New oxide ion conducting solid electrolytes, Bi4V2O11: M; M = B, Al, Cr, Y, La
The compositional ranges of Bi4V2O11 solid solutions containing trivalent cations: B, Al, Cr, Y and La have been determined by means of a phase diagram study at solidus temperatures, ca. 850°C. At least three mechanisms for accommodating variable cation contents are required. These are nominally V →...
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| Format: | Article |
| Language: | English English |
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Royal Society of Chemistry
1996
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| Online Access: | http://psasir.upm.edu.my/id/eprint/35672/ http://psasir.upm.edu.my/id/eprint/35672/1/35672.pdf http://psasir.upm.edu.my/id/eprint/35672/7/jm9960600331.pdf |
| _version_ | 1848848119867899904 |
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| author | Lee, Chnoong Kheng Bay, Boon Hong West, Anthony R. |
| author_facet | Lee, Chnoong Kheng Bay, Boon Hong West, Anthony R. |
| author_sort | Lee, Chnoong Kheng |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | The compositional ranges of Bi4V2O11 solid solutions containing trivalent cations: B, Al, Cr, Y and La have been determined by means of a phase diagram study at solidus temperatures, ca. 850°C. At least three mechanisms for accommodating variable cation contents are required. These are nominally V → Bi, V → M, Bi → M; the first two also involve the formation of anion vacancies. The detailed mechanisms by which ions as different in size as B and La can enter the Bi4V2O11 structure cannot, however, be inferred from the phase diagrams. Phase diagrams at 500°C have much smaller solid-solution areas, indicating the stability and extent of the solid solutions to be very temperature-dependent. Conductivity studies show that La-, Y- and Al-doped materials, with a composition around Bi4V1.8M0.2O10.8, are the best conductors at 300°C with a conductivity value of up to 1.4 × 10–4Ω–1 cm–1. At 600°C, Al-doped materials have the highest conductivity, ca. 1 × 10–1Ω–1 cm–1. Conductivity Arrhenius plots show changes of slope associated with the phase transitions: α→β→γ for B, Al, Cr and β→γ for Y: data for La (γ-polymorph only) are almost linear. |
| first_indexed | 2025-11-15T09:29:26Z |
| format | Article |
| id | upm-35672 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-15T09:29:26Z |
| publishDate | 1996 |
| publisher | Royal Society of Chemistry |
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| spelling | upm-356722024-08-05T06:41:18Z http://psasir.upm.edu.my/id/eprint/35672/ New oxide ion conducting solid electrolytes, Bi4V2O11: M; M = B, Al, Cr, Y, La Lee, Chnoong Kheng Bay, Boon Hong West, Anthony R. The compositional ranges of Bi4V2O11 solid solutions containing trivalent cations: B, Al, Cr, Y and La have been determined by means of a phase diagram study at solidus temperatures, ca. 850°C. At least three mechanisms for accommodating variable cation contents are required. These are nominally V → Bi, V → M, Bi → M; the first two also involve the formation of anion vacancies. The detailed mechanisms by which ions as different in size as B and La can enter the Bi4V2O11 structure cannot, however, be inferred from the phase diagrams. Phase diagrams at 500°C have much smaller solid-solution areas, indicating the stability and extent of the solid solutions to be very temperature-dependent. Conductivity studies show that La-, Y- and Al-doped materials, with a composition around Bi4V1.8M0.2O10.8, are the best conductors at 300°C with a conductivity value of up to 1.4 × 10–4Ω–1 cm–1. At 600°C, Al-doped materials have the highest conductivity, ca. 1 × 10–1Ω–1 cm–1. Conductivity Arrhenius plots show changes of slope associated with the phase transitions: α→β→γ for B, Al, Cr and β→γ for Y: data for La (γ-polymorph only) are almost linear. Royal Society of Chemistry 1996 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/35672/1/35672.pdf text en http://psasir.upm.edu.my/id/eprint/35672/7/jm9960600331.pdf Lee, Chnoong Kheng and Bay, Boon Hong and West, Anthony R. (1996) New oxide ion conducting solid electrolytes, Bi4V2O11: M; M = B, Al, Cr, Y, La. Journal of Materials Chemistry, 6 (3). pp. 331-335. ISSN 0959-9428; ESSN: 1364-5501 http://pubs.rsc.org/en/content/articlelanding/1996/jm/jm9960600331#!divAbstract 10.1039/JM9960600331 |
| spellingShingle | Lee, Chnoong Kheng Bay, Boon Hong West, Anthony R. New oxide ion conducting solid electrolytes, Bi4V2O11: M; M = B, Al, Cr, Y, La |
| title | New oxide ion conducting solid electrolytes, Bi4V2O11: M; M = B, Al, Cr, Y, La |
| title_full | New oxide ion conducting solid electrolytes, Bi4V2O11: M; M = B, Al, Cr, Y, La |
| title_fullStr | New oxide ion conducting solid electrolytes, Bi4V2O11: M; M = B, Al, Cr, Y, La |
| title_full_unstemmed | New oxide ion conducting solid electrolytes, Bi4V2O11: M; M = B, Al, Cr, Y, La |
| title_short | New oxide ion conducting solid electrolytes, Bi4V2O11: M; M = B, Al, Cr, Y, La |
| title_sort | new oxide ion conducting solid electrolytes, bi4v2o11: m; m = b, al, cr, y, la |
| url | http://psasir.upm.edu.my/id/eprint/35672/ http://psasir.upm.edu.my/id/eprint/35672/ http://psasir.upm.edu.my/id/eprint/35672/ http://psasir.upm.edu.my/id/eprint/35672/1/35672.pdf http://psasir.upm.edu.my/id/eprint/35672/7/jm9960600331.pdf |