Article ; Online: Efficient and durable MoFeNi hydroxide anode: Room temperature recrystallization regulated morphology-, valence- and crystallinity-dependent water oxidation performance
Journal of Colloid And Interface Science. 2024 Jan., v. 653 p.627-633
2024
Abstract: The formation of crystal-amorphous (c-a) interfaces by modulating the crystallinity of the material is a promising strategy for the oxygen evolution reaction (OER). Herein, a recrystallization growth at room temperature to regulate the crystallinity of ... ...
Abstract | The formation of crystal-amorphous (c-a) interfaces by modulating the crystallinity of the material is a promising strategy for the oxygen evolution reaction (OER). Herein, a recrystallization growth at room temperature to regulate the crystallinity of catalysts is reported. The MoFeNi hydroxide precursor was synthesized by the solvothermal method, and then the crystallinity of the material was controlled by adjusting the concentration of Na₂S in the immersion solution. These c-a heterogeneous interfaces significantly improved the OER activity of the catalysts while ensuring structural stability. The best catalyst exhibited a low overpotential of 195 mV to reach 10 mA cm⁻² in 1 M KOH. It also showed good stability, operating stably at high current densities for 96 h without significant degradation. In addition, the anode of the two-electrode water splitting electrolyzer required only 1.46 V to reach 10 mA cm⁻² and operated for a long time without significant degradation. This method will provide new insights and perspectives for developing efficient and stable OER catalysts. |
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Keywords | ambient temperature ; anodes ; catalysts ; crystal structure ; crystallization ; oxidation ; oxygen production ; Hydroxides ; Crystal-amorphous heterostructures ; Electrocatalysis ; Oxygen evolution reaction ; Nanosheets ; HER ; OER ; LDH ; XRD ; LSV ; CV ; RHE ; TEM ; XPS ; EIS ; ECSA |
Language | English |
Dates of publication | 2024-01 |
Size | p. 627-633. |
Publishing place | Elsevier Inc. |
Document type | Article ; Online |
ZDB-ID | 241597-5 |
ISSN | 1095-7103 ; 0021-9797 |
ISSN (online) | 1095-7103 |
ISSN | 0021-9797 |
DOI | 10.1016/j.jcis.2023.09.107 |
Database | NAL-Catalogue (AGRICOLA) |
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