Design and Synthesis of In Situ VGCFs Improved LiFePO 4 Composite Cathode Materials
Bibliographic record
Abstract
One of the most important factors which currently limit the application of LiFePO4 cathode material in lithium-ion batteries is its low electronic conductivity. In order to enhance the electronic conductivity of LiFePO4 cathode material, in situ vapor-grown carbon fibers (VGCFs) improved LiFePO4 composite cathode materials were designed and synthesized in one step by microwave pyrolysis chemical vapor deposition (MCVD). The phase, microstructure and electrochemical performances of the composite cathode materials were investigated. Results show that network-like VGCFs formed during the MCVD process generally grow with an in situ growth mode on the graphite particles, which is extremely beneficial to improve the electronic conductivity of the composite cathode materials. The initial discharge capacity of the composite cathode materials, compared with the cathodes without in situ network-like VGCFs, increases from 109 mAhg-1 to 144 mAhg-1 at 0.5C rate, and the total electric resistance corresponding to the electron jumping varies from 538 Ω to 66 Ω.
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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".