Impedance Reducing Additives and Their Effect on Cell Performance
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
Wound LiCoO2/graphite and Li[Ni0.42Mn0.42Co0.16]O2 (NMC)/graphite cells with 1 M LiPF6 in EC:EMC (3:7 by wt) electrolyte containing 2 wt% vinylene carbonate (VC) and/or 0.3 wt% trimethoxyboroxine (TMOBX) were studied using the High Precision Charger at Dalhousie University, automated cycling/storage, AC impedance and long-term cycling at elevated temperature. The additive, VC, improves lifetime performance by increasing coulombic efficiency and decreasing charge and discharge end point capacity slippage. The impact of TMOBX on cell performance depends on electrolyte and electrode choices within the cell. When TMOBX is added to control electrolyte in LiCoO2/graphite cells, the cycle life is improved and the impedance reduced. When added to VC-containing electrolyte the impedance is also reduced with the impact on lifetime not being clear at this time. When TMOBX is added to NMC/graphite cells with control electrolyte the impedance is decreased but when added to VC-containing electrolyte the impedance is unchanged. The impact on cycle life when TMOBX is added to NMC/graphite cells is a decrease in capacity fade but a lower measured coulombic efficiency. Therefore TMOBX appears to be an interesting additive with potential to decrease impedance and/or extend cycle life based on the electrolyte formulation and electrodes used in a Li-ion cell.
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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 | 0.001 |
| 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