Binder-free trimetallic phosphate nanosheets as an electrode : Theoretical and experimental investigation

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Tanveer Hussain
  • Thanayut Kaewmaraya
  • Muhammad Sufyan Javed
  • Charmaine Lamiel

Detail(s)

Original languageEnglish
Article number230556
Journal / PublicationJournal of Power Sources
Volume513
Online published25 Sep 2021
Publication statusPublished - 30 Nov 2021

Abstract

Transition metal phosphides and phosphates are newly emerging electrode material candidates in energy storage devices. For the first time, we report a uniformly distributed, interconnected, and well-aligned two-dimensional nanosheets made from trimetallic Zn-Co-Ga phosphate (ZCGP) electrode materials with preserved crystal phase. It is found that the ZCGP electrode material exhibits about 2.85 and 1.66 times higher specific capacity than mono- (Co-phosphate) and bimetallic phosphate (Zn-Co phosphate) electrode materials at the same current density. The trimetallic ZCGP electrode exhibits superior conductivity, lower internal resistance (IR) drop, and high coulombic efficiency compared to mono- and bimetallic phosphate. By means of density functional theory (DFT) calculations, ZCGP shows superior metallic conductivity due to the modified exchange splitting originating from 3d-orbitals of Co atoms in the presence of Zn and Ga. Moreover, hybrid supercapacitor (ZCGP//rGO) device is engineered which delivered a high energy density of 40 W h kg−1 and a high-power density of 7745 W kg−1, lighting 5 different colors of light emitting diodes (LEDs). These outstanding results confirm the promising battery-type electrode materials for energy storage applications.

Research Area(s)

  • Binder-free, DFT calculations, Hybrid supercapacitor, Nanosheets, Synergistic effect, Trimetallic phosphate

Citation Format(s)

Binder-free trimetallic phosphate nanosheets as an electrode : Theoretical and experimental investigation. / Hussain, Iftikhar; Hussain, Tanveer; Ahmed, Syed Bilal; Kaewmaraya, Thanayut; Ahmad, Muhammad; Chen, Xi; Javed, Muhammad Sufyan; Lamiel, Charmaine; Zhang, Kaili.

In: Journal of Power Sources, Vol. 513, 230556, 30.11.2021.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review