基于创新人才培养机制的研究生应用电化学课程创新实验设计

Innovative Experimental Design of Applied Electrochemistry Course for Graduate Students Based on Innovative Talent Training Plan

本文以创新型人才培养为目标,结合研究生《应用电化学》课程的特点,对研究生《应用电化学》课程进行教学改革,提出科研支撑教学的课程授课模式,引入创新型应用电化学实验模块,设计了一个CoFe LDH/MOF/CC复合材料的合成及电催化分解水产氧的应用电化学实验,该实验涉及电催化剂的合成、表征及电催化性能测试等方面。通过该创新型实验以提升研究生教学质量,实现理论联系实际,培养具有创新精神和实践能力的高素质应用型人才。以典型的水分解电催化剂CoFe LDH/MOF/CC为例,由二维LDHs纳米片部分转化二维MOFs构筑LDHs/MOFs异质结构,在碳布基底上合成了CoFe LDH/MOF/CC纳米复合材料。利用X-射线粉末衍射(XRD)、X-射线光电子能谱(XPS)、扫描电镜(SEM)等手段对其进行表征。制备的CoFe LDH/MOF/CC电催化剂表现出了良好的OER性能,在电流密度为10 mA·cm^(-2)时,过电位为240 mV,Tafel斜率为83.74mV·dec^(-1),经过24 h的稳定性测试后,过电位仅增加了0.02V,是具有发展前景的电解水析氧反应电催化剂。

With the aim of cultivating innovative talents and combining the characteristics of the applied electrochemistry course for graduate students,this article carries out teaching reform on the applied electrochemistry course for graduate students.A teaching mode supported by scientific research is proposed,and an innovative applied electrochemical experimental module is introduced to design an applied electrochemical experiment on the synthesis of CoFe LDH/MOF/CC composite materials and the electrocatalytic water decomposition for oxygen production.The experiment involves the synthesis of electrocatalysts,the characterizations and electrocatalytic performance testing.Through this innovative experiment,we aim to improve the quality of graduate teaching,integrate theory with practice,and cultivate high-quality applied talents with innovative spirit and practical abilities.Taking a typical water decomposition electrocatalyst CoFe LDH/MOF/CC as an example,the LDHs/MOFs heterostructure was constructed by partially converting two-dimensional LDHs nanosheets into two-dimensional MOFs,and CoFe LDH/MOF/CC nanocomposites were synthesized on a carbon cloth substrate.It was characterized by X-ray powder diffraction(XRD),X-ray photoelectron spectroscopy(XPS),scanning electron microscopy(SEM),and other means.The prepared CoFe LDH/MOF/CC electrocatalyst exhibited good OER performance.At a current density of 10 mA·cm^(-2),the overpotential was 240 mV,and the Tafel slope was 83.74 mV·dec^(-1).After 24 hours of stability testing,the overpotential only increased by 0.02 V,making it a promising electrocatalyst for electrolytic water oxygen evolution reactions.