New Ir-V-W Electro-Catalyst Exceeding Pt for the Anode of Fuel Cells
Bibliographic record
Abstract
Very active catalysts 40%Ir-10%V-3%W/C and 40%Ir-10%V-10%W/C, as a novel suitable anode catalyst in PEMFCs, have been synthesized by an ethylene glycol reduction method. The nanostructured catalysts have been characterized by X-ray diffraction (XRD) and high-resolution transmission electron microscopy (TEM). Ir nanoparticles, after modification with V and further with W, show a narrow particle size distribution centered at 2 nm, and are uniformly dispersed on Vulcan XC-72. Investigation of the catalytic activity by means of linear sweep voltammetry (LSV) employing a rotating disk electrode (RDE) has revealed that 40%Ir-10%V-3%W/C catalyst exhibited very high electrocatalytic activity in terms of hydrogen oxidation reaction (HOR). About 76% higher current density was obtained for 40%Ir-10%V-3%W/C compared to that of 40%Pt/C except for 320% higher current density compared to that of the pure 40%Ir/C at 0.1 V versus RHE. The performance of a membrane electrode assembly (MEA) prepared with the 40%Ir-10%V-3%W/C as the anode catalyst generated a maximum power density of 625.9mW cm-2 at 0.59 V and 70 oC, which is 32% higher than that of commercial available 40%Pt/C.
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How this classification was reachedexpand
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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, 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".