An Fe-MOF nanosheet array with superior activity towards the alkaline oxygen evolution reaction†,Inorganic Chemistry Frontiers

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An Fe-MOF nanosheet array with superior activity towards the alkaline oxygen evolution reaction†
Inorganic Chemistry Frontiers ( IF 6.1 ) Pub Date : 2018-04-13 00:00:00 , DOI: 10.1039/c8qi00163d
Xiaoxue Zhang _{1,

2,

3,

4,

5} , Qin Liu _{1,

2,

3,

4,

5} , Xifeng Shi _{6,

7,

8,

9,

10} , Abdullah M. Asiri _{11,

12,

13,

14,

15} , Xuping Sun _{1,

2,

3,

4,

5}

Affiliation

It is highly desired to develop high-performance non-noble-metal electrocatalysts for the oxygen evolution reaction (OER) in alkaline solutions. In this communication, we report the hydrothermal synthesis of an Fe-MOF nanosheet array on nickel foam (Fe-MOF/NF) using aqueous Fe³⁺ and terephthalic acid as precursors. Such an Fe-MOF/NF shows superior electrocatalytic performance towards the OER in 1.0 M KOH with a low overpotential of 240 mV at 50 mA cm⁻² and a small Tafel slope of 72 mV dec⁻¹. Notably, this catalyst also exhibits high long-term electrochemical durability to maintain its activity for at least 30 h. Moreover, this catalyst electrode achieves a high turnover frequency of 0.74 mol O₂ per s at an overpotential of 300 mV.

中文翻译：

Fe-MOF纳米片阵列对碱性氧释放反应具有优异的活性†

迫切需要开发高性能的非贵金属电催化剂，用于碱性溶液中的氧释放反应（OER）。在此交流中，我们报告了使用水性Fe ³⁺和对苯二甲酸作为前体在镍泡沫上进行水热合成Fe-MOF纳米片阵列（Fe-MOF / NF）。这样的Fe-MOF / NF在1.0M KOH中对OER表现出优异的电催化性能，在50mA cm ^-2下具有240mV的低过电势和72mV dec ^-1的小Tafel斜率。值得注意的是，该催化剂还表现出高的长期电化学耐久性，以保持其活性至少30小时。此外，该催化剂电极在300mV的超电势下实现了0.74mol O ₂ / s的高周转频率。

更新日期：2018-04-13

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