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首页> 外文期刊>Advanced Functional Materials >Sub-2 nm Ultrathin and Robust 2D FeNi Layered Double Hydroxide Nanosheets Packed with 1D FeNi-MOFs for Enhanced Oxygen Evolution Electrocatalysis
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Sub-2 nm Ultrathin and Robust 2D FeNi Layered Double Hydroxide Nanosheets Packed with 1D FeNi-MOFs for Enhanced Oxygen Evolution Electrocatalysis

机译：Sub-2 NM超薄和鲁棒2D Feni分层双氢氧化物纳米型纳米尾纳米纳米液包装为1D Feni-MOF，用于增强氧气进化电催化

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摘要

Water oxidation is a critical process for electrochemical water splitting due to its inherent sluggish kinetics. In spite of the high catalytic activities of noble metal-based electrocatalysts for water oxidation, their high cost, rare reserves, and low stabilities drive researchers to exploit efficient but low-cost electrocatalysts. Ultrathin 2D nanomaterials are considered efficient electrocatalysts for oxygen evolution reaction (OER) in water splitting. Herein, a facile strategy is proposed to fabricate 2D FeNi layered double hydroxide (FeNi-LDH) nanosheets packed with the in situ produced 1D sword-like FeNi-MOFs by using FeNi-LDH as a semi-sacrificial template. In the composite, the thickness of the formed nanosheets is only 1.34 nm, much thinner than that of most previously reported 2D materials. The 1D porous sword-like MOF nanorods have a long length of around 1.3 mu m. Due to the unique 2D/1D combined structure, the as-prepared FeNi LDH/MOF is directly used as electrocatalyst for the OER displays enhanced OER electrocatalytic performance with a low overpotential of 272 mV@100 mA cm(-2), a small Tafel slope of 34.1 mV dec(-1), high long-term durability. This work provides a new way to fabricate integrated ultrathin 2D nanosheets and MOFs as advanced catalysts for electrochemical energy conversion.
机译：由于其固有的缓慢动力学，水氧化是电化学水分裂的关键方法。尽管对水氧化的高贵金属电催化剂的高催化活性，其高成本，稀有储备和低稳定性驱动器，用于利用高效但低成本的电催化剂。超薄2D纳米材料被认为是水分分裂中的氧进化反应（OER）的有效电催化剂。在此，提出了一种通过使用FENI-LDH作为半牺牲模板填充用原位产生的1D剑状Feni-MOF包装的2D Feni层状双氢氧化物（Feni-LDH）纳米末端的体积策略。在复合材料中，形成的纳米片的厚度仅为1.34nm，比大多数先前报告的2D材料更薄。 1D多孔剑状MOF纳米棒的长度约为1.3μm。由于唯一的2D / 1D组合结构，用作欧尔的电催化剂直接用作电催化剂的原制增强的oer电催化性能，具有272 mv @ 100 ma cm（-2），小Tafel 34.1 MV DEC（-1），长期耐久性坡度。这项工作提供了一种制造集成超薄2D纳米片和MOF的新方法，作为用于电化学能量转换的先进催化剂。

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  • 来源
    《Advanced Functional Materials》 |2021年第43期|2103318.1-2103318.8|共8页
  • 作者

    Zheng Fuqin; Zhang Wanfu; Zhang Xiaoxia; Zhang Youlin; Chen Wei;

  • 作者单位

    Guangxi Normal Univ Coll Chem & Pharmaceut Sci Guangxi Key Lab Low Carbon Energy Mat Guilin 541004 Peoples R China;

    Guangxi Normal Univ Off Acad Affairs Ctr Teacher Educ Dev Guilin 541004 Peoples R China;

    Guangxi Normal Univ Coll Chem & Pharmaceut Sci Guangxi Key Lab Low Carbon Energy Mat Guilin 541004 Peoples R China;

    Guangxi Normal Univ Coll Chem & Pharmaceut Sci Guangxi Key Lab Low Carbon Energy Mat Guilin 541004 Peoples R China;

    Guangxi Normal Univ Coll Chem & Pharmaceut Sci Guangxi Key Lab Low Carbon Energy Mat Guilin 541004 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    electrocatalysis; FeNi; layered double hydroxides; metal-organic frameworks; nanosheets; oxygen evolution reaction;

    机译：电催化;Feni;层状双氢氧化物;金属有机框架;纳米蛋白酶;氧气进化反应;

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