Cellulosa-baserade kolfiberpapper för avancerad energilagring

Tidsperiod: 2020-01-01 till 2023-12-31

Projektledare: Zhaohui Wang

Finansiär: Vetenskapsrådet

Bidragstyp: Bidrag för anställning eller stipendier

Budget: 3 100 000 SEK

Owing to its lightweight, fibrous structure, high electrical conductivity and mechanical integrity, carbon fiber paper has been widely used as multifunctional substrate and has led to state-of-the-art performance in aerospace, sports, and particularly in energy storage. However, it suffers from high fiber cost, time-energy-consuming carbonization process, low-speed fabrication technique, and new challenges in energy storage applications regarding limited electrochemical/mechanical stability resulting from the mechanical instability against prolonged mechanical deformations and the electrochemical reaction triggered degradation.This project will perform the very first fundamental research to develop cellulose-based carbon fiber paper consisting of cellulose core and carbon sheath, which taking advantages of the sustainability, fibrous structure, ease of fabrication (e.g. paper) and mechanical flexibility of the most natural abundant biopolymer-cellulose, and the conductivity of carbon. Such cellulose-based carbon fiber paper can serve as tailor-made, low-cost, unconventional flexible conductive substrate to replace/reduce the usage of metal foil and carbon paper which suffer from heave, expensive, bulky, limited electrochemical stability, and mechanical failures under repeated bending, folding or twisting, hence could be easily adopted to advance energy storage devices with unprecedented advantages regarding sustainability, lightweight, durability, mechanical flexibility.