摘要
为了提升高年级本科生对晶体结构、电化学过程、热力学相平衡等核心知识的理解,本文设计了一项利用X射线衍射技术原位观测锂离子电池正极材料相变过程的教学实验。以钴酸锂和磷酸铁锂为研究对象,通过搭建原位测试体系,实时监测电化学过程中的结构演变,分析其相变路径及电压平台差异。实验结果显示,两种材料分别表现出单平台与多平台行为,揭示了其在不同自由度下的相变特征。实验融合了多学科理论及科研操作技能,强化了学生对理论知识的理解与科研素养的培养。该教学实验实现了科研技术向教学环节的有机转化,为高校探索“科研反哺教学”机制、培养高素质创新型人才提供了可推广的实践范式。
In order to enhance the understanding of senior undergraduates on the core knowledge of crystal structure,electrochemical processes,and thermodynamic phase equilibrium,a teaching experiment utilizing X-ray diffraction to observe the phase transition process of lithium battery cathode materials in situ was designed and implemented.Lithium cobaltate and lithium iron phosphate were taken as the research objects,and an in-situ test system was built to monitor the structural evolution of the electrochemical process in real time and to analyze the differences in the phase transition paths and voltage platforms.According to the results,the two materials exhibit single-platform and multi-platform behaviors respectively,revealing their phase transition characteristics under different degrees of freedom.With the integration of multidisciplinary theories and scientific research operation skills,it strengthens the comprehension of textbook knowledge and the cultivation of scientific research literacy of the students.With the organic transformation of research technology into teaching,such a teaching module provides a practical paradigm for universities to explore the mechanism of“research feeds back into teaching”and to cultivate high-quality and innovative talents.
作者
颜岩
董招君
孔德琛
YAN Yan;DONG Zhaojun;KONG Dechen(State Key Laboratory of Inorganic Synthesis and Preparative Chemistry,College of Chemistry,Jilin University,Changchun 130012,China;College of New Energy and Environment,Jilin University,Changchun 130012,China)
出处
《实验室研究与探索》
北大核心
2025年第12期166-171,177,共7页
Research and Exploration In Laboratory
基金
吉林省科技厅重点研发项目(20220203086SF)
吉林大学实验技术项目(SYXM2023B043)
吉林大学本科教学改革研究项目(2023XYB102)。
关键词
原位X射线衍射
锂离子电池
材料结构表征
科研反哺教学
in-situ X-ray diffraction(XRD)
lithium-ion batteries
material structure characterization
research feeds back into teaching
