张亮教授及其合作者在j. am. chem. soc上发表论文-尊龙凯时

作者：

jinghao chen^1#, yirui ma^1#, chen cheng^2#, tao huang¹, ruihao luo¹, jingwen xu¹, xiaoyang wang¹, taoli jiang¹, hongxu liu¹, shuang liu¹, ting huang¹*, liang zhang²*, and wei chen¹*

单位：

¹department of applied chemistry, school of chemistry and materials science, hefei national research center for physical sciences at the microscale, university of science and technology of china hefei, anhui, 230026, china.

²institute of functional nano & soft materials (funsom), jiangsu key laboratory of advanced negative carbon technologies, soochow university, suzhou 215123, china.

摘要：

proton exchange membrane water electrolysis (pemwe) is a highly promising hydrogen production technology for enabling a sustainable energy supply. herein, we synthesize a single-atom co-doped core–shell heterostructured ru@ruo₂ (co-ru@ruo₂) catalyst via a combination of ultrafast pulse-heating and calcination methods as an iridium (ir)-free and durable oxygen evolution reaction (oer) catalyst in acidic conditions. co-ru@ruo₂ exhibits a low overpotential of 203 mv and excellent stability over a 400 h durability test at 10 ma cm^–2. when implemented in industrial pemwe devices, a current density of 1 a cm^–2 is achieved with only 1.58 v under an extremely low catalyst loading of 0.34 mg_ru cm^–2, which is decreased by 4 to 6 times as compared to other reported ru-based catalysts. even at 500 ma cm^–2, the pemwe device could work stably for more than 200 h. structural characterizations and density functional theory (dft) calculations reveal that the single-atom co doping and the core–shell heterostructure of ru@ruo₂ modulate the electronic structure of pristine ruo₂, which reduce the energy barriers of oer and improve the stability of surface ru. this work provides a unique avenue to guide future developments on low-cost pemwe devices for hydrogen production.

影响因子：

14.5

分区情况：

一区

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