水系锌离子电池MnO_(2)正极材料的合成及其电化学性能研究综合教学实验设计  

Synthesis and electrochemical performance comprehensive teaching experimental design of MnO_(2) cathode material for aqueous zinc-ion batteries

作　　者：伊廷锋 张楠 朱彦荣 王鹏飞 柳宗琳 YI Tingfeng;ZHANG Nan;ZHU Yanrong;WANG Pengfei;LIU Zonglin(School of Resources and Materials,Northeastern University at Qinhuangdao,Qinhuangdao 066004,China)

机构地区：[1]东北大学秦皇岛分校资源与材料学院,河北秦皇岛066004

出　　处：《实验技术与管理》2024年第12期162-169,共8页Experimental Technology and Management

基　　金：2023—2024年度河北省高等教育教学改革研究与实践项目(2023GJJG443);2022年河北省研究生课程思政示范课程、教学名师立项建设项目(YKCSZ2022140);国家自然科学基金项目(52374301)。

摘　　要：设计了水系锌离子电池δ-MnO_(2)正极材料的合成及其电化学性能综合教学实验。采用共沉淀法制备了水钠锰矿型δ-MnO_(2)材料,借助XRD、SEM和HRTEM等现代检测分析方法培养学生的科学实验技能和实践创新能力,利用电化学性能表征培养学生利用理论知识解决实际问题的能力。结合水系锌离子电池水钠锰矿型δ-MnO_(2)正极材料形貌设计这一科技前沿进展,设计的这一综合性、创新性和可操作性电化学综合实验,能够使学生在开阔视野的同时培养创新思维能力和解决问题能力,有利于达成高素质应用型人才培养目标。[Objective]To broaden the horizon of college students and help develop their innovative thinking and problem-solving abilities,a comprehensive teaching experiment ofδ-MnO_(2) cathode material for aqueous zinc-ion batteries(AZIBs)was designed.These batteries have increasingly gained attention in the field of large-scale energy storage due to their low cost,high safety standards,and environmental friendliness.The cathode of AZIBs typically provides the active sites for zinc storage,crucially influencing the battery potential and capacity.In this regard,there is a great need to explore modified or novel cathode materials with high capacity and long cycle lifetime.Manganese dioxide(MnO_(2))has attracted much attention due to its high operating voltage and low manufacturing cost;however,the inherent poor conductivity and structural collapse during charging and discharging of MnO_(2) cathode led to its low specific capacity and poor cycling stability,which seriously constrain the development of AZIBs.By investigating the related literature,morphological modulation is expected to improve the electrochemical performance and long-term cycling stability of MnO_(2) cathode materials.[Methods]In this study,existing scientific research equipment was used to design a series of comprehensive tests for battery cathode materials,including the preparation and characterization of materials,the setting of electrochemical tester parameters,and the screening of data.To cultivate students'ability in independent thinking,communication and collaboration,analysis,and problem-solving skills,the experimental data analysis is combined into the process of teaching experiments,such as students observing the morphology of the samples through SEM,analyzing the information of the crystal structure by XRD,testing the electrochemical data by the electrochemical workstation,collaborating with classmates to discuss the analysis and processing of the data,as well as learning the principle of testing instruments and completing the experimental tests i

关 键 词：水系锌离子电池 δ-MnO_(2) 物理化学 综合实验 

分 类 号：O6-3[理学—化学] TM912[电气工程—电力电子与电力传动]