Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 14, Issue 10, Pages 12214-12222Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.1c23388
Keywords
fabric-based supercapacitor; all-in-one; seamless integration; multiwalled carbon nanotubes; screen printing
Funding
- Fundamental Research Funds for the Central Universities [2232021G-01]
- Natural Science Foundation of Shanghai [20ZR1400500, 22ZR1400800]
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All-in-one fabric-based supercapacitors (FSCs) are fabricated using screen-printing technique and multiwalled carbon nanotube (MWCNT) electrodes. These FSCs exhibit better capacitive behavior, rate capability, and flexibility, making them suitable for large-scale production and wearable electronic applications.
All-in-one supercapacitors are considered to be promising due to their advantages of flexibility and structure stability. However, the sophisticated and precise manufacturing processes and difficulty of series/parallel integration hinder their application and development. Herein, cost-effective all-in-one fabric-based supercapacitors (all-in-one FSCs) are fabricated by utilizing the facile screen-printing technique and multiwalled carbon nanotube (MWCNT) electrodes. The MWCNT electrodes are constructed on the gel-electrolyte-soaked fabric that simultaneously serves as separator and electrode substrates. The as-prepared all-in-one FSC exhibits better capacitive behavior and rate capability and lower internal resistance than traditional sandwiched fabric-based supercapacitors (sandwiched FSCs). Moreover, due to the simplified structure and interface interaction, the all-in-one FSC shows excellent flexibility and stability even under dynamic bending cycles with a relatively high strain rate of 20% s(-1).This work also demonstrates the seamless series/parallel integration scheme of all-in-one supercapacitors by designing the screen-printing patterns instead of using metal wires. The proposed fabrication process and series/parallel integration scheme definitely improve the portability of integrated supercapacitors and potentially contribute to the large-scale production and application on wearable electronics.
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