应力应变下Co_(3)O_(4)薄膜的电催化性能研究——研究型电化学实验设计  

Study on Electrocatalytic Properties of Co_(3)O_(4)Thin Films Under Stress and Strain:Experimental Design of Research-Based Electrochemistry

作　　者：吴静静[1] Wu Jingjing(Guilin University of Technology,Guilin 541004,China)

机构地区：[1]桂林理工大学,广西桂林541004

出　　处：《广东化工》2025年第3期178-180,146,共4页Guangdong Chemical Industry

摘　　要：本研究旨在探索应力应变条件对Co_(3)O_(4)薄膜电催化性能的影响,并据此设计了一套研究型电化学实验。首先,采用溶胶-凝胶技术在Ti片上制备Co_(3)O_(4)薄膜,并通过X射线衍射(XRD)和扫描电镜(SEM),对其晶体结构和表面形貌进行了表征。随后,通过精确控制的机械拉伸装置对Co_(3)O_(4)薄膜施加不同的应力应变,同时利用循环伏安法(CV)和线性扫描伏安法(LSV)测试其电催化活性。实验结果表明,适度的应力应变现象可显著提高Co_(3)O_(4)薄膜的析氧反应(OER)性能。本实验设计使学生能够结合实验,掌握Co_(3)O_(4)薄膜制备工艺、电池系统的组装流程,并通过电化学测试手段观察到应力应变作用下的CoOx/Ti的OER性能变化,从而加深对电催化原理的掌握。本研究不仅增强了学生对电催化材料性能调控的认识,还使学生更加直观地了解电化学的前沿热点及先进的研究方法,激发学生的科学研究兴趣,培养学生的实践能力,对培养创新型工程科技人才具有重要意义。The study aims to investigate the impact of stress-strain conditions on the electrocatalytic performance of Co_(3)O_(4)films and,accordingly,designs a set of research-oriented electrochemical experiments.Initially,Co_(3)O_(4)films were fabricated on Ti substrates using a sol-gel technique,and their crystal structure and surface morphology were characterized through X-ray diffraction(XRD)and scanning electron microscopy(SEM).Subsequently,precise mechanical stretching devices were employed to apply different stress-strain levels to the Co_(3)O_(4)films,while their electrocatalytic activity was evaluated using cyclic voltammetry(CV)and linear sweep voltammetry(LSV).The experimental results reveal that moderate stress-strain can significantly enhance the oxygen evolution reaction(OER)performance of Co_(3)O_(4)films.The experimental design enables students to grasp the Co_(3)O_(4)film preparation process and battery system assembly procedures through hands-on experiments.Furthermore,they can observe the changes in OER performance of CoOx/Ti under stress-strain conditions using electrochemical testing techniques,thus deepening their understanding of electrocatalytic principles.The study not only deepens students'understanding of the performance regulation of electrocatalytic materials,but also provides them with a more intuitive grasp of the cutting-edge hotspots and advanced research methodologies in electrochemistry.It stimulates their interest in scientific research,cultivates their practical abilities,and holds significant importance in nurturing innovative engineering and technological talents.

关 键 词：实验教学 电化学 OER性能 Co_(3)O_(4)薄膜 应力应变 

分 类 号：TQ[化学工程]