题目：

Highly Efficient Oxygen Evolution by a Thermocatalytic Process Cascaded Electrocatalysis Over Sulfur-Treated Fe-Based Metal–Organic-Frameworks

作者：

Kun Feng,¹ Duo Zhang,² Fangfang Liu,¹ Hui Li,² Jiabin Xu,¹ Yujian Xia,¹ Youyong Li,¹ Haiping Lin,*^,1 Shuao Wang,² Mingwang Shao,¹ Zhenhui Kang,*^,1 and Jun Zhong*^,1 

单位：

¹Institute of Functional Nano and Soft Materials Laboratory (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University Suzhou 215123, China
²State Key Laboratory of Radiation Medicine and Protection School of Radiation Medicine and Protection, Soochow University Suzhou 215123, China

摘要：

The oxygen evolution reaction (OER) is a bottleneck process for water splitting and finding highly efficient, durable, low-cost, and earth-abundant electrocatalysts is still a major challenge. Here a sulfur-treated Fe-based metal–organic-framework is reported as a promising electrocatalyst for the OER, which shows a low overpotential of 218 mV at the current density of 10 mA cm^-2 and exhibits a very low Tafel slope of 36.2 mV dec^-1 at room temperature. It can work on high current densities of 500 and 1000 mA cm^-2 at low overpotentials of 298 and 330 mV, respectively, by keeping 97% of its initial activity after 100 h. Notably, it can achieve 1000 mA cm^-2 at 296 mV with a good stability at 50°C, fully fitting the requirements for large-scale industrial water electrolysis. The high catalytic performance can be attributed to the thermocatalytic processes of H⁺ capture by –SO₃ groups from *OH or *OOH species, which cascades to the electrocatalytic pathway and then significantly reduces the OER overpotentials.

影响因子：

24.884

分区情况：

一区

链接：

https://doi.org/10.1002/aenm.202000184

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