Alkaline Media Regulated NiFe-LDH-Based Nickel–Iron Phosphides toward Robust Overall Water Splitting
نویسندگان
چکیده
The search for low-cost, high-performance, and robust stability bifunctional electrocatalysts to substitute noble metals-based counterparts overall water splitting generate clean sustainable hydrogen energy is of great significance challenges. Herein, a high-efficient bi-functional nickel–iron phosphide on NiFe alloy foam (denoted as e-NFP/NFF) with 3D coral-like nanostructure was controllably constructed by means alkali etching the introduction non-metallic atoms P. unique superhydrophilic structure can not only effectively facilitate exposure catalytic active sites increase electroactive surface area, but also accelerate charge transport bubble release. Furthermore, owing synergistic effect between bicomponent phosphides well strong electronic interactions multiple metal sites, as-fabricated catalyst behaves excellent performance evolution reaction (overpotentials 132 286 mV at 10 300 mA·cm−2, respectively) oxygen 181 303 in alkaline electrolytes. Impressively, cells integrated e-NFP/NFF electrodes cathode anode require low cell voltage (1.58 V) drive current density mA·cm−2 splitting, along remarkable long-term electrochemical durability tests. This study provides tunable synthetic strategy development efficient durable non-noble catalysts based construction an elaborate framework rational design structure.
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ژورنال
عنوان ژورنال: Catalysts
سال: 2023
ISSN: ['2073-4344']
DOI: https://doi.org/10.3390/catal13010198