Cost effective alloys based catalysts for alkaline fuel cells application
Конференцијски прилог (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Alkaline fuel cells (AFCs) have recently become attractive as environmental friendly future power sources. It was really important having in mind that in alkaline media less expensive non noble catalysts could be used. Namely, successful alkaline anion exchange membrane development enabled benefits of faster kinetics of oxygen reduction reaction in alkaline solutions. In this study electrodeposited silver-palladium alloys of various composition were investigated and tested as the prospective catalysts for direct ethanol fuel cells application. All samples were characterized by scanning electron microscopy, energy dispersive spectroscopy, X-ray photoelectron spectroscopy, as well as by electrochemical techniques: cyclic voltammetry, polarization measurements at rotating disc electrode. The electrochemical active surface area was determined from the charge values corresponding to the reduction of Pd (II) oxide, assuming 420 μC for full oxide monolayer coverage. The optimal alloy composit...ion showing the best catalytic activity for oxygen reduction and ethanol oxidation, with as much as possible lower content of Pd, was determined. It was found that it could be possible to obtain alloys containing only ~ 20% of more noble metal – palladium, showing high activity for both anode and cathode reaction. The stability testing gave very promising results, as well.
Кључне речи:
alkaline fuel cells / silver-palladium alloys / atalysts / palladiumИзвор:
Programme and The Book of abstracts / Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019, 2019, 104-104Издавач:
- Belgrade : Materials Research Society of Serbia
Финансирање / пројекти:
- Развој, карактеризација и примена наноструктуираних композитних катализатора и интерактивних носача у горивним спреговима и електролизи воде (RS-MESTD-Basic Research (BR or ON)-172054)
- COST Action MP1407 - Electrochemical processing methodologies and corrosion protection for device and systems miniaturization (e-MINDS)
Институција/група
Институт техничких наука САНУ / Institute of Technical Sciences of SASATY - CONF AU - Gajić Krstajić, Ljiljana AU - Jović, Borka AU - Jović, Vladimir AU - Zabinski, Piotr AU - Elezović, Nevenka PY - 2019 UR - https://dais.sanu.ac.rs/123456789/6675 AB - Alkaline fuel cells (AFCs) have recently become attractive as environmental friendly future power sources. It was really important having in mind that in alkaline media less expensive non noble catalysts could be used. Namely, successful alkaline anion exchange membrane development enabled benefits of faster kinetics of oxygen reduction reaction in alkaline solutions. In this study electrodeposited silver-palladium alloys of various composition were investigated and tested as the prospective catalysts for direct ethanol fuel cells application. All samples were characterized by scanning electron microscopy, energy dispersive spectroscopy, X-ray photoelectron spectroscopy, as well as by electrochemical techniques: cyclic voltammetry, polarization measurements at rotating disc electrode. The electrochemical active surface area was determined from the charge values corresponding to the reduction of Pd (II) oxide, assuming 420 μC for full oxide monolayer coverage. The optimal alloy composition showing the best catalytic activity for oxygen reduction and ethanol oxidation, with as much as possible lower content of Pd, was determined. It was found that it could be possible to obtain alloys containing only ~ 20% of more noble metal – palladium, showing high activity for both anode and cathode reaction. The stability testing gave very promising results, as well. PB - Belgrade : Materials Research Society of Serbia C3 - Programme and The Book of abstracts / Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019 T1 - Cost effective alloys based catalysts for alkaline fuel cells application SP - 104 EP - 104 UR - https://hdl.handle.net/21.15107/rcub_dais_6675 ER -
@conference{ author = "Gajić Krstajić, Ljiljana and Jović, Borka and Jović, Vladimir and Zabinski, Piotr and Elezović, Nevenka", year = "2019", abstract = "Alkaline fuel cells (AFCs) have recently become attractive as environmental friendly future power sources. It was really important having in mind that in alkaline media less expensive non noble catalysts could be used. Namely, successful alkaline anion exchange membrane development enabled benefits of faster kinetics of oxygen reduction reaction in alkaline solutions. In this study electrodeposited silver-palladium alloys of various composition were investigated and tested as the prospective catalysts for direct ethanol fuel cells application. All samples were characterized by scanning electron microscopy, energy dispersive spectroscopy, X-ray photoelectron spectroscopy, as well as by electrochemical techniques: cyclic voltammetry, polarization measurements at rotating disc electrode. The electrochemical active surface area was determined from the charge values corresponding to the reduction of Pd (II) oxide, assuming 420 μC for full oxide monolayer coverage. The optimal alloy composition showing the best catalytic activity for oxygen reduction and ethanol oxidation, with as much as possible lower content of Pd, was determined. It was found that it could be possible to obtain alloys containing only ~ 20% of more noble metal – palladium, showing high activity for both anode and cathode reaction. The stability testing gave very promising results, as well.", publisher = "Belgrade : Materials Research Society of Serbia", journal = "Programme and The Book of abstracts / Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019", title = "Cost effective alloys based catalysts for alkaline fuel cells application", pages = "104-104", url = "https://hdl.handle.net/21.15107/rcub_dais_6675" }
Gajić Krstajić, L., Jović, B., Jović, V., Zabinski, P.,& Elezović, N.. (2019). Cost effective alloys based catalysts for alkaline fuel cells application. in Programme and The Book of abstracts / Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019 Belgrade : Materials Research Society of Serbia., 104-104. https://hdl.handle.net/21.15107/rcub_dais_6675
Gajić Krstajić L, Jović B, Jović V, Zabinski P, Elezović N. Cost effective alloys based catalysts for alkaline fuel cells application. in Programme and The Book of abstracts / Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019. 2019;:104-104. https://hdl.handle.net/21.15107/rcub_dais_6675 .
Gajić Krstajić, Ljiljana, Jović, Borka, Jović, Vladimir, Zabinski, Piotr, Elezović, Nevenka, "Cost effective alloys based catalysts for alkaline fuel cells application" in Programme and The Book of abstracts / Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019 (2019):104-104, https://hdl.handle.net/21.15107/rcub_dais_6675 .