Ni sulfide nano-sheets as an efficient standalone electrode in direct ethanol fuel cells

Enas Taha Sayed; A.g. Olabi; Tabbi Wilberforce; Mohammed Al-Murisi; Kyu-jung Chae; Mohammad Ali Abdelkareem

doi:10.1016/j.jtice.2023.104772

Ni sulfide nano-sheets as an efficient standalone electrode in direct ethanol fuel cells

Enas Taha Sayed, A.g. Olabi^*, Tabbi Wilberforce, Mohammed Al-Murisi, Kyu-jung Chae, Mohammad Ali Abdelkareem^*

^*Corresponding author for this work

Research output: Contribution to journal › Correction

Abstract

Background: Direct alcoholic fuel cells such as DEFCs “direct ethanol fuel cells” have a high energy density and can potentially replace secondary batteries in portable applications. Two main challenges of the DEFCs are the low efficiency and the precious/expensive Pt-based electrodes. Methods: In this study, a standalone nickel sulfide electrode was grown on the surface of nickel foam via hydrothermal method followed by hydrothermal ion exchange. Significant findings: The prepared electrodes have a highly porous nanosheet structure demonstrating high ethanol oxidation activity. The electrode showed high stability and excellent mass transfer properties with a constant current density of 100 mAcm−2 at 0.5 V, two times that of the Ni-layered double hydroxide and ten times that of nickel foam. The superior activity was due to the enhanced charge transfer of the nickel sulfide (confirmed by EIS (electrochemical impedance spectroscopy)) and the improved mass transfer of the highly porous nanosheet structure. © 2023 Taiwan Institute of Chemical Engineers

Original language	English
Article number	104772
Number of pages	8
Journal	Journal of the Taiwan Institute of Chemical Engineers
Volume	146
Early online date	3 Mar 2023
DOIs	https://doi.org/10.1016/j.jtice.2023.104772
Publication status	Published - 1 May 2023

Keywords

Ethanol oxidation
Impedance spectroscopy
Mass transfer
Nanosheet structure
Nickel layered double hydroxide
Nickel sulfide
Standalone electrode

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10.1016/j.jtice.2023.104772

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@article{27e88d442d774aa9a4f749977bb3157b,

title = "Ni sulfide nano-sheets as an efficient standalone electrode in direct ethanol fuel cells",

abstract = "Background: Direct alcoholic fuel cells such as DEFCs “direct ethanol fuel cells” have a high energy density and can potentially replace secondary batteries in portable applications. Two main challenges of the DEFCs are the low efficiency and the precious/expensive Pt-based electrodes. Methods: In this study, a standalone nickel sulfide electrode was grown on the surface of nickel foam via hydrothermal method followed by hydrothermal ion exchange. Significant findings: The prepared electrodes have a highly porous nanosheet structure demonstrating high ethanol oxidation activity. The electrode showed high stability and excellent mass transfer properties with a constant current density of 100 mAcm−2 at 0.5 V, two times that of the Ni-layered double hydroxide and ten times that of nickel foam. The superior activity was due to the enhanced charge transfer of the nickel sulfide (confirmed by EIS (electrochemical impedance spectroscopy)) and the improved mass transfer of the highly porous nanosheet structure. {\textcopyright} 2023 Taiwan Institute of Chemical Engineers",

keywords = "Ethanol oxidation, Impedance spectroscopy, Mass transfer, Nanosheet structure, Nickel layered double hydroxide, Nickel sulfide, Standalone electrode",

author = "Sayed, {Enas Taha} and A.g. Olabi and Tabbi Wilberforce and Mohammed Al-Murisi and Kyu-jung Chae and Abdelkareem, {Mohammad Ali}",

year = "2023",

month = may,

day = "1",

doi = "10.1016/j.jtice.2023.104772",

language = "English",

volume = "146",

journal = "Journal of the Taiwan Institute of Chemical Engineers",

issn = "1876-1070",

publisher = "Taiwan Institute of Chemical Engineers",

}

TY - JOUR

T1 - Ni sulfide nano-sheets as an efficient standalone electrode in direct ethanol fuel cells

AU - Sayed, Enas Taha

AU - Olabi, A.g.

AU - Wilberforce, Tabbi

AU - Al-Murisi, Mohammed

AU - Chae, Kyu-jung

AU - Abdelkareem, Mohammad Ali

PY - 2023/5/1

Y1 - 2023/5/1

N2 - Background: Direct alcoholic fuel cells such as DEFCs “direct ethanol fuel cells” have a high energy density and can potentially replace secondary batteries in portable applications. Two main challenges of the DEFCs are the low efficiency and the precious/expensive Pt-based electrodes. Methods: In this study, a standalone nickel sulfide electrode was grown on the surface of nickel foam via hydrothermal method followed by hydrothermal ion exchange. Significant findings: The prepared electrodes have a highly porous nanosheet structure demonstrating high ethanol oxidation activity. The electrode showed high stability and excellent mass transfer properties with a constant current density of 100 mAcm−2 at 0.5 V, two times that of the Ni-layered double hydroxide and ten times that of nickel foam. The superior activity was due to the enhanced charge transfer of the nickel sulfide (confirmed by EIS (electrochemical impedance spectroscopy)) and the improved mass transfer of the highly porous nanosheet structure. © 2023 Taiwan Institute of Chemical Engineers

AB - Background: Direct alcoholic fuel cells such as DEFCs “direct ethanol fuel cells” have a high energy density and can potentially replace secondary batteries in portable applications. Two main challenges of the DEFCs are the low efficiency and the precious/expensive Pt-based electrodes. Methods: In this study, a standalone nickel sulfide electrode was grown on the surface of nickel foam via hydrothermal method followed by hydrothermal ion exchange. Significant findings: The prepared electrodes have a highly porous nanosheet structure demonstrating high ethanol oxidation activity. The electrode showed high stability and excellent mass transfer properties with a constant current density of 100 mAcm−2 at 0.5 V, two times that of the Ni-layered double hydroxide and ten times that of nickel foam. The superior activity was due to the enhanced charge transfer of the nickel sulfide (confirmed by EIS (electrochemical impedance spectroscopy)) and the improved mass transfer of the highly porous nanosheet structure. © 2023 Taiwan Institute of Chemical Engineers

KW - Ethanol oxidation

KW - Impedance spectroscopy

KW - Mass transfer

KW - Nanosheet structure

KW - Nickel layered double hydroxide

KW - Nickel sulfide

KW - Standalone electrode

UR - https://www.sciencedirect.com/science/article/pii/S1876107023001025

UR - http://www.scopus.com/inward/record.url?scp=85149750806&partnerID=8YFLogxK

U2 - 10.1016/j.jtice.2023.104772

DO - 10.1016/j.jtice.2023.104772

M3 - Correction

SN - 1876-1070

VL - 146

JO - Journal of the Taiwan Institute of Chemical Engineers

JF - Journal of the Taiwan Institute of Chemical Engineers

M1 - 104772

ER -

Ni sulfide nano-sheets as an efficient standalone electrode in direct ethanol fuel cells

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Keywords

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