Abstract Aiming at the shortcomings of electrochemical corrosion concept teaching, based on the TQVC concept cognitive model of handheld technology digital experiment, a handheld technology digital experiment is designed to promote students' cognition of electrochemical corrosion concept. Using temperature sensor, redox sensor and pH sensor, the temperature curve, redox potential curve and pH curve of aqueous magnesium self heating package working in solution are measured. The working principle of corrosive galvanic cell, corrosion heat generation principle, the role of slow-release homogenizer and embedding agent and the heating effect of various types of lunch boxes are analyzed by means of multiple characterization. The purpose of this study is to help students understand the essence of electrochemical corrosion from the two-dimensional perspective of device and principle, in order to provide reference for daily teaching.
WEN Jin-Ju, QIAN Yang-Yi, ZHANG Jia-Yu, TAN Yu-Ling. Explore the Principle of Electrochemical Corrosion Heating of Self-Heating Package by Handheld Technology Digital Experiment[J]. Chinese Journal of Chemical Education, 2023, 44(9): 112-119.
