A 2D NiFe Bimetallic Metal–Organic Frameworks for Efficient Oxygen Evolution Electrocatalysis
A 2D NiFe Bimetallic Metal–Organic Frameworks for Efficient Oxygen Evolution Electrocatalysis
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DOI：
10.1002/eem2.12024
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发表时间：
2019-01
影响因子：
15
通讯作者：
Y. Hao;Qinglin Liu;Ying Zhou;Zeqian Yuan;Yanan Fan;Zhuofeng Ke;C. Su;Guangqin Li
中科院分区：
文献类型：
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作者：
Y. Hao;Qinglin Liu;Ying Zhou;Zeqian Yuan;Yanan Fan;Zhuofeng Ke;C. Su;Guangqin Li
析氧反应（OER）是许多重要能量转换装置的基础，包括金属-空气电池和水裂解。在此，开发了一种优化的NiFe基金属有机骨架作为OER的高效活性材料。对于所制备的Ni0.75Fe0.25 BDC，仅需0.31 V的低过电位即可在0.1 m KOH电解液中提供10 mA cm−2的电流密度和43.7 mV dec−1的良好塔菲尔斜率，这比RuO 2更上级。这种高效的催化性能是由于在Ni基MOF中引入Fe可以有益于动力学和电荷转移效率，从而导致对OER的最佳活性。此外，所获得的活性材料表现出良好的稳定性，这表明在可持续的电化学能量存储和转换装置中具有巨大的潜在价值。
The oxygen evolution reaction (OER) is the cornerstone for many important energy conversion devices, including metal–air battery and water splitting. Herein, an optimized NiFe‐based metal–organic framework is developed as highly efficient active material for OER. It just needs a low overpotential of 0.31 V to deliver a current density of 10 mA cm−2 with a favorable Tafel slope of 43.7 mV dec−1 in 0.1 m KOH electrolyte for the as‐prepared Ni0.75Fe0.25 BDC, which is superior to RuO2. This efficient catalytic performance is due to the introduction of Fe in Ni‐based MOFs could benefit the kinetics and charge transfer efficiency, resulting in the optimal activity toward OER. Besides, the obtained active material demonstrates good stability, suggesting the great potential value in sustainable electrochemical energy storage and conversion devices.