Journal
ENERGY TECHNOLOGY
Volume 6, Issue 7, Pages 1380-1391Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ente.201700826
Keywords
electrodeposition; flexible electronics; manganese oxide; nanostructures; supercapacitors
Categories
Funding
- National Research Foundation of Korea (NRF) grant - Korean Government (MSIP) [2015R1A4A1041746]
Ask authors/readers for more resources
A miniaturized and flexible asymmetric micro-supercapacitor (ASC) based on surface-modified MnO2 @Au and thin nanosheets of NiCo2O2@Au (termed 2D-qMnO(2)//NiCo2O4 microsupercapacitor) is reported. A lightweight and superior flexible micro-supercapacitor is successfully achieved using conventional microfabrication techniques. The proposed electrodeposition method is very effective for the surface modification and, as a result, uniform and high-quality 2D-quasi MnO2 and NiCo2O4 thin-film formation on a collector current is achieved. The fabricated 2D-qMnO(2)//NiCo2O4 @Au and polymeric gel electrolyte-based micro-supercapacitor has advantageous features. with a high areal capacitance of 5.36 mFcm(2). The 2D-qMnO(2)//NiCo2O4 MSC delivers a high energy density of 0.42 mWhern(-2) at 48.90 mW cm(-2) power density with superior cycling stability (89.62%) over initial 5000 cycles. Impedance analysis showed that the 2D-qMnO(2)//NiCo2O4 MSC device has a phase angle of 73 with an extremely small relaxation time constant of 14 ms. Finally, excellent device performance of the 2D-qMnO(2)//NiCo2O4 MSC under different bending and twisting is demonstrated to evaluate its mechanical flexibility.
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