准号:LJ212410166075,LJ212410166025)和辽宁省教育厅科学研究经费(批准号:LQN202004)资助.Supported by the National Natural Science Foundation of China(Nos.22102108,22202135),the Fundamental Research Funds for Liaoning Universities,China(Nos.LJ212410166075,LJ212410166025)and the Youth Foundation of the Education Department of Liaoning Province,China(No.LQN202004). （批准号:22102108,22202135）
