Research Article
Studies on Formation and Decomposition of the Layered Cobaltite LixNayCoO2
Table 1
Indexing of reflections for electron-diffraction pattern (Figure
7).
| d exp, Å | Symbol | d
hex, Å (γ-NaCoO2, P63/mmc) | , Å (LiCoO2, R3m) | d
hex’ , Å (Li0.42Na0.36CoO2, P63/mc) |
| The reflections of (101)*cross-sections |
| 2.44 | ● ○ | 2.46 (010) | 2.43 (010), I = 0 | 2.46 (010) | 2.43 | ● ○ | 2.40 (10-1) | 2.40 (1-1-1) | 2.44 (10-1) | | | 2.40 (1-1-1) | 2.40 (1-1-1), twin. reflect. | 2.44 (1-1-1) | 0.821 | ○ | 0.821 (030) | 0.811 (030) | 0.820 (030) |
| The reflections of adjacent Laue zone |
| 2.31 | 1 | | 2.299 (10-2) | 2.31 (10-3) | 2.299 (10-2), twin. reflect. | 2.08 | 2 | 2.033 (1-1-3) | | | 1.97 | 3 | | 2.00 (1-1-4) | | 2.00 (1-1-4), twin. reflect. | 1.41 | 4 | | 1.405 (1-20) | 1.416 (1-20) | | | | 1.405 (1-20), twin. reflect. | | 1.368 | 5 | 1.375 (1-2-2) | | 1.367 (1-2-4) | 1.348 | 6 | | 1.346 (1-2-3) | | 1.347 | 7 | | 1.346 (2-1-3) | | 1.215 | 8 | 1.220 (022) | | | 1.215 | 9 | | 1.212 (021) | 1.210 (02-3) | 1.153 | 10 | | 1.150 (-204) | |
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