Pt supported on Nanostructured NCNTs/RGO Composite Electrodes for Methanol Electrooxidation
Pt supported on Nanostructured NCNTs/RGO Composite Electrodes for Methanol Electrooxidation
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用于甲醇电氧化的纳米结构 NCNT/RGO 复合电极负载 Pt
DOI：
10.1002/celc.201500044
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
M. Bron
中科院分区：
文献类型：
--
作者：
P. Wang;T. Kottakkat;M. Bron
由N掺杂碳纳米管和还原氧化石墨烯（NCNT/RGO）组成的复合材料通过H2辅助热还原氧化石墨烯（GO），然后化学气相沉积NCNT形成NCNT/RGO/CC直接在碳布（CC）上制备。Pt纳米颗粒均匀地电沉积到这些纳米结构的复合电极上。通过拉曼光谱、X射线衍射和扫描电子显微镜分别验证了每个制备步骤的成功，表明NCNT和Pt的致密和均匀分布。如通过循环伏安法评估的，与Pt-NCNT/CC（没有RGO）相比，所得复合电极表现出增强的甲醇氧化质量比活性。前向与后向峰值电流值的比率（If/ib）和CO溶出伏安法揭示了与Pt-NCNT/CC或文献报道相比，Pt-NCNT/RGO/CC对中毒的高耐受性，导致有效的甲醇电氧化。
Composites consisting of N‐doped carbon nanotubes and reduced graphene oxide (NCNTs/RGO) are prepared directly on carbon cloth (CC) via H2‐assisted thermal reduction of graphene oxide (GO) followed by chemical vapor deposition of NCNTs to form NCNTs/RGO/CC. Pt nanoparticles are uniformly electrodeposited onto these nanostructured composite electrodes. The success of each preparation step is verified by Raman spectroscopy, X‐ray diffraction and scanning electron microscopy, respectively, indicating dense and homogeneous distribution of NCNTs and Pt. The resulting composite electrode exhibits enhanced mass specific activity for methanol oxidation in comparison to Pt‐NCNTs/CC (without RGO), as evaluated by cyclic voltammetry. The ratio of the forward to backward peak current values (if/ib) and the COadstripping voltammetry reveal high tolerance of Pt‐NCNTs/RGO/CC towards poisoning in comparison to Pt‐NCNTs/CC or literature reports, leading to an efficient methanol electrooxidation.