Temperature-Dependent Discharge of Li-O<sub>2</sub> and Na-O<sub>2</sub> Batteries
Bibliographic record
Abstract
Li-O 2 and Na-O 2 batteries offer the promise of increased energy densities compared to Li-ion batteries but suffer from poor power and cycle life. Despite considerable research on the oxygen reduction reaction (ORR) in these cells at room temperature, limited work has been performed to understand the influence of temperature on the discharge characteristics. In this Letter, we show that the discharge capacity of Li-O 2 cells increases with increasing temperature while the discharge capacity of Na-O 2 cells decreases over the same temperature range. We show that the discharge behavior of Na-O 2 cells is dominated by increasing superoxide solubility with decreasing temperature. On the other hand, increasing Li + -O 2 – coupling strength with decreasing temperature promotes the formation of insoluble Li 2 O 2 through either disproportionation or a 2e – reduction mechanism, leading to reduced discharge capacity in Li-O 2 cells. Such findings highlight the complex and important effect that temperature has on ORR in Li-O 2 and Na-O 2 batteries.
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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".