Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.



Rational design of multiple prussian-blue analogues/NF composites for high-performance surpercapacitors

Abstract

In this project, a series of NiCoxFe1-x-PBA/NF (nickel foam) electrodes were successfully fabricated with different ratios of Co and Fe through in-situ chemical etching process. Their structures and morphology were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR) and scanning electron microscopes (SEM). Remarkably, this novel series of composites exhibit excellent supercapacitor performance. Among them, NiCo-PBA/NF electrode exhibits the best electrochemical performance with an area capacitance of 2242 mF cm-2 at 1 mA cm-2 in 3 M KOH solution and good cycling stability. Furthermore, asymmetric supercapacitor cells with NiCo-PBA/NF as the positive electrode and active carbon coated on the nickel foam as the negative electrode delivers very high energy density of 39.4 Wh kg-1 and high power density of 4003 W kg-1, which far exceeds other devices reported previously. This work highlights the designing strategy of such composite materials with optimized synergistic effect, which greatly promotes the supercapacitor development.

Back to tab navigation

Supplementary files

Article information


Submitted
15 Jan 2020
Accepted
21 May 2020
First published
22 May 2020

New J. Chem., 2020, Accepted Manuscript
Article type
Paper

Rational design of multiple prussian-blue analogues/NF composites for high-performance surpercapacitors

F. Yi, D. Xiong, S. Wang, C. Chen and M. Gu, New J. Chem., 2020, Accepted Manuscript , DOI: 10.1039/D0NJ00235F

Social activity

Search articles by author

Spotlight

Advertisements