Ultrafine Rh-Decorated 3D Porous Boron and Nitrogen Dual-Doped Graphene Architecture as an Efficient Electrocatalyst for Methanol Oxidation Reaction,ACS Applied Energy Materials

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Ultrafine Rh-Decorated 3D Porous Boron and Nitrogen Dual-Doped Graphene Architecture as an Efficient Electrocatalyst for Methanol Oxidation Reaction
ACS Applied Energy Materials ( IF 5.4 ) Pub Date : 2021-01-10 , DOI: 10.1021/acsaem.0c02293
Ying Yang ₁ , Huajie Huang ₁ , Cuizhen Yang ₁ , Haiyan He ₁

Affiliation

The development and utilization of high-performance Pt-alternative anode materials with acceptable costs have recently become a hot issue in the fuel cell field. Here, we put forward a convenient and cost-effective scalable method to the bottom-up construction of an ultrafine Rh nanoparticle-decorated three-dimensional (3D) porous boron and nitrogen dual-doped graphene (Rh/BN-G) architecture via a convenient self-assembly process. Such a 3D porous hybrid structure can not only facilitate the transport of external electrolytes into the innermost catalyst surface but also create a large number of catalytically active sites in the catalytic system. Consequently, the newly developed 3D Rh/BN-G architecture manifests unusual electrocatalytic abilities toward methanol oxidation reaction, including a large electrochemically active surface area, high mass/specific activities, and superior long-term stability, all of which are much better than those of the reference Rh/carbon black, Rh/carbon nanotube, and Rh/undoped graphene catalysts.

中文翻译：

超细铑修饰的3D多孔硼和氮双掺杂石墨烯结构作为甲醇氧化反应的高效电催化剂

具有可接受的成本的高性能Pt替代阳极材料的开发和使用近来已成为燃料电池领域的热门问题。在这里，我们提出了一种方便且经济高效的可扩展方法，该方法可通过自底向上构建超细Rh纳米粒子修饰的三维（3D）多孔硼和氮双掺杂石墨烯（Rh / BN-G）结构。方便的自组装过程。这样的3D多孔杂化结构不仅可以促进外部电解质向最内催化剂表面的输送，而且可以在催化体系中产生大量催化活性位。因此，新开发的3D Rh / BN-G结构对甲醇氧化反应表现出不同寻常的电催化能力，包括较大的电化学活性表面积，

更新日期：2021-01-25

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