rGO–CMC fiber supercapacitors with core-sheath structure manufactured by coaxial extrusion printing

نویسندگان

چکیده

Fiber-shaped supercapacitors are attractive as an energy storage unit due to their excellent flexibility. However, fabricating robust fibers with large yields remains a challenge. In this work, we prepare flexible core-sheath via coaxial extrusion printing. Carboxymethylcellulose sodium salt (CMC) slurry controlled rheological properties is extruded from the outer channel, while graphene oxide (GO) inner channel simultaneously. The followed freeze-drying process protects GO sheets agglomeration, providing more efficient chemical reduction. reduced (rGO) separated and expanded fill in CMC sheath, which eliminates delamination between sheath rGO core. We study influences of on fiber microstructures, explore design, quality, reduction condition, electrochemical performance. fabrication method allows scalable manufacturing electrodes fiber-shaped conductive networks.

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ژورنال

عنوان ژورنال: Journal of Materials Research

سال: 2021

ISSN: ['0884-1616', '1092-8928', '0884-2914', '1091-8876', '2044-5326']

DOI: https://doi.org/10.1557/s43578-021-00357-5