Piscoiu Delia N, Rada Simona, Macavei Sergiu, Barbu Lucian, Suciu Ramona, Culea Eugen
Faculty of Materials and Environmental Engineering, Technical University of Cluj-Napoca, 400641 Cluj-Napoca, Romania.
National Institute for Research and Development of Isotopic and Molecular Technologies, 400293 Cluj-Napoca, Romania.
Materials (Basel). 2025 Feb 21;18(5):935. doi: 10.3390/ma18050935.
The recycling of spent automotive batteries is essential for minimizing their environmental impact. This requires eco-innovative methods with low cost and energy use. The present study explores the recycling of battery electrodes through the melt quenching method, a process that incorporates spent anode and cathode plates into a vitreous host matrix. Samples with the xCuO·10SbO·(90 - x)[4PbO·Pb] composition, where x = 0 to 30 mol% CuO, were prepared by the melt quenching method. The XRD analysis indicates the vitroceramic structures of the obtained samples. Thus, the presence of varied crystalline phases such as Pb(SO)O, PbSO, and metallic Pb was detected. The SEM micrographs highlighted heterogeneous regions within the samples and showed a decreases of the size of crystallites with increased dopant concentrations. IR and UV-Vis spectra suggest that the copper ions act as network modifiers, creating bond defects and free oxygen ions, and yielding a reduction of the optical bandgap energy at higher dopant contents. EPR data show that the shape of the resonance lines and the coordination geometry of the Cu ions are influenced by the dopant concentrations. The analysis of the voltammetric data indicates that doping the recycled material with 20 mol% CuO and 10 mol% SbO eliminates the process of hydrogen evolution and reduces the anodic electrode passivation.
废旧汽车电池的回收利用对于将其对环境的影响降至最低至关重要。这需要采用低成本、低能耗的生态创新方法。本研究通过熔体淬火法探索电池电极的回收利用，该过程将废旧阳极板和阴极板纳入玻璃态主体基质中。采用熔体淬火法制备了xCuO·10SbO·(90 - x)[4PbO·Pb]组成的样品，其中x = 0至30 mol% CuO。XRD分析表明所获得样品的微晶玻璃结构。因此，检测到了诸如Pb(SO)O、PbSO和金属Pb等不同晶相的存在。SEM显微照片突出了样品中的异质区域，并显示随着掺杂剂浓度的增加，微晶尺寸减小。红外光谱和紫外可见光谱表明，铜离子作为网络改性剂，产生键缺陷和自由氧离子，并在较高掺杂剂含量下使光学带隙能量降低。电子顺磁共振数据表明，共振线的形状和铜离子的配位几何结构受掺杂剂浓度的影响。伏安数据分析表明，用20 mol% CuO和10 mol% SbO掺杂回收材料可消除析氢过程并减少阳极电极钝化。
