MOF-derived 3D Fe-N-S co-doped carbon matrix/nanotube nanocomposites with advanced oxygen reduction activity and stability in both acidic and alkaline media
MOF-derived 3D Fe-N-S co-doped carbon matrix/nanotube nanocomposites with advanced oxygen reduction activity and stability in both acidic and alkaline media
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MOF 衍生的 3D Fe-N-S 共掺杂碳基体/纳米管纳米复合材料在酸性和碱性介质中具有先进的氧还原活性和稳定性
DOI：
10.1016/j.apcatb.2019.03.013
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发表时间：
2019-08-05
影响因子：
22.1
通讯作者：
Mu, Shichun
中科院分区：
文献类型：
--
作者：
Jin, Huihui;Zhou, Huang;Mu, Shichun
MOF衍生的碳基纳米材料因其优异的电催化性能、低成本和超稳定性而引起人们的极大关注。为了设计一种性能优良的催化剂，本工作以铁盐浸渍的ZIF-8为原料，通过热解制备了Fe、N、S共掺杂的碳基体/碳纳米管纳米复合材料（Fe-N-SCNN）。得益于碳基体和纳米管、丰富的铁氮化物和噻吩-S活性中心的协同效应，Fe-N-S CNN表现出优异的氧还原反应（ORR）性能，在碱性条件下半波电位为0.91 V vs. RHE，在酸性条件下半波电位为018 V vs. RHE，而商业Pt/C催化剂的那些分别为0.85V vs. RHE和0.795V vs. RHE。此外，在一次锌-空气电池中作为阴极催化剂的Fe-N-S CNN显示出700 mA h g（-1）的比容量。
MOF-derived carbon-based nanomaterials have attracted great attention due to the outstanding electrocatalytic performance, low-cost and super stability. To design an excellent catalyst, Fe, N and S codoped carbon matrix/carbon nanotube nanocomposites (Fe-N-S CNN) are prepared by pyrolysis of ZIF-8 impregnated with iron salt in this work. Benefiting from the synergistic effect of carbon matrix and nanotubes, abundant iron nitrides and thiophene-S active sites, the Fe-N-S CNN exhibits an excellent oxygen reduction reaction (ORR) performance with a half-wave potential of 0.91 V vs. RHE in alkaline conditions and 018 V vs. RHE in acidic conditions, while those of commercial Pt/C catalysts are 0.85 V vs. RHE and 0.795 V vs. RHE, respectively. Furthermore, Fe-N-S CNN as the cathode catalyst in a primary zinc-air battery shows a specific capacity of 700 mA h g(-1).