Temperature-Dependent Discharge of Li-O<sub>2</sub> and Na-O<sub>2</sub> Batteries
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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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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 it