Loading...
Please wait, while we are loading the content...
Similar Documents
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
| Content Provider | Semantic Scholar |
|---|---|
| Author | Nurk, Gunnar Kooser, Kuno Urpelainen, Samuli Käämbre, Tanel Joost, Urmas Kodu, Margus Kivi, Indrek Kanarbik, Rait Kukk, Edwin Lust, Enn |
| Copyright Year | 2018 |
| Abstract | 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. |
| Starting Page | 589 |
| Ending Page | 596 |
| Page Count | 8 |
| File Format | PDF HTM / HTML |
| DOI | 10.1016/j.jpowsour.2017.12.080 |
| Volume Number | 378 |
| Alternate Webpage(s) | https://www.etis.ee/File/DownloadPublic/8cc7e096-810a-4076-b9cf-dfd7f202a1f6?name=Nurk_JPS+378+(2018)+589-596.pdf&type=application/pdf |
| Alternate Webpage(s) | https://doi.org/10.1016/j.jpowsour.2017.12.080 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
