Electrochemical Property–Structure Correlation for Ni-Based Layered Na-Ion Cathodes
Bibliographic record
Abstract
A class of Ni-based layered Na x Ni 0.5 Mn 0.3 Co 0.2 O 2 oxide composites is prepared via a solid-state process. Mixed P-, O-, and P-/O-type phases can be obtained by tuning the Na content and annealing temperature, as demonstrated by structural and chemical characterization. Among these materials, the triphase P2/P′3/O′3-type composite exhibits the best overall electrochemical performance. Specifically, this triphase composite delivers a high specific capacity of 126 mA h g –1 in the potential range of 1.5–4.2 V, high rate capability (∼72% of its initial capacity at a rate of 5 C), and good capacity retention after 100 cycles at 0.5 C. The structural transition mechanism for each phase upon electrochemical cycling is investigated, providing insights into the correlation between electrochemical properties and the crystal structure of Ni-rich layered Na x Ni 0.5 Mn 0.3 Co 0.2 O 2 oxide composites.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| 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) | 0.001 | 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 source (direct Gemma or distilled Codex), 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".