Nanowerk June 21, 2023
Researchers in South Korea used to prepare floating catalyst–chemical vapor deposition-derived CNT sheets for potential use as all-around current collectors in two representative energy storage devices: batteries and electrochemical capacitors. CNT-based current collectors enhance ion transport kinetics and provide many ion adsorption and desorption sites, which are crucial for improving the performance of batteries and electrochemical capacitors. They demonstrated high-performance lithium-ion hybrid capacitors (LIHCs) by assembling activated carbon–CNT cathodes and prelithiated graphite–CNT anodes. CNT-based LIHCs exhibit 170% larger volumetric capacities, 24% faster rate capabilities, and 21% enhanced cycling stabilities relative to LIHCs based on conventional metallic current collectors. According to the researchers CNT-based current collectors are the most promising candidates for replacing currently used metallic materials and provide a valuable opportunity to possibly redefine the roles of current collectors… read more. TECHNICAL ARTICLEÂ
Graphical abstract. Credit: ACS Appl. Mater. Interfaces 2023, 15, 21, 25484–25494, May 18, 2023Â