Phys.org November 9, 2021
Polyaniline (PANI) is conductive and can be used as the electrode in a supercapacitor device, storing charge by trapping ions. To maximize energy storage, an international team of researchers (UK, Brazil) developed a novel method of depositing a thin layer of PANI onto a forest of conductive carbon nanotubes. This composite material makes an excellent supercapacitive electrode. However, as the composite is made up of different materials, it is difficult to separate and fully understand the complex processes which occur during charging and discharging. The researchers used Distribution of Relaxation Times analysis technique to examine complex electrode processes to separate and identify them, making it possible to optimize fabrication methods to maximize useful reactions and reduce reactions that damage the electrode. The technique can also be applied when using different materials in supercapacitor and pseudocapacitor development. According to the researchers their work will make energy harvesting and high-power delivery more effective…read more. TECHNICAL ARTICLE