Influence of the reaction temperature on ...
Document type :
Article dans une revue scientifique
Permalink :
Title :
Influence of the reaction temperature on the oxygen reduction reaction on nitrogen-doped carbon nanotube catalysts
Author(s) :
Truong-Phuoc, Lai [Auteur]
Institut de chimie et procédés pour l'énergie, l'environnement et la santé [ICPEES]
Duong-Viet, Cuong [Auteur]
Institut de chimie et procédés pour l'énergie, l'environnement et la santé [ICPEES]
Hanoi University of Mining and Geology [HUMG]
Doh, Won-Hui [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Institut de chimie et procédés pour l'énergie, l'environnement et la santé [ICPEES]
Bonnefont, Antoine [Auteur]
Institut de Chimie de Strasbourg [ICS]
Janowska, Izabela [Auteur]
Institut de chimie et procédés pour l'énergie, l'environnement et la santé [ICPEES]
Begin, Dominique [Auteur]
Institut de chimie et procédés pour l'énergie, l'environnement et la santé [ICPEES]
Savinova, Elena R. [Auteur]
Institut de chimie et procédés pour l'énergie, l'environnement et la santé [ICPEES]
Granger, Pascal [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Pham-Huu, Cuong [Auteur]
Institut de chimie et procédés pour l'énergie, l'environnement et la santé [ICPEES]
Institut de chimie et procédés pour l'énergie, l'environnement et la santé [ICPEES]
Duong-Viet, Cuong [Auteur]
Institut de chimie et procédés pour l'énergie, l'environnement et la santé [ICPEES]
Hanoi University of Mining and Geology [HUMG]
Doh, Won-Hui [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Institut de chimie et procédés pour l'énergie, l'environnement et la santé [ICPEES]
Bonnefont, Antoine [Auteur]
Institut de Chimie de Strasbourg [ICS]
Janowska, Izabela [Auteur]
Institut de chimie et procédés pour l'énergie, l'environnement et la santé [ICPEES]
Begin, Dominique [Auteur]
Institut de chimie et procédés pour l'énergie, l'environnement et la santé [ICPEES]
Savinova, Elena R. [Auteur]
Institut de chimie et procédés pour l'énergie, l'environnement et la santé [ICPEES]
Granger, Pascal [Auteur]

Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Pham-Huu, Cuong [Auteur]
Institut de chimie et procédés pour l'énergie, l'environnement et la santé [ICPEES]
Journal title :
Catalysis Today
Volume number :
249
Pages :
236-243
Publisher :
Elsevier
Publication date :
2015-07-01
ISSN :
0920-5861
English keyword(s) :
Catalysis
Nitrogen-doped carbon nanotubes
Oxygen reduction reaction
Electrocatalysis
Nitrogen-doped carbon nanotubes
Oxygen reduction reaction
Electrocatalysis
HAL domain(s) :
Chimie/Catalyse
English abstract : [en]
Nitrogen-doped carbon nanotubes (N-CNT) were synthesized at 700 °C via the chemical vapour deposition (CVD) method and were used as catalysts in the oxygen reduction reaction (ORR) in 0.1 M KOH. The activity toward the ORR ...
Show more >Nitrogen-doped carbon nanotubes (N-CNT) were synthesized at 700 °C via the chemical vapour deposition (CVD) method and were used as catalysts in the oxygen reduction reaction (ORR) in 0.1 M KOH. The activity toward the ORR and the stability of these N-CNTs in alkaline solution were studied as a function of the reaction temperature and of the chemical treatment applied to the catalyst. The kinetic analysis of these catalysts was also carried out and compared to the ORR performance of the commercial Pt/C Vulcan XC72 catalyst. N-CNT-700BW catalyst without any chemical treatment after the CVD synthesis, possesses a half-wave potential E1/2 of approximately 0.82 V vs. RHE, 50 mV lower than the E1/2 value of Pt/C catalyst and a specific current density Jk at 0.9 V = 5.46 mA/mg at T = 25 °C. Removal of the major part of the iron growth catalyst by a chemical treatment resulted in a strongly decreased but still measurable activity. The activation energy of the N-CNT-based catalyst was calculated and is around 38 kJ mol−1 at an ORR overpotential of 300 mV. Increasing the temperature of the electrolyte up to 75 °C leads to a positive shift of the half-wave potential of the reaction as well as an increase of the H2O2 escape. The long-term stability test has also been conducted and indicates a good stability of the activity of the N-CNT-based catalysts under operation in alkaline media.Show less >
Show more >Nitrogen-doped carbon nanotubes (N-CNT) were synthesized at 700 °C via the chemical vapour deposition (CVD) method and were used as catalysts in the oxygen reduction reaction (ORR) in 0.1 M KOH. The activity toward the ORR and the stability of these N-CNTs in alkaline solution were studied as a function of the reaction temperature and of the chemical treatment applied to the catalyst. The kinetic analysis of these catalysts was also carried out and compared to the ORR performance of the commercial Pt/C Vulcan XC72 catalyst. N-CNT-700BW catalyst without any chemical treatment after the CVD synthesis, possesses a half-wave potential E1/2 of approximately 0.82 V vs. RHE, 50 mV lower than the E1/2 value of Pt/C catalyst and a specific current density Jk at 0.9 V = 5.46 mA/mg at T = 25 °C. Removal of the major part of the iron growth catalyst by a chemical treatment resulted in a strongly decreased but still measurable activity. The activation energy of the N-CNT-based catalyst was calculated and is around 38 kJ mol−1 at an ORR overpotential of 300 mV. Increasing the temperature of the electrolyte up to 75 °C leads to a positive shift of the half-wave potential of the reaction as well as an increase of the H2O2 escape. The long-term stability test has also been conducted and indicates a good stability of the activity of the N-CNT-based catalysts under operation in alkaline media.Show less >
Language :
Anglais
Audience :
Internationale
Popular science :
Non
European Project :
Administrative institution(s) :
ENSCL
CNRS
Centrale Lille
Univ. Artois
Université de Lille
CNRS
Centrale Lille
Univ. Artois
Université de Lille
Collections :
Research team(s) :
Remédiation et matériaux catalytiques (REMCAT)
Submission date :
2019-09-24T14:34:55Z
2024-01-30T16:41:35Z
2024-01-30T16:41:35Z
Files
- ORR temperature N CNT 0814.pdf
- Version finale acceptée pour publication (postprint)
- Open access
- Access the document