题目：

1D Monoclinic Ir_xRu_1-xO₂ Solid Solution with Ru-Enhanced Electrocatalytic Activity for Acidic Oxygen Evolution Reaction

作者：

Keyang Qin¹, Hao Yu¹, Wenxiang Zhu¹, Yunjie Zhou¹, Zhiyong Guo², Qi Shao³, Yangbo Wu⁴, Xuepeng Wang⁴, Youyong Li¹, Yujin Ji¹*, Fan Liao¹*, Yang Liu¹*, Zhenhui Kang^1,5* and Mingwang Shao¹*

摘要：

The rutile phase IrO₂, as a promising catalyst for oxygen evolution reaction (OER), still falls short of satisfactory activity. Here, a novel 1D monoclinic phase iridium-ruthenium oxide solid solution (m-Ir_xRu_1-xO₂) is reported. For m-Ir_xRu_1-xO₂ with different metal proportions, the optimal m-Ir_0.91Ru_0.09O_2-δ catalyst exhibits excellent OER activity under acidic conditions with an overpotential of 180 mV at 10 mA cm⁻². As an anode catalyst in a proton exchange membrane electrolyzer, m-Ir_0.91Ru_0.09O_2-δ with a low catalyst loading (0.1 mg cm⁻²) can operate ≈256 h at 1.8 V with a high current density over 900 mA cm⁻² at room temperature. Such a satisfied stability may have originated from the specific morphology and crystal structure, which is confirmed by the transient potential scanning test. Density functional theory calculations show that the Ru in the m-Ir_xRu_1-xO₂ facilitates decreasing the OER overpotentials due to the electron transfer from Ru to Ir.

影响因子：

19.924

分区情况：

一区