التفاصيل البيبلوغرافية
| العنوان: |
Molten-Salt-Protected Pyrolytic Approach for Fabricating Borate-Modified Cobalt–Iron Spinel Oxide with Robust Oxygen-Evolving Performance |
| المؤلفون: |
Junfeng Xie (1486315), Jun Li (6494), Luyao Kang (11186074), Jiechen Li (8079278), Zimeng Wei (8867858), Fengcai Lei (1808662), Pin Hao (1554460), Bo Tang (23472) |
| سنة النشر: |
2021 |
| المجموعة: |
Smithsonian Institution: Digital Repository |
| مصطلحات موضوعية: |
Biophysics, Biochemistry, Evolutionary Biology, Inorganic Chemistry, Space Science, Environmental Sciences not elsewhere classified, Chemical Sciences not elsewhere classified, valence metal species, valence metal sites, small tafel slope, physical characterizations indicated, limiting half reaction, large current density, electrochemical water splitting, discovering facile routes, cofe spinel oxide, catalytically active species, robust water electrolysis, improved intrinsic activity, abundant oer catalysts, salt synthesis strategy, large surface area, achieve synergistic enrichment, protected pyrolytic approach, durable oer catalyst, robust oxygen, protected pyrolysis, high activity, term catalysis, surface modification |
| الوصف: |
Oxygen evolution reaction (OER) holds tremendous attention owing to its critical role as the rate-limiting half reaction of the electrochemical water splitting for hydrogen production. Hence, discovering facile routes to fabricate the earth-abundant OER catalysts with high activity and durability is of great importance to realize commercial water splitting. Herein, a modified molten-salt-protected pyrolysis (MSPP) approach was proposed, which leads to simultaneous fabrication of cobalt–iron spinel oxide nanoassembly and borate modification on the surface of the catalyst. Physical characterizations indicated that both the MSPP method and the surface borates could optimize the electronic structure of CoFe spinel oxide, leading to the enrichment of local high-valence metal species with enhanced electropositivity and thus resulting in improved intrinsic activity toward OER catalysis. Besides, due to multiple structural merits including a large surface area, enriched high-valence metal sites, improved intrinsic activity, and facilitated charge transfer behavior, the borate-modified CoFe spinel oxide catalyst synthesized via the MSPP route exhibits outstanding OER activity with low overpotential, large current density, and small Tafel slope. In addition, the activation process was confirmed during long-term catalysis, resulting in a remarkable 140% performance enhancement with high operational stability even for 72 h. This work proposed a modified molten-salt synthesis strategy to achieve synergistic enrichment of catalytically active species and surface modification, and the as-fabricated borate-modified CoFe spinel oxide could act as an efficient and durable OER catalyst for robust water electrolysis. |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
unknown |
| Relation: |
https://figshare.com/articles/journal_contribution/Molten-Salt-Protected_Pyrolytic_Approach_for_Fabricating_Borate-Modified_Cobalt_Iron_Spinel_Oxide_with_Robust_Oxygen-Evolving_Performance/16830727 |
| DOI: |
10.1021/acssuschemeng.1c05718.s001 |
| الاتاحة: |
https://doi.org/10.1021/acssuschemeng.1c05718.s001 |
| Rights: |
CC BY-NC 4.0 |
| رقم الانضمام: |
edsbas.CD2EAE65 |
| قاعدة البيانات: |
BASE |