手持技术数字化实验探究夹心式膜电池的创新改进*

借助手持技术,用阳离子交换膜代替盐桥,滤纸代替烧杯,将双液铜锌原电池改进为高效化、微型化的夹心式阳离子交换膜原电池。通过实验探究、微观分析得出阳膜电池具有电流示数大且较稳定、装置简易、操作方便、药品用量小、绿色无污染等优点。本实验不仅揭示膜电池的工作原理、还原高考膜电池实验、构建化学电源的基本模型,还贴近生活,提高学生的自主实验探究能力,培养学生宏观辨识与微观探析、科学探究与创新意识的核心素养。

Improvements of Sandwich Membrane Battery Based on Hand-Held Technology Digital Experiment

Based on hand-held technology, replacing the salt bridge with cation-exchange membrane, as well as replacing beaker with filter paper, this paper improved the double-liquid copper-zinc primary battery to a novel sandwich copper-zinc primary battery. Experimental inquiry and micro-analysis indicated that the improved battery was highly efficient and miniature, with advantages of durable currents, simple devices, easy operation, smaller amount of drug usage and no pollution et al. Overall, this study uncovered working mechanism of membrane battery and reoccurred membrane battery experiments in National College Entrance Examinations, as well as constructed a basic chemical battery model. Furthermore, this study was very close to our lives and solved practical problems, which also improved students’ abilities and core literacies on independent experimental exploration, macroscopic identification and microscopic analysis, and scientific inquiry and innovation consciousness.