Active Site Tailoring of Metal-Organic Frameworks for Highly Efficient Oxygen Evolution

Feng Hu; Deshuang Yu; Wen-Jing ZengZih-Yi LinSilin HanYajie SunHui WangJianwei RenSung-Fu HungLinlin LiShengjie Peng

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Active Site Tailoring of Metal-Organic Frameworks for Highly Efficient Oxygen Evolution

机译：Active Site Tailoring of Metal-Organic Frameworks for Highly Efficient Oxygen Evolution

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The direct correlation between active sites and catalytic activity inmultiple-component metal-organic frameworks (MOFs) is key tounderstanding their mechanism of oxygen evolution reaction (OER) butremains vague. Herein, supported multiple-site MOFs are adopted as modelcatalysts to quantitatively study the composition-dependent OERperformance. Ni MOFs on Fe metal substrate possess the highest intrinsicOER activity with the Ni/Fe ratio of 1:2 in the presence of metal leaching ofthe substrate during synthesis. Further introducing a proper amount of Cufurther boosts the OER performance of Cu-doped NiFe MOFs with animpressively low overpotential of 200 mV at 10 mA cm~(?2). Spectroscopicanalysis with theoretical study indicates that the copper doping within theNiFe MOFs induces electron redistribution for high valence Fe sites with anoptimized balance of OH/OOH adsorption and decreased energy barrier forimproved OER. This work sheds light on the active site tailoring of MOFswhich highly correlates with the OER activity.

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《Advanced energy materials》 |2023年第29期|2301224.1-2301224.12|共12页
作者
Feng Hu; Deshuang Yu; Wen-Jing ZengZih-Yi LinSilin HanYajie SunHui WangJianwei RenSung-Fu HungLinlin LiShengjie Peng;
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作者单位

College of Materials Science and Technology Nanjing University of Aeronautics and Astronautics Nanjing 210016, China;

Department of AppliedChemistry National Yang Ming Chiao TungUniversity Hsinchu 300, Taiwan;

Department of Mechanical Engineering Science University of Johannesburg Johannesburg 2092, South AfricaCollege of Materials Science and Technology Nanjing University of Aeronautics and Astronautics Nanjing 210016,China;

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正文语种英语
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active site tailoring; in situ characterizations; multiple-component metalorganic frameworks; oxygen evolution reaction;

Active Site Tailoring of Metal-Organic Frameworks for Highly Efficient Oxygen Evolution

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