School of Environment and Energy, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou 510000, China.
Department of Mechanical Engineering Science, University of Johannesburg, Cnr Kingsway and University Roads, Auckland Park, Johannesburg 2092, South Africa.
Environ Sci Technol. 2021 Jun 15;55(12):8309-8317. doi: 10.1021/acs.est.1c01116. Epub 2021 May 24.
Lead-acid batteries are a reliable and cost-effective uninterrupted power supply for cars, wheelchairs, and others. Recycling the spent lead-acid batteries has increased cost and could be a serious pollution issue after extensive use. It is important to exploit new-generation application to increase their value. In this article, we used a simple method for recycling spent lead-acid batteries for a useful lead iodide resource with a high purity of over 99% and a recycling yield of 93.1% and then fabricated multifunctional FAPbI perovskite diodes using recycled lead iodide (PbI). The cost of recycled PbI based on lab-grade chemicals is estimated to be only 13.6% that of lab-grade PbI, which undoubtedly greatly reduces the preparation cost of devices in the lab. The external quantum efficiencies of our perovskite diodes prepared with commercial and recycled PbI are 19.0 and 18.7%, respectively, which shows that the performance of the device prepared from recycled PbI is comparable to that of commercial lab-grade PbI. Based on the expense of industrial-grade chemicals, the cost of recycled PbI is extrapolated to be 70.2% that of industrial-grade PbI. Therefore, it can not only offer an approach to recycle hazardous solid waste but also save manufacturing cost of new-generation photoelectric devices, leading to earning additional value for lead waste.
铅酸电池是汽车、轮椅和其他设备可靠且具有成本效益的不间断电源。回收用过的铅酸电池会增加成本，并且在广泛使用后可能会成为一个严重的污染问题。开发新一代应用以提高其价值非常重要。在本文中，我们使用了一种简单的方法来回收用过的铅酸电池，以获得高纯（超过 99%）和高回收收率（93.1%）的有用碘化铅资源，然后使用回收的碘化铅（PbI）制造多功能 FAPbI 钙钛矿二极管。基于实验室级化学品的回收 PbI 的成本估计仅为实验室级 PbI 的 13.6%，这无疑大大降低了实验室设备的制备成本。用商业和回收 PbI 制备的钙钛矿二极管的外量子效率分别为 19.0%和 18.7%，这表明从回收 PbI 制备的器件的性能与商业实验室级 PbI 的性能相当。基于工业级化学品的费用，回收 PbI 的成本被推断为工业级 PbI 的 70.2%。因此，它不仅为回收危险固体废物提供了一种方法，而且还节省了新一代光电设备的制造成本，为铅废料带来了额外的价值。
