Structural and Electrochemical Study of the Li–Mn–Ni Oxide System within the Layered Single Phase Region
Bibliographic record
Abstract
The phase diagram of the Li–Mn–Ni-oxide pseudoternary system 1 was used as a starting point to understand the influence of transition metal composition and lithium content on the structures and electrochemistry of materials with compositions: Li 1+ x (Ni y Mn 1– y ) 1– x O 2 ( y = 0.2, 0.33, 0.4, 0.5, 0.6, and 0.7, 0 ≤ x ≤ 0.34). Mixed transition metal hydroxide precursors were synthesized via coprecipitation using a continuously stirred tank reactor. Powder X-ray diffraction results showed that additional spinel, rocksalt and/or layered phases were observed when the lithium content was less than that required for a single layered phase in agreement with ref 1. Additionally, residual Li 2 CO 3 was detected in the backscattered scanning electron microscopy images for samples with relatively high lithium content. The boundaries of the single phase region were therefore defined and the contour plots of the lattice constants versus composition in the single phase region were generated. Electrochemical measurements showed that phase separation should be avoided and single phase samples should be prepared in order to obtain the highest capacity. The maximum reversible capacity to 4.6 V was found near the middle of the single phase region when 0.5 < y < 0.7, whereas it was at the top (smallest lithium content) of the single phase region when y ≤ 0.5.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".