Interfacial insights into the polarization protocol - towards reducing corrosion and improving the cycle life of electrochemical capacitors
[ 1 ] Instytut Chemii i Elektrochemii Technicznej, Wydział Technologii Chemicznej, Politechnika Poznańska | [ P ] pracownik
2024
artykuł naukowy
angielski
- corrosion
- current collectors
- energy storage devices
- stainless steel
- supercapacitors
EN The number of scientific publications on the impact of corrosion on current collectors on the working parameters of electrochemical capacitors is very limited. The aim of current research is to search for new, environmentally friendly chemical power sources and energy storage devices and to improve existing ones. Therefore, this article presents a simple and effective way to improve the life of a symmetric electrochemical capacitor by changing the direction of electrode polarization, which in turn inhibits the corrosion of the current collector. This slows the degradation of current collectors of positive electrode over long durations. However, activated carbon electrode corrosion also occurs. Experiments on capacitors with stainless steel and gold current collectors indicate that the lifespan of the latter is much longer than that of the former. Therefore, current collector corrosion has a distinct and detrimental impact on electrochemical capacitor operation. Moreover, the research results indicate that carbon corrosion results from current collector corrosive damage.
27242 - 27253
CC BY (uznanie autorstwa)
czasopismo hybrydowe
ostateczna wersja opublikowana
w momencie opublikowania
publiczny
200
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