Hierarchical 2D yarn-ball like metal-organic framework NiFe(dobpdc) as bifunctional electrocatalyst for efficient overall electrocatalytic water splitting
| Autor: | Min Liu, Emiel J. M. Hensen, Zichen Xu, Lixia Qi, Yaqiong Su, Kang Liu, Ryan Yeh-Yung Lin, Guanghui Zhang |
|---|---|
| Přispěvatelé: | Inorganic Materials & Catalysis, EIRES Chem. for Sustainable Energy Systems |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment Oxygen evolution Structural diversity 02 engineering and technology General Chemistry Overpotential 010402 general chemistry 021001 nanoscience & nanotechnology Electrocatalyst 01 natural sciences 0104 chemical sciences chemistry.chemical_compound chemistry Chemical engineering Water splitting General Materials Science Metal-organic framework SDG 7 - Affordable and Clean Energy 0210 nano-technology Bifunctional Linker SDG 7 – Betaalbare en schone energie |
| Zdroj: | Journal of Materials Chemistry A, 8(43), 22974-22982. Royal Society of Chemistry |
| ISSN: | 2050-7496 2050-7488 |
| Popis: | Metal-organic framework (MOF) is a powerful material for electrocatalytic applications due to its structural diversity and tunability. Herein, the MOF with an extended organic linker, NiFe(dobpdc), is synthesized and investigated for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER). NiFe(dobpdc) features a yarn-ball like structure assembly from 2D nanosheets subunits and high electrocatalytic activity properties. Theoretical calculations suggest the dobpdc4- can extract/release charges in the electrocatalytic reaction of (∗ → OH∗) and (OH∗ → O∗), respectively. This bifunctional NiFe(dobpdc) electrocatalyst significantly elevates electrocatalytic performance with a lowest overpotential of 207 mV@10 mA cm-2 for OER and 113 mV@10 mA cm-2 for HER, meanwhile, the ultralow overpotentials needed to achieve the high current density of 100 mA cm-2 for OER (251 mV) and HER (170 mV). This study provides a promising strategy to design MOF electrocatalysts for electrocatalytic applications. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|