School of Physics, University of Electronic Science and Technology of China, Chengdu, 611731, China.
School of Physics, University of Electronic Science and Technology of China, Chengdu, 611731, China.
J Environ Manage. 2021 Nov 15;298:113473. doi: 10.1016/j.jenvman.2021.113473. Epub 2021 Aug 3.
For the first time, spent Zn-MnO primary batteries are recycled to directly build rechargeable Zn-MnO batteries with a mixed solution of sulfuric acid and hydrogen peroxide as the leachate, which aimed to the efficient recovery of spent Zn-MnO primary batteries and the realization of high-powered rechargeable Zn-MnO batteries. After simple purification, the leached liquid is directly used as the working solution to prepare an electrolytic rechargeable Zn-MnO battery. The experimental results show that the performance of the recycling solution of the neutral Zn-MnO primary battery was better than that of the alkaline Zn-MnO primary battery, and both performed better than the solution prepared with chemically pure reagents. After optimizing the pH of the working solution and charging current, the obtained rechargeable Zn-MnO battery can provide an energy efficiency of 72.33 % ± 0.55, a coulombic efficiency of 90.17 % ± 0.71, and excellent cycle stability. These experimental results show that spent Zn-MnO primary batteries can be successfully recycled to prepare rechargeable Zn-MnO batteries, demonstrating very good application potential.
首次尝试以硫酸和过氧化氢的混合溶液作为浸取剂，从废旧锌-二氧化锰一次电池中回收并直接构建可充电锌-二氧化锰电池，旨在高效回收废旧锌-二氧化锰一次电池并实现高功率可充电锌-二氧化锰电池。浸取液经过简单的净化后，可直接用作工作溶液来制备用于电解的可充电锌-二氧化锰电池。实验结果表明，中性锌-二氧化锰一次电池的回收液性能优于碱性锌-二氧化锰一次电池，且均优于使用化学纯试剂制备的溶液。通过优化工作溶液的 pH 值和充电电流，得到的可充电锌-二氧化锰电池可提供 72.33%±0.55 的能量效率、90.17%±0.71 的库仑效率和出色的循环稳定性。这些实验结果表明，废旧锌-二氧化锰一次电池可以成功回收，用于制备可充电锌-二氧化锰电池，展示出非常好的应用潜力。
