Journal
DIAMOND AND RELATED MATERIALS
Volume 140, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.diamond.2023.110555
Keywords
Cellulose nanofibers; Bidirectional freezing; Carbon aerogel; Supercapacitor electrodes; Strain sensors
Ask authors/readers for more resources
In this study, a cellulose nanofibers/reduced graphene oxide carbon aerogel (BCRCA) with a unique layered structure was successfully prepared using bidirectional freezing technique and thermal annealing. BCRCA exhibits ultra-low density, high specific surface area, and good compression properties, making it suitable for supercapacitor electrodes and wearable strain sensors.
Carbon aerogel is an excellent conductive porous carbon material, but suffers from poor mechanical properties and fatigue resistance, which greatly limits its application as a flexible electronic device. Herein, the cellulose nanofibers/reduced graphene oxide carbon aerogel (BCRCA) with a unique layered structure was prepared by bidirectional freezing technique and thermal annealing. BCRCA's layered structure gives it ultra-low density (3.25 mg/cm3), high specific surface area (159.53 m2/g) and good compression properties (91.3 % stress retention, 100 cycles at 50 % compression). In addition, BCRCA for supercapacitor electrodes has a high specific capacity of 104.3 F g-1 at 0.1 A g-1 and a high capacitance retention rate of 93 % at 5000 cycles at 2 A g-1. Notably, the BCRCA assembled into a wearable strain sensor exhibits a stable current signal for real-time monitoring of finger, wrist, and elbow joint movements. These advantages make BCRCA have broad applica-tion prospects in the field of electronic energy storage devices and wearable strain sensors.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available