A new LiCoPO4 polymorph via low temperature synthesis
Non-olivine LiCoPO4 microcrystals have been synthesized at low temperatures by microwave-assisted hydrothermal synthesis. The resulting octahedra-like micrometer-sized crystals exhibit a Pn21a symmetry and are isostructural to LiZnPO4. The orthorhombic lattice constants are a = 10.023(8) Å, b = 6.7...
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| Main Authors: | , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
04 Jan 2013
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| In: |
Journal of materials chemistry. A, Materials for energy and sustainability
Year: 2013, Volume: 1, Issue: 8, Pages: 2856-2862 |
| ISSN: | 2050-7496 |
| DOI: | 10.1039/C2TA00118G |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1039/C2TA00118G Verlag, lizenzpflichtig, Volltext: https://pubs.rsc.org/en/content/articlelanding/2013/ta/c2ta00118g 
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| Author Notes: | Carsten Jähne, Christoph Neef, Changhyun Koo, Hans-Peter Meyer and Rüdiger Klingeler |
| Summary: | Non-olivine LiCoPO4 microcrystals have been synthesized at low temperatures by microwave-assisted hydrothermal synthesis. The resulting octahedra-like micrometer-sized crystals exhibit a Pn21a symmetry and are isostructural to LiZnPO4. The orthorhombic lattice constants are a = 10.023(8) Å, b = 6.724(7) Å, and c = 4.963(4) Å. The microcrystals are metastable and transform to olivine LiCoPO4 upon heating above T ≈ 220 °C under an argon atmosphere. The magnetic properties confirm a phase pure material with a Co-valence of 2+, and imply long-range antiferromagnetic ordering below TN = 11 K. Electrochemical analysis by means of cyclic voltammetry displays a reversible redox couple at around 5.1 V/4.8 V vs. Li/Li+. |
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| Item Description: | Gesehen am 24.03.2021 Im Titel ist die Zahl 4 tiefgestellt |
| Physical Description: | Online Resource |
| ISSN: | 2050-7496 |
| DOI: | 10.1039/C2TA00118G |