期刊
JOURNAL OF CHEMICAL EDUCATION
卷 98, 期 9, 页码 3026-3031出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jchemed.1c00202
关键词
Upper-Division Undergraduate; Learning Theories; Hands-On Learning/Manipulatives; Laboratory Equipment/Apparatus; Electrochemistry; Oxidation/Reduction
资金
- Chongqing Higher Education Teaching Reform Research Project [203213]
- National Natural Science Foundation of China [21406021]
The new advanced electrochemical laboratory experiment is designed for undergraduates to master the preparation of oxygen reduction catalytic electrode, evaluate ORR catalyst properties, and understand the kinetics mechanism. Students will deeply understand the ORR mechanism and improve their data processing and comprehensive analysis skills through this comprehensive experiment.
Oxygen reduction reaction (ORR), as a multielectron electrode reaction, is an important electrochemical reaction in the field of electrochemical energy storage systems. Herein, a new advanced electrochemical laboratory experiment is designed for undergraduates to master the preparation of oxygen reduction catalytic electrode. Students can use rotating disk electrode (RDE) and rotating ring-disk electrode (RRDE) to evaluate the properties of the ORR catalyst and expound the kinetics mechanism of multielectron electrode reaction. By fitting the K-L curve to calculate the electron transfer number, the ORR reaction path of the industrial Pt/C catalyst in the KOH electrolyte can be determined. The basic kinetic parameters of the ORR and the intermediate content will help students to deeply understand the Butler-Volmer equation. The new teaching experiment focuses on the integration of frontier scientific research and undergraduate teaching. This experiment may enhance students' interest in learning electrochemistry and broadening their horizons as well as help them understand the ORR mechanism involved in modern electrochemical testing technology. In addition, the student's ability of data processing and comprehensive analysis will be improved. This new comprehensive experiment is a fundamental, innovative, and systematic physical chemistry experiment.
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