2014
DOI: 10.1016/j.ssi.2014.01.019
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Effect of Nb substitution for Ti on the electrical properties of Yb2Ti2O7-based oxygen ion conductors

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Cited by 9 publications
(6 citation statements)
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“…The niobium spectrum with two peaks located at 209.2 and 207.2 eV is in agreement with the binding energies of Nb in Nb 2 O 5 , ,, revealing Nb (V) in H 0.92 K 0.08 TiNbO 5 nanowires. In addition, the spectra of titanium and oxygen also suggest a normal state of Ti (IV) in the oxide and the presence of the oxygen element in the H 0.92 K 0.08 TiNbO 5 phase, respectively. ,, Moreover, the element contents in the H 0.92 K 0.08 TiNbO 5 nanowires are also confirmed by inductively coupled plasma-atomic emission spectrometry. The result presented in Figure S5 shows that the practical molar ratio of K, Ti, and Nb is 0.076:0.872:1.128, which is close to the theoretical stoichiometric value of 0.08:1:1 as expected.…”
Section: Resultssupporting
confidence: 81%
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“…The niobium spectrum with two peaks located at 209.2 and 207.2 eV is in agreement with the binding energies of Nb in Nb 2 O 5 , ,, revealing Nb (V) in H 0.92 K 0.08 TiNbO 5 nanowires. In addition, the spectra of titanium and oxygen also suggest a normal state of Ti (IV) in the oxide and the presence of the oxygen element in the H 0.92 K 0.08 TiNbO 5 phase, respectively. ,, Moreover, the element contents in the H 0.92 K 0.08 TiNbO 5 nanowires are also confirmed by inductively coupled plasma-atomic emission spectrometry. The result presented in Figure S5 shows that the practical molar ratio of K, Ti, and Nb is 0.076:0.872:1.128, which is close to the theoretical stoichiometric value of 0.08:1:1 as expected.…”
Section: Resultssupporting
confidence: 81%
“…As observed, the XPS spectrum of K 2p shown in Figure 3d proves the presence of potassium element, 17 suggesting that potassium ions can be found still in the final product after soaking for 72 h, although the ionexchange reaction has already reached equilibrium. The niobium spectrum with two peaks located at 209.2 and 207.2 eV is in agreement with the binding energies of Nb in Nb 2 O 5 , 32,45,46 revealing Nb (V) in H 0.92 K 0.08 TiNbO 5 nanowires. In addition, the spectra of titanium and oxygen also suggest a normal state of Ti (IV) in the oxide and the presence of the oxygen element in the H 0.92 K 0.08 TiNbO 5 phase, respectively.…”
Section: Acs Applied Materials and Interfacessupporting
confidence: 83%
“…As Figure A shows, the Nb 3d XPS peaks of fresh Nb 2 O 5 -800 were split well into two peaks as Nb 3d 3/2 at 209.7 eV and Nb 5+ 3d 5/2 at 207.0 eV, which is in accord with chemical interaction between Nb and O in a stable Nb 2 O 5 lattice. According to the literature value, the BE value of Nb 5+ is ∼207.0 ± 0.3 eV (Nb 3d 5/2 ) and that of Nb 4+ generally is 1.0 ± 0.2 eV lower. The Nb 3d 5/2 binding energy in the used catalyst has a shift to lower values. The Nb 3d 5/2 peak can be deconvoluted into two peaks at 207.0 and 206.2 eV, corresponding to Nb 5+ and Nb 4+ , respectively.…”
Section: Resultsmentioning
confidence: 91%
“…[49][50][51][52][53][54] Both E A values are rather similar, which suggests a similar charge transport mechanism. E A was found to be 0.79 eV for GTO and 0.88 eV for GTO and HTO respectively, which is in a typical range for oxygen ion conduction.…”
Section: Dielectric Propertiesmentioning
confidence: 73%
“…E A was found to be 0.79 eV and 0.88 eV for GTO and HTO respectively, which is in a typical range for oxygen ion conduction. [49][50][51][52][53][54] Both E A values are rather similar, which suggests a similar charge transport mechanism. E A was determined by assuming a linear Arrhenius behaviour of r ¼ r 0 exp(E A /k B T).…”
Section: Dielectric Propertiesmentioning
confidence: 73%