Li Salt Assisted Highly Flexible Carbonaceous Ni<sub>3</sub>N@polyimide Electrode for an Efficient Asymmetric Supercapacitor.
basic_science · Level V
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- Record sourced from PubMed, PMID 38157323.
- Also identified by DOI 10.1021/acs.nanolett.3c04128.
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Abstract
This work used a highly flexible, sustainable polyimide tape as a substrate to deposit ductile-natured carbonaceous Ni<sub>3</sub>N (C/Ni<sub>3</sub>N@polyimide) material for supercapacitor application. C/Ni<sub>3</sub>N was prepared using a co-sputtering technique, and this method also provided better adhesion of the electrode material over the substrate, which is helpful in improving bending performance. The ductile behavior of the sputter-grown electrode and the high flexibility of the polyimide tape provide ultimate flexibility to the C/Ni<sub>3</sub>N@polyimide-based supercapacitor. To achieve optimum electrochemical performance, a series of electrochemical tests were done in the presence of various electrolytes. Further, a flexible asymmetric supercapacitor (NC-FSC) (C/Ni<sub>3</sub>N//carbon@polyimide) was assembled by using C/Ni<sub>3</sub>N as a cathode and a carbon thin film as an anode, separated by a GF/C-glass microfiber soaked in optimized 1 M Li<sub>2</sub>SO<sub>4</sub> aqueous electrolyte. The NC-FSC offers a capacitance of 324 mF cm<sup>-2</sup> with a high areal energy density of 115.26 μWh cm<sup>-2</sup> and a power density of 811 μW cm<sup>-2</sup>, with ideal bending performance.