Greco Giuseppe, Moncada Alessandra, Sunseri Carmelo, Inguanta Rosalinda
Laboratorio di Chimica Fisica Applicata, Dipartimento dell'Innovazione Industriale e Digitale Ingegneria Chimica Gestionale Informatica Meccanica, Università di Palermo, Viale delle Scienze - 90128 Palermo (Italy).
J Nanosci Nanotechnol. 2019 Nov 1;19(11):7398-7403. doi: 10.1166/jnn.2019.16603.
Currently, lead acid battery is extensively investigated owing to its prevalent use as a startinglighting and ignition device. An essential role for electrochemical reactions is played by the surface area available for conversion reactions and a possible approach is the use of nanostructured electrodes. In this work, lead dioxide nanostructured electrodes were tested in order to investigate the dependence of the charge and discharge behaviour on some parameters such as electrolyte concentration, and a new type of thin separator. In this last case, it is possible to reduce the size of the cell by using a very thin separator comparable to the nanostructured electrode thickness. Besides, a low concentration of electrolyte was also tested for studying its influence on the performance of a nanostructured electrode. Lead dioxide electrodes were cycled at 1C-rate and discharged to a cutoff voltage of 1.2 V up to 90% of the gravimetric capacity. Electrodes were assembled in a zero gap configuration using a commercial negative plate as counter-electrode with a large excess of active mass in comparison to the nanostructured one. Tests were conducted in very stressful conditions, in order to compare the behaviour of this new type of battery with that of the commercial one.
目前，铅酸电池因其作为启动照明和点火装置的广泛应用而受到广泛研究。可用于转化反应的表面积对电化学反应起着至关重要的作用，一种可能的方法是使用纳米结构电极。在这项工作中，对二氧化铅纳米结构电极进行了测试，以研究充电和放电行为对一些参数（如电解质浓度）以及一种新型薄隔板的依赖性。在后一种情况下，通过使用与纳米结构电极厚度相当的非常薄的隔板，可以减小电池的尺寸。此外，还测试了低浓度电解质对纳米结构电极性能的影响。二氧化铅电极以1C倍率循环，放电至截止电压1.2V，直至达到重量容量的90%。电极采用零间隙配置组装，使用商用负极板作为对电极，与纳米结构电极相比，其活性物质过量很多。测试在非常严苛的条件下进行，以便将这种新型电池的性能与商用电池的性能进行比较。
