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首页> 外文期刊>Advanced energy materials >Biomass-Derived 3D Carbon Aerogel with Carbon Shell-Confined Binary Metallic Nanoparticles in CNTs as an Efficient Electrocatalyst for Microfluidic Direct Ethylene Glycol Fuel Cells
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Biomass-Derived 3D Carbon Aerogel with Carbon Shell-Confined Binary Metallic Nanoparticles in CNTs as an Efficient Electrocatalyst for Microfluidic Direct Ethylene Glycol Fuel Cells

机译：生物质衍生的3D碳气凝胶，碳纳米管中的碳壳限制二元金属纳米粒子作为微流控直接乙二醇燃料电池的高效电催化剂

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摘要

Flexible and 3D carbon aerogels (CAs) composed of carbon nanotubes (CNTs) with carbon shell-confined binary palladium-nickel (Pd-x-Ni-y) nanocatalysts on carbon fibers (Pd-x-Ni-y/NSCNT/CA) have been developed through a facile chemical vapor deposition method. The 3D porous carbon network and the synergistic effect of carbon shell-confined bimetal nanoparticles of rationally constructed aerogels facilitate enhanced electrocatalytic and antipoisoning activities toward ethylene glycol (EG) oxidation reaction compared to the commercial Pt/C catalyst. With the 3D morphological features and direct growth of Pd-Ni bimetallic nanoparticles encapsulated CNTs on carbon fibers, the Pd-52-Ni-48/NSCNT/CA delivers a maximum microfluidic direct ethylene glycol fuel cell (mu DEGFC) power density and durability of, respectively, 62.8 mW cm(-2) and 60 h. The superior performance observed, with Pd-52-Ni-48/NSCNT/CA amongst the catalysts reported in the literature, opens an exciting research avenue towards powering next-generation, portable electronics.
机译：柔性和3D碳气凝胶（CA），由碳纳米管（CNT）和碳纤维上碳壳受限的二元钯镍（Pd-x-Ni-y）纳米催化剂组成（Pd-x-Ni-y / NSCNT / CA）已经通过一种简便的化学气相沉积方法开发了这种方法。与市售Pt / C催化剂相比，合理构建的气凝胶的3D多孔碳网络和碳壳结合的双金属纳米颗粒的协同效应有助于增强对乙二醇（EG）氧化反应的电催化和抗毒作用。 Pd-52-Ni-48 / NSCNT / CA具有3D形态特征和Pd-Ni双金属纳米颗粒封装的碳纳米管在碳纤维上的直接生长，可提供最大的微流体直接乙二醇燃料电池（mu DEGFC）功率密度和耐用性。分别为62.8 mW cm（-2）和60 h。在文献报道的催化剂中，Pd-52-Ni-48 / NSCNT / CA表现出的优异性能为为下一代便携式电子设备提供动力提供了令人兴奋的研究途径。

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