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Modulating Electronic Structure of Metal-Organic Framework for Efficient Electrocatalytic Oxygen Evolution

机译：调节金属-有机骨架的电子结构以有效地产生电催化氧

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摘要

Exploring effective electrocatalysts for oxygen evolution reaction (OER) is a crucial requirement of many energy storage and conversion systems, involving fuel cells, water splitting, and metal-air batteries. Herein, a heterogeneity metal-organic framework (MOF) is prepared by the assembling of metals, terephthalic (A) and 2-aminoterephthalic ligands (B), defined as A(2.7)B-MOF-FeCo1.6. More importantly, A(2.7)B-MOF-FeCo1.6 exhibits excellent OER activity with an ultralow overpotential of 288 mV at 10 mA cm(-2) and a Tafel slope of 39 mV dec(-1). The high electrocatalytic performance for OER is attributed to the optimized electronic structure of the intrinsic catalytic center in MOFs via the engineering of the metal node and linkers. The work offers not only a benchmark for pure MOFs in electrocatalysis but also a new efficient strategy to improve electrocatalytic performance by electronic structure engineering of catalytic active centers in MOFs.
机译：探索用于氧气释放反应（OER）的有效电催化剂是许多能量存储和转换系统（包括燃料电池，水分解和金属空气电池）的关键要求。在此，通过金属，对苯二甲酸（A）和2-氨基对苯二甲酸配体（B）的组装制备异质金属-有机骨架（MOF），定义为A（2.7）B-MOF-FeCo1.6。更重要的是，A（2.7）B-MOF-FeCo1.6具有出色的OER活性，在10 mA cm（-2）时的超低过电势为288 mV，Tafel斜率为39 mV dec（-1）。 OER的高电催化性能归因于通过金属节点和连接基的工程设计，MOF中固有催化中心的优化电子结构。这项工作不仅为电催化中的纯MOF提供了基准，而且为通过MOF中催化活性中心的电子结构工程改善电催化性能提供了新的有效策略。

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  • 来源
    《Advanced energy materials》 |2018年第29期|1801564.1-1801564.7|共7页
  • 作者

    Xue Ziqian; Li Yinle; Zhang Yawei; Geng Wei; Jia Baoming; Tang Jia; Bao Shixiong; Wang Hai-Ping; Fan Yanan; Wei Zhang-wen; Zhang Zishou; Ke Zhuofeng; Li Guangqin; Su Cheng-Yong;

  • 作者单位

    Sun Yat Sen Univ, MOE Lab Bioinorgan & Synthet Chem, Lehn Inst Funct Mat, Sch Chem, Guangzhou 510275, Guangdong, Peoples R China;

    Sun Yat Sen Univ, MOE Lab Bioinorgan & Synthet Chem, Lehn Inst Funct Mat, Sch Chem, Guangzhou 510275, Guangdong, Peoples R China;

    Sun Yat Sen Univ, MOE Lab Bioinorgan & Synthet Chem, Lehn Inst Funct Mat, Sch Chem, Guangzhou 510275, Guangdong, Peoples R China;

    Sun Yat Sen Univ, Key Lab Polymer Composite & Funct Mat, Minist Educ, Sch Mat Sci & Engn, Guangzhou 510275, Guangdong, Peoples R China;

    Sun Yat Sen Univ, MOE Lab Bioinorgan & Synthet Chem, Lehn Inst Funct Mat, Sch Chem, Guangzhou 510275, Guangdong, Peoples R China;

    Sun Yat Sen Univ, MOE Lab Bioinorgan & Synthet Chem, Lehn Inst Funct Mat, Sch Chem, Guangzhou 510275, Guangdong, Peoples R China;

    Sun Yat Sen Univ, MOE Lab Bioinorgan & Synthet Chem, Lehn Inst Funct Mat, Sch Chem, Guangzhou 510275, Guangdong, Peoples R China;

    Sun Yat Sen Univ, MOE Lab Bioinorgan & Synthet Chem, Lehn Inst Funct Mat, Sch Chem, Guangzhou 510275, Guangdong, Peoples R China;

    Sun Yat Sen Univ, MOE Lab Bioinorgan & Synthet Chem, Lehn Inst Funct Mat, Sch Chem, Guangzhou 510275, Guangdong, Peoples R China;

    Sun Yat Sen Univ, MOE Lab Bioinorgan & Synthet Chem, Lehn Inst Funct Mat, Sch Chem, Guangzhou 510275, Guangdong, Peoples R China;

    Sun Yat Sen Univ, MOE Lab Bioinorgan & Synthet Chem, Lehn Inst Funct Mat, Sch Chem, Guangzhou 510275, Guangdong, Peoples R China;

    Sun Yat Sen Univ, Key Lab Polymer Composite & Funct Mat, Minist Educ, Sch Mat Sci & Engn, Guangzhou 510275, Guangdong, Peoples R China;

    Sun Yat Sen Univ, MOE Lab Bioinorgan & Synthet Chem, Lehn Inst Funct Mat, Sch Chem, Guangzhou 510275, Guangdong, Peoples R China;

    Sun Yat Sen Univ, MOE Lab Bioinorgan & Synthet Chem, Lehn Inst Funct Mat, Sch Chem, Guangzhou 510275, Guangdong, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    electrocatalysis; electronic structure; MIL-88B; MOFs; oxygen evolution reaction;

    机译：电催化;电子结构;MIL-88B;MOFs;析氧反应;

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