A Novel Anode for Direct Borohydride-Hydrogen Peroxide Fuel Cell: Au Nanoparticles Decorated 3D Self-Supported Reduced Graphene Oxide Foam,ACS Sustainable Chemistry & Engineering

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A Novel Anode for Direct Borohydride-Hydrogen Peroxide Fuel Cell: Au Nanoparticles Decorated 3D Self-Supported Reduced Graphene Oxide Foam
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2019-05-31 00:00:00 , DOI: 10.1021/acssuschemeng.9b00192
Biaopeng Li ₁ , Congying Song ₁ , Xiaomei Huang ₁ , Ke Ye ₁ , Kui Cheng ₁ , Kai Zhu ₁ , Jun Yan ₁ , Dianxue Cao ₁ , Guiling Wang ₁

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A novel anode material of Au nanoparticles grown on a self-supported reduced graphene oxide foam is successfully fabricated in this work. Characterization methods like X-ray diffraction pattern, scanning electron microscope, and transmission electron microscope are employed to research the chemical component and surface morphology of the prepared electrode. Also, the electrochemical performance of the electrocatalyst on NaBH₄ oxidation is detailed researched in this work. As-prepared anode material exhibits good catalytic activity (661 mA·cm^–2) in 2 mol·L^–1 NaOH, 0.4 mol·L^–1 NaBH₄. Besides, low activation energy, small charge transfer impedance, and high fuel utilization are obtained during the oxidation of NaBH₄ on the prepared catalyst. Mechanism research shows that the oxidation of NaBH₄ is the first order reaction, and the exchanged electrons number is evaluated as 7.2 on the prepared electrode. In addition, power density of 60 mW·cm^–2, as well as good stability, is obtained on the assembled fuel cell. All these results are indicating that the as-prepared catalyst is an efficient anode catalyst for direct borohydride-hydrogen peroxide fuel cell.

中文翻译：

直接硼氢化物-过氧化氢燃料电池的新型阳极：金纳米粒子装饰3D自支撑还原石墨烯氧化物泡沫。

在这项工作中成功地制造了在自支撑的还原氧化石墨烯泡沫上生长的Au纳米颗粒的新型阳极材料。采用X射线衍射图谱，扫描电子显微镜和透射电子显微镜等表征方法对所制备电极的化学成分和表面形貌进行研究。另外，在这项工作中还详细研究了电催化剂对NaBH ₄氧化的电化学性能。制备的阳极材料在2mol·L ^–1 NaOH，0.4mol·L ^–1 NaBH _4中表现出良好的催化活性（661 mA·cm ^–2）。此外，在制备的催化剂上氧化NaBH _4的过程中，获得了较低的活化能，较小的电荷转移阻抗和较高的燃料利用率。机理研究表明，NaBH ₄的氧化是一级反应，在制备的电极上交换的电子数估计为7.2。另外，在组装好的燃料电池上获得了60 mW·cm ^-2的功率密度以及良好的稳定性。所有这些结果表明，所制备的催化剂是用于直接硼氢化物-过氧化氢燃料电池的有效阳极催化剂。

更新日期：2019-05-31

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