Unleashing the Full Potential of Electrochromic Heterostructured Nickel-Cobalt Phosphate for Optically Active High-Performance Asymmetric Quasi-Solid-State Supercapacitor Devices
Funding Sponsor
American University in Cairo
Author's Department
Energy Materials Laboratory
Second Author's Department
Energy Materials Laboratory
Third Author's Department
Energy Materials Laboratory
Fourth Author's Department
Energy Materials Laboratory
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https://doi.org/10.1021/acsami.3c11494
Document Type
Research Article
Publication Title
ACS Applied Materials and Interfaces
Publication Date
3-26-2025
doi
10.1021/acsami.3c11494
Abstract
The rational design of hybrid systems that combine capacitor and battery merits is crucial to enable the fabrication of high energy and power density devices. However, the development of such systems remains a significant barrier to overcome. Herein, we report the design of a Ni-Co phosphate (Ni3-xCox(PO4)2·8H2O) nanoplatelet-based system via a facile coprecipitation method at ambient conditions. The nanoplatelets exhibit multicomponent synergy, exceptional charge storage capabilities, rich redox active sites (ameliorating the redox reaction activity), and high ionic diffusion rate/electron transfer kinetics. The designed Ni3-xCox(PO4)2·8H2O offered a respectable gravimetric specific capacity and marvelous capability rate (966 and 595 C g-1 at 1 and 15 A g-1) over the Ni3(PO4)2·8H2O (327.3 C g-1) and Co3(PO4)2·8H2O (68 C g-1) counterparts. Additionally, the nanoplatelets showed enhanced photoactive storage performance with a 9.7% increase in the recorded photocurrent density. Upon integration of Ni3-xCox(PO4)2·8H2O as a positive pole and commercial activated carbon as a negative pole, the constructed hybrid supercapacitor device with PVA@KOH quasi-gel electrolyte exhibits great energy and power densities of 77.7 Wh kg-1 and 15998.54 W kg-1 with remarkable cycling stability of 6000 charging/discharging cycles and prominent Coulombic efficiency of 100%. Interestingly, two assembled devices are capable of glowing a red LED bulb for nearly 180 s. This research paves the way to design and fabricate electroactive species via a facile approach for boosting the design of a plethora of supercapattery devices.
First Page
17657
Last Page
17671
Recommended Citation
APA Citation
Ghanem, L.
Taha, M.
Shaheen, B.
&
Allam, N.
(2025). Unleashing the Full Potential of Electrochromic Heterostructured Nickel-Cobalt Phosphate for Optically Active High-Performance Asymmetric Quasi-Solid-State Supercapacitor Devices. ACS Applied Materials and Interfaces, 17(12), 17657–17671.
https://doi.org/10.1021/acsami.3c11494
MLA Citation
Ghanem, Loujain G., et al.
"Unleashing the Full Potential of Electrochromic Heterostructured Nickel-Cobalt Phosphate for Optically Active High-Performance Asymmetric Quasi-Solid-State Supercapacitor Devices." ACS Applied Materials and Interfaces, vol. 17, no. 12, 2025, pp. 17657–17671.
https://doi.org/10.1021/acsami.3c11494