دورية أكاديمية
From Doped Coordination Polymer Precursor to Cobalt‐Doped ZnO Electrocatalyst for Alkaline Hydrogen Evolution Reaction
| العنوان: | From Doped Coordination Polymer Precursor to Cobalt‐Doped ZnO Electrocatalyst for Alkaline Hydrogen Evolution Reaction |
|---|---|
| المؤلفون: | Roussin Lontio Fomekong, Paulin Kammi Yontchoum, Tobie Junior Matemb Ma Ntep, Hypolite Mathias Tedjieukeng Kamta, Patrice Kenfack Tsobnang, Svitlana Krüger, Jiří Šturala, Zdenek Sofer, Christoph Janiak, Bilge Saruhan, Arnaud Delcorte, John Ngolui Lambi |
| المصدر: | Advanced Energy & Sustainability Research, Vol 5, Iss 3, Pp n/a-n/a (2024) |
| بيانات النشر: | Wiley-VCH, 2024. |
| سنة النشر: | 2024 |
| المجموعة: | LCC:Environmental technology. Sanitary engineering LCC:Renewable energy sources |
| مصطلحات موضوعية: | alkaline electrocatalysis, cobalt‐doped zinc oxide, coprecipitation, doped coordination polymers, hydrogen evolution reaction, Environmental technology. Sanitary engineering, TD1-1066, Renewable energy sources, TJ807-830 |
| الوصف: | The large‐scale application of water electrolysis, for clean H2 production, requires the development of eco‐friendly and low‐cost electrocatalysts with high activity for hydrogen evolution reaction (HER) in alkaline media. The excellent alternatives to the benchmark noble metal‐based HER electrocatalyst are transition metal oxides (TMO). Because of the nontoxicity, cost‐effectiveness, availability, and easy electronic structure tuning, zinc oxide (ZnO) is a good TMO candidate. However, ZnO shows poor performance for HER electrocatalysis and therefore has been much less reported. Herein, it is reported that ZnO can be developed as a good HER electrocatalyst in alkaline media through simultaneously proper cobalt loading at the precursor level (coordination polymer) and defects engineering. The optimum amount of cobalt in ZnO shows an overpotential of 385 mV at 10 mA cm−2 (lower than that of ZnO and Co3O4) and a small Tafel slope of 76 mV dec−1. The introduction of cobalt at the precursor level and subsequently in the wurtzite frame of ZnO as revealed by the analyses, allows to considerably lower the bandgap and increasing the number of defects in the structure, thereby boosting the electrocatalytic performance. This work highlights the potential of cheap and environmentally friendly TMO as alternative HER electrocatalysts for large‐scale alkaline water electrolysis. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2699-9412 |
| Relation: | https://doaj.org/toc/2699-9412 |
| DOI: | 10.1002/aesr.202300232 |
| URL الوصول: | https://doaj.org/article/2f5ba0cc85aa4dfcaef8459f739a7ef6 |
| رقم الأكسشن: | edsdoj.2f5ba0cc85aa4dfcaef8459f739a7ef6 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 26999412 |
|---|---|
| DOI: | 10.1002/aesr.202300232 |