摘要
本新创实验设计旨在开发一种基于废旧电池回收再利用环保理念,融合无机化学、电化学与分析化学的实验体系,将镍氢电池回收、二次储能应用以及镍离子分析检测合为一体,加深学生对基础化学实验原理的认识,拓展创新思维。在二次储能方面,选用镍氢电池回收液中的含钴氢氧化镍和商业活性炭分别作为正负极材料,通过组装纽扣电池验证器件的储能能力。利用计时电位与循环伏安法,评估纽扣电池在不同电流密度和不同扫速下的性能表现。同时,串联多组纽扣电池用于点亮小灯泡来验证其实用价值。在镍离子检测方面,利用分光光度法定量检测镍离子含量。通过实验的联合设计与分析,学生可以认识到新能源技术的潜在应用前景,并充分了解储能器件回收与检测分析,培养其创新和环保意识。
This new experimental design aims to develop an environmental protection concept based on the recycling of waste batteries,integrating inorganic chemistry,electrochemistry and analytical chemistry experiment system.It merges nickel-metal hydride battery recycling,secondary energy storage application with nickel ion analysis and detection,deepening students' understanding of basic chemistry experiment principles and expanding innovative thinking.In terms of secondary energy storage,cobalt-containing nickel hydroxide from nickel-metal hydride battery recycling solution and commercial activated carbon were selected as positive and negative electrode materials,respectively.The energy storage capacity of the device was verified by assembling the button cell.Chronopotentiometry and cyclic voltammetry were used to evaluate the performance of the button device at different current densities and different sweep rates.Meanwhile,multiple sets of button cells in series are used to light small bulbs to verify their practical application.In the aspect of nickel ion detection,spectrophotometry is used to quantitatively detect nickel ion content.Through the joint design and analysis of experiments,students can realize the potential application prospects of new energy technologies and fully understand the recycling of energy-storage devices and detection analyses,and thus cultivate innovation and environmental awareness.
作者
汪快兵
张红林
卢文杰
章维华
Kuaibing Wang;Honglin Zhang;Wenjie Lu;Weihua Zhang(Department of Chemistry,College of Sciences,Nanjing Agricultural University,Nanjing 210095,China.)
出处
《大学化学》
CAS
2024年第11期335-341,共7页
University Chemistry
基金
国家自然科学基金面上项目(22279061)
南京农业大学应用化学“国家一流”专业建设项目(2022YHJG002)
南京农业大学实验教学和教学实验室建设研究项目(SYJX202407)。
关键词
废旧电池
电化学
分光光度法
超级电容器
Waste battery
Electrochemistry
Spectrophotometry
Supercapacitor
