Near ambient pressure X-ray photoelectron - and impedance spectroscopy study of NiO - Ce 0.9 Gd 0.1 O 2-δ anode reduction using a novel dual-chamber spectroelectrochemical cell
(2018) In Journal of Power Sources 378. p.589-596- Abstract
- This paper reports an experimental study, where the reduction of NiO-GDC to Ni-GDC is monitored using high temperature (HT) near ambient pressure (NAP) X-ray photoelectron spectroscopy (XPS) in combination with simultaneous impedance spectroscopy (IS). The experiment is carried out using a dual chamber (DC)-HT-NAP-XPS cell designed for membrane electrode studies. The dual chamber measurement cell enables adequate electrochemical feedback, i.e. the possibility of measuring the working electrode potential against a Pt reference electrode in a well-known environment (pO2 = 0.2 bar) and of monitoring the pO2 value on the studied electrode through open circuit voltage (OCV) measurements. Simultaneous changes of electrode impedance and O 1s, Ce... (More)
- This paper reports an experimental study, where the reduction of NiO-GDC to Ni-GDC is monitored using high temperature (HT) near ambient pressure (NAP) X-ray photoelectron spectroscopy (XPS) in combination with simultaneous impedance spectroscopy (IS). The experiment is carried out using a dual chamber (DC)-HT-NAP-XPS cell designed for membrane electrode studies. The dual chamber measurement cell enables adequate electrochemical feedback, i.e. the possibility of measuring the working electrode potential against a Pt reference electrode in a well-known environment (pO2 = 0.2 bar) and of monitoring the pO2 value on the studied electrode through open circuit voltage (OCV) measurements. Simultaneous changes of electrode impedance and O 1s, Ce 4d and Ni 3p electron binding energies are observed and discussed. The shape of the O 1s photoelectron peak is significantly influenced by the equilibria of Ce4+ ↔ Ce3+ and Ni2+ ↔ Ni0, influenced by pO2, in analysis chamber. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/cafbebbd-35ed-4d03-8d74-50bb6877613c
- author
- Nurk, Gunnar ; Kooser, Kuno ; Urpelainen, Samuli LU ; Käämbre, Tanel LU ; Joost, Urmas ; Kodu, Margus ; Kivi, Indrek ; Kanarbik, Rait ; Kukk, Edwin and Lust, Enn
- organization
- publishing date
- 2018-02-01
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of Power Sources
- volume
- 378
- pages
- 589 - 596
- publisher
- Elsevier
- external identifiers
-
- scopus:85040321132
- ISSN
- 0378-7753
- DOI
- 10.1016/j.jpowsour.2017.12.080
- language
- English
- LU publication?
- yes
- id
- cafbebbd-35ed-4d03-8d74-50bb6877613c
- date added to LUP
- 2018-01-17 09:20:07
- date last changed
- 2022-04-09 21:31:24
@article{cafbebbd-35ed-4d03-8d74-50bb6877613c, abstract = {{This paper reports an experimental study, where the reduction of NiO-GDC to Ni-GDC is monitored using high temperature (HT) near ambient pressure (NAP) X-ray photoelectron spectroscopy (XPS) in combination with simultaneous impedance spectroscopy (IS). The experiment is carried out using a dual chamber (DC)-HT-NAP-XPS cell designed for membrane electrode studies. The dual chamber measurement cell enables adequate electrochemical feedback, i.e. the possibility of measuring the working electrode potential against a Pt reference electrode in a well-known environment (pO2 = 0.2 bar) and of monitoring the pO2 value on the studied electrode through open circuit voltage (OCV) measurements. Simultaneous changes of electrode impedance and O 1s, Ce 4d and Ni 3p electron binding energies are observed and discussed. The shape of the O 1s photoelectron peak is significantly influenced by the equilibria of Ce4+ ↔ Ce3+ and Ni2+ ↔ Ni0, influenced by pO2, in analysis chamber.}}, author = {{Nurk, Gunnar and Kooser, Kuno and Urpelainen, Samuli and Käämbre, Tanel and Joost, Urmas and Kodu, Margus and Kivi, Indrek and Kanarbik, Rait and Kukk, Edwin and Lust, Enn}}, issn = {{0378-7753}}, language = {{eng}}, month = {{02}}, pages = {{589--596}}, publisher = {{Elsevier}}, series = {{Journal of Power Sources}}, title = {{Near ambient pressure X-ray photoelectron - and impedance spectroscopy study of NiO - Ce 0.9 Gd 0.1 O 2-δ anode reduction using a novel dual-chamber spectroelectrochemical cell}}, url = {{http://dx.doi.org/10.1016/j.jpowsour.2017.12.080}}, doi = {{10.1016/j.jpowsour.2017.12.080}}, volume = {{378}}, year = {{2018}}, }