Attaining Full Li‐Ion Storage Capacity in Nearly Defect‐free and Preferential Orientation Grown LiCoPO<sub>4</sub> Via ab initio Solvothermal Crystallization Control
Bibliographic record
Abstract
Abstract Boosting energy density beyond the current status of Li‐ion batteries is actively sought after yet it remains very challenging. One promising pathway toward this goal is the development of defect‐free high‐voltage cathode materials via novel crystal engineered approaches. In response to this demand, the present study focuses on synthesizing LiCoPO 4 , which is a high‐voltage polyanionic compound, into nearly defect‐free structure and preferential orientation grown crystals via solvothermal method using ethylene glycol (EG) as surface energy control medium. Notably, ab initio molecular dynamics simulations and density functional theory calculations elucidate the role of interfacial energy variations induced by EG molecule interaction with particular crystal facets of LiCoPO 4 giving rise to the desired growth direction in comparison with hydrothermal method. In addition to solvent regulated crystal growth, Argon‐annealing alleviates the undesired charge transfer resistance on the crystal surface by eliminating EG residue and further reduces the anti‐site defect concentration, thereby engineering essentially highly ordered crystal structure. The novel LiCoPO 4 crystals are shown to possess nearly theoretical full discharge capacity (163.0 mAh g −1 and 774.7 Wh kg −1 at C/10) and superior rate capability (151.6 mAh g −1 and 716.9 Wh kg −1 at 1 C), a truly unmatched functionality offering new high‐voltage cathode design possibilities.
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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 | 0.001 |
| 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".