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Citation: Kuaibing Wang, Honglin Zhang, Wenjie Lu, Weihua Zhang. Experimental Design and Practice for Recycling and Nickel Content Detection from Waste Nickel-Metal Hydride Batteries[J]. University Chemistry, ;2024, 39(11): 335-341. doi: 10.12461/PKU.DXHX202403084 shu

Experimental Design and Practice for Recycling and Nickel Content Detection from Waste Nickel-Metal Hydride Batteries

Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China

Received Date: 23 March 2024
Revised Date: 4 July 2024

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.
- Waste battery,
- Electrochemistry,
- Spectrophotometry,
- Supercapacitor
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