Perspectives On Mass Production Of Carbon Supported Pt-Based Electrocatalysts For Proton Exchange Membrane Fuel Cells
Notice bibliographique
Résumé
Proton exchange membrane fuel cells (PEMFCs) have launched the process of extensive commercialization after decades of protracted and unremitting efforts. To recover the post-pandemic economy and overcome climate issues, PEMFC is being given an increasing role as one of strategies. However, the performance, cost, and durability still are the primary challenges PEMFCs need to overcome in order to be able to compete with incumbent technologies and Li-ion batteries. One promising approach is to improve the performance and durability of carbon supported Pt-based electrocatalysts that have been considered as the best electrocatalysts among the electrocatalysts available, and thus decreasing the loading, consequently the performance, cost, and durability of PEMFCs. In recent decades, plenty of highly active and stable carbon supported Pt-based electrocatalysts have been rationally designed and successfully synthesized by controlling the size or shape, and optimizing the carbon supports. However, most synthesis systems are only at the laboratory-level and the commonly used electrocatalysts in practical application are still Pt/C without definite morphology. There still lack methods for mass production of carbon supported Pt-based electrocatalysts with size and shape control. Herein, some viewpoints on how to promote mass production of carbon supported Pt-based electrocatalysts are suggested after analyzing the experimental details, e.g., the selection of materials, the loading methods of Pt-based electrocatalysts onto carbon, the reaction conditions, the post-synthesis treatment methods as well as their impacts on the prepared electrocatalyst, which are very important to better control the size and shape, decrease the manufacturing cost of the electrocatalysts, and promote the development of the feasible reaction systems for mass production. The functionalization of carbon support could boost the performance and durability of supported Pt-based electrocatalysts, but the potential of functionalization of carbon still needs to be further developed. From the points of environment and economy, one-pot synthesis is favored to simplify the synthesis process compared with ex-situ mixing method; the aqueous system (cheap and green) or the system with minimal use of organic solvent are superior to the organic reaction system; decreasing the use of organic ligands is preferred to simplify the post-synthesis treatment process, which are beneficial to promote the mass production of carbon supported Pt-based electrocatalysts.
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Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».