Edge-Abundant Porous Fe3O4 Nanoparticles Docking in Nitrogen-Rich Graphene Aerogel as Efficient and Durable Electrocatalyst for Oxygen Reduction

IF 3.5 4区化学 Q2 ELECTROCHEMISTRY ChemElectroChem Pub Date : 2017-07-21 DOI:10.1002/celc.201700627

Zibin Liang, Wei Xia, Chong Qu, Bin Qiu, Hassina Tabassum, Song Gao, Prof. Ruqiang Zou

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引用次数: 33

Abstract

A novel Fe₃O₄ nanoparticles/nitrogen-doped graphene aerogel (denoted as Fe₃O₄@NGA) hybrid material with high porosity was prepared by using iron-based metal-organic frameworks (MOFs), [Fe₃O(H₂N-BDC)₃] (H₂N-BDC=2-aminoterephtalic acid), denoted as MIL-88B-NH₂, as templates and nitrogen-doped graphene aerogel (NGA) as the substrate. The obtained Fe₃O₄ nanoparticles demonstrate a rich edge area with abundant exposed active sites and defects, indicating great potential for oxygen adsorption and activation. When used as an electrocatalyst in alkaline solution, the Pt-free Fe₃O₄@NGA exhibited excellent oxygen reduction reaction (ORR) performance and dramatically enhanced durability and tolerance towards methanol compared to commercial Pt/C catalyst, revealing its great viability and potential in practical application.

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边缘丰富的多孔Fe3O4纳米颗粒对接富氮石墨烯气凝胶作为高效耐用的氧还原电催化剂

以铁基金属-有机骨架(MOFs) [fe30o (H2N-BDC)3] (H2N-BDC=2-氨基对苯二甲酸)(MIL-88B-NH2)为模板，氮掺杂石墨烯气凝胶(NGA)为底物，制备了一种新型高孔隙率Fe3O4纳米颗粒/氮掺杂石墨烯气凝胶(Fe3O4@NGA)杂化材料。制备的Fe3O4纳米颗粒具有丰富的边缘区域，具有丰富的暴露活性位点和缺陷，具有很大的氧吸附和活化潜力。当作为电催化剂在碱性溶液中使用时，与商业Pt/C催化剂相比，无Pt/C催化剂表现出优异的氧还原反应(ORR)性能，并显着提高了对甲醇的耐久性和耐受性，显示了其在实际应用中的巨大可行性和潜力。

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来源期刊

ChemElectroChem ELECTROCHEMISTRY-

CiteScore

7.90

自引率

2.50%

发文量

515

审稿时长

1.2 months

期刊介绍： ChemElectroChem is aimed to become a top-ranking electrochemistry journal for primary research papers and critical secondary information from authors across the world. The journal covers the entire scope of pure and applied electrochemistry, the latter encompassing (among others) energy applications, electrochemistry at interfaces (including surfaces), photoelectrochemistry and bioelectrochemistry.