Structural and Electrochemical Investigation of Fe<sub>x</sub>Si<sub>1-x</sub>Thin Films in Li Cells
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Bibliographic record
Abstract
FexSi1-x thin films with 0 ≤ x ≤ 0.46 have been prepared by combinatorial sputtering and their electrochemical properties have been studied in Li half-cells. X-ray diffraction showed that all of the films had an amorphous structure. Mössbauer effect spectra suggest that Fe was diluted in amorphous Si for x ≤ 0.23 and inactive FeSi2 was formed with further increase in x. For x ≤ 0.23, all Si in the thin films was active toward lithiation/delithiation. At higher Fe contents, the capacity of Fe-Si thin films dropped rapidly and no capacity was observed for x greater than 0.33. The voltage curve of Si to become depressed during lithiation with increasing Fe content, which may be the result of stress induced between the active Si phase and inactive phases in the alloy. For alloys with x > 0.23, the formation of inactive FeSi2 removes active Si from the alloy and results in the lowering of the reversible capacity.
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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