Abstract
Electrical double layer capacitors (EDLCs) featuring low-cost and solution-processable electrode materials have attracted significant research interest for their green and economical applications in energy harvesting and storage devices. Here, we demonstrate a novel synthetic route for films of an underexplored 3-D hexagonal bismuth chalcohalide, Bi13S18I2, and investigate its potential as the active electrode material in EDLC-type supercapacitors. The synthetic procedure has been optimised and comprises the lowest annealing temperature (150 °C) and the shortest processing time (1 h) currently reported. When integrated in a symmetrical EDLC with an aqueous NaClO4 electrolyte, the Bi13S18I2-based device achieves a remarkable areal capacitance of 210.68 mF cm−2 with 99.7% capacitance retention after 5000 cycles. Both the Bi13S18I2 powder and thin-film electrodes have been characterized through XRD, XPS, Raman spectroscopy, and SEM. The superior stability, low-cost, and facile synthesis of Bi13S18I2 proves its promising potential for supercapacitor applications.
Original language | English |
---|---|
Pages (from-to) | 1638-1646 |
Journal | Journal of Materials Chemistry A: materials for energy and sustainability |
Volume | 7 |
Issue number | 4 |
Early online date | 20 Dec 2018 |
DOIs | |
Publication status | Published - 28 Jan 2019 |
Fingerprint
Dive into the research topics of 'Facile synthesis and characterization of Bi13S18I2 films as a stable supercapacitor electrode material'. Together they form a unique fingerprint.Datasets
-
Facile Synthesis and Characterization of Bi13S18I2 Films as a Stable Supercapacitor Electrode Material
Robertson, N. (Creator), Adams, K. (Creator), Franco Gonzalez, A. (Creator), Mallows, J. (Creator), Li, T. (Creator) & Thijssen, J. (Creator), Edinburgh DataShare, 21 Dec 2018
DOI: 10.7488/ds/2479, https://pubs.rsc.org/en/Content/ArticleLanding/2018/TA/C8TA11029H
Dataset