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Investigation of Electrochemical Parameters on Cost-Effective Zn/Ni-Based Electrocatalysts for Electrochemical CO2Reduction Reaction to SYNGAS(H2+CO)

Electrochemical CO2 reduction reaction (CO2RR) has been studied in 0.1 M of KCl (pH of 6.96), NaHCO3 (pH of 8.3) and K2CO3 (pH of 11.36) cathodic solutions with various counter electrodes including graphite rod, SS316 rod and Pt mesh at different potential ranges on the Znx-Ni1-x bimetallic electroc...

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Main Authors: Shahrestani, S., Beheshti, M., Kakooei, S.
Format: Article
Published: IOP Publishing Ltd 2022
Online Access:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85129525818&doi=10.1149%2f1945-7111%2fac645a&partnerID=40&md5=255772bdc537d8b5bd9a4032bf8c5e0c
http://eprints.utp.edu.my/33147/
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spelling my.utp.eprints.331472022-07-06T07:58:48Z Investigation of Electrochemical Parameters on Cost-Effective Zn/Ni-Based Electrocatalysts for Electrochemical CO2Reduction Reaction to SYNGAS(H2+CO) Shahrestani, S. Beheshti, M. Kakooei, S. Electrochemical CO2 reduction reaction (CO2RR) has been studied in 0.1 M of KCl (pH of 6.96), NaHCO3 (pH of 8.3) and K2CO3 (pH of 11.36) cathodic solutions with various counter electrodes including graphite rod, SS316 rod and Pt mesh at different potential ranges on the Znx-Ni1-x bimetallic electrocatalysts. Among the Znx-Ni1-x electrocatalysts, the Zn-Ni electrode with a composition of 65 wt Zn and 35 wt Ni and cluster-like microstructure has the best performance for CO2RR by according to minimum coke formation and optimum CO and H2 faradaic efficiencies (CO FE = 55 and H2 FE = 45). The cyclic voltammetry (CV) measurements and gas chromatography (GC) analysis for the CO2RR showed that KCl solution as the cathodic electrolyte with pH of 7 has the best performance and appropriate faradaic efficiency for H2 (40) and CO(30) products in low potential value (-0.6 v) in this study. The best potential range for the CO2RR on the Zn-Ni bimetallic electrocatalyst in KCl solution with the scan rate (SR) 0.05 V. s-1 is between -0.3 V to -1 V vs Ag/AgCl. The use of stainless-steel electrode (SS316) as a counter electrode for electrochemical CO2RR is cost-effective and performs better than graphite electrode, but at high applied potential it oxidizes and dissolves in the electrolyte and then ions transfer to the Nafion membrane and poisons it. © 2022 The Electrochemical Society ("ECS"). Published on behalf of ECS by IOP Publishing Limited. DOI: 10.1149/1945-7111/ac645a. IOP Publishing Ltd 2022 Article NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85129525818&doi=10.1149%2f1945-7111%2fac645a&partnerID=40&md5=255772bdc537d8b5bd9a4032bf8c5e0c Shahrestani, S. and Beheshti, M. and Kakooei, S. (2022) Investigation of Electrochemical Parameters on Cost-Effective Zn/Ni-Based Electrocatalysts for Electrochemical CO2Reduction Reaction to SYNGAS(H2+CO). Journal of the Electrochemical Society, 169 (4). http://eprints.utp.edu.my/33147/
institution Universiti Teknologi Petronas
building UTP Resource Centre
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Institutional Repository
url_provider http://eprints.utp.edu.my/
description Electrochemical CO2 reduction reaction (CO2RR) has been studied in 0.1 M of KCl (pH of 6.96), NaHCO3 (pH of 8.3) and K2CO3 (pH of 11.36) cathodic solutions with various counter electrodes including graphite rod, SS316 rod and Pt mesh at different potential ranges on the Znx-Ni1-x bimetallic electrocatalysts. Among the Znx-Ni1-x electrocatalysts, the Zn-Ni electrode with a composition of 65 wt Zn and 35 wt Ni and cluster-like microstructure has the best performance for CO2RR by according to minimum coke formation and optimum CO and H2 faradaic efficiencies (CO FE = 55 and H2 FE = 45). The cyclic voltammetry (CV) measurements and gas chromatography (GC) analysis for the CO2RR showed that KCl solution as the cathodic electrolyte with pH of 7 has the best performance and appropriate faradaic efficiency for H2 (40) and CO(30) products in low potential value (-0.6 v) in this study. The best potential range for the CO2RR on the Zn-Ni bimetallic electrocatalyst in KCl solution with the scan rate (SR) 0.05 V. s-1 is between -0.3 V to -1 V vs Ag/AgCl. The use of stainless-steel electrode (SS316) as a counter electrode for electrochemical CO2RR is cost-effective and performs better than graphite electrode, but at high applied potential it oxidizes and dissolves in the electrolyte and then ions transfer to the Nafion membrane and poisons it. © 2022 The Electrochemical Society ("ECS"). Published on behalf of ECS by IOP Publishing Limited. DOI: 10.1149/1945-7111/ac645a.
format Article
author Shahrestani, S.
Beheshti, M.
Kakooei, S.
spellingShingle Shahrestani, S.
Beheshti, M.
Kakooei, S.
Investigation of Electrochemical Parameters on Cost-Effective Zn/Ni-Based Electrocatalysts for Electrochemical CO2Reduction Reaction to SYNGAS(H2+CO)
author_facet Shahrestani, S.
Beheshti, M.
Kakooei, S.
author_sort Shahrestani, S.
title Investigation of Electrochemical Parameters on Cost-Effective Zn/Ni-Based Electrocatalysts for Electrochemical CO2Reduction Reaction to SYNGAS(H2+CO)
title_short Investigation of Electrochemical Parameters on Cost-Effective Zn/Ni-Based Electrocatalysts for Electrochemical CO2Reduction Reaction to SYNGAS(H2+CO)
title_full Investigation of Electrochemical Parameters on Cost-Effective Zn/Ni-Based Electrocatalysts for Electrochemical CO2Reduction Reaction to SYNGAS(H2+CO)
title_fullStr Investigation of Electrochemical Parameters on Cost-Effective Zn/Ni-Based Electrocatalysts for Electrochemical CO2Reduction Reaction to SYNGAS(H2+CO)
title_full_unstemmed Investigation of Electrochemical Parameters on Cost-Effective Zn/Ni-Based Electrocatalysts for Electrochemical CO2Reduction Reaction to SYNGAS(H2+CO)
title_sort investigation of electrochemical parameters on cost-effective zn/ni-based electrocatalysts for electrochemical co2reduction reaction to syngas(h2+co)
publisher IOP Publishing Ltd
publishDate 2022
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85129525818&doi=10.1149%2f1945-7111%2fac645a&partnerID=40&md5=255772bdc537d8b5bd9a4032bf8c5e0c
http://eprints.utp.edu.my/33147/
_version_ 1738657461873672192
score 13.211869

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