Journal
ACS APPLIED ENERGY MATERIALS
Volume 3, Issue 5, Pages 4965-4973Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsaem.0c00510
Keywords
supercapacitor; additive manufacturing; 3D printing; printed electronics; in-space manufacturing
Funding
- In Space Manufacturing Program of the Space Technology Mission Directorate (STMD)
- Advanced Exploration Systems (AES) Office of the NASA Human Exploration and Operations Mission Directorate (HEOMD)
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Supercapacitors are attractive due to their high power density and durability relative to batteries. Printing technology has been rapidly emerging as manufacturing friendly, with a quick turn around and low-cost approach to produce a variety of devices. Herein, we show an end-to-end printing of supercapacitors including the substrate, current collector and active layers, and a gel polymer electrolyte, all simply printed. Two types of supercapacitors, electrochemical double-layer capacitor (EDLC) and pseudocapacitor (PC), were developed with activated carbon and graphene-Mn3O4 nanocomposite-based active layers, respectively. The all-printed supercapacitors show specific power and specific energy of 800.3 W/kg and 1.17 Wh/kg (at 0.5 A/g) for the EDLC and 1601 W/kg and 10.6 Wh/kg (at 1 A/g) for the PC. Extended durability tests reveal that the EDLC exhibits negligible performance deviation after 100 000 charge/discharge cycles while the PC shows less than 10% capacitance degradation after 25 000 cycles.
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