Platinum–boron doped graphene intercalated by carbon black for cathode catalyst in proton exchange membrane fuel cell
Platinum–boron doped graphene intercalated by carbon black for cathode catalyst in proton exchange membrane fuel cell
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DOI：
10.1016/j.energy.2015.06.019
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发表时间：
2015-09
期刊：
影响因子：
9
通讯作者：
H. N. Yang;Dong-Sung Lee;Kyeong-sik Park;W. J. Kim
中科院分区：
文献类型：
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作者：
H. N. Yang;Dong-Sung Lee;Kyeong-sik Park;W. J. Kim
为了增强质子交换膜燃料电池的电化学性能，特别是耐久性和电池性能，将缺电子硼掺杂到石墨烯中，然后沉积铂纳米颗粒。 X射线衍射、X射线光电子能谱、傅里叶变换红外光谱、拉曼光谱和透射电子显微镜分析证实了通过热解过程成功合成Pt硼掺杂石墨烯（Pt-B-Gr）。 Pt–B–Gr 在 Pt–B–Gr/CBx (x = 0.0, 0.2, 0.3, 0.4) 的基础上插入不同量的 CB（炭黑），应用于质子交换膜燃料电池的阴极。 ECSA（电化学活性表面积）随着 CB 含量增加至 Pt-B-Gr 的 30 wt.%，从 21.4 增加到 33.6 m2g−1，超过此值则略有下降至 29.6 m2g−1。进行 ADT（加速耐久性测试）时，每 400 次循环（最多 1200 次循环）对 ECSA 进行比较，以了解耐久性。结果表明，石墨烯中掺杂硼显着提高了耐用性。这可能是由于电子从石墨烯转移到硼而导致 Pt 和 B 之间的结合更紧密。电池性能的增强归因于B掺杂和插层的综合作用。
In order to enhance the electrochemical properties, especially durability and cell performance in proton exchange membrane fuel cell, electron deficient boron is doped into graphene, followed by deposition of Pt nanoparticles. Successful synthesis of Pt-boron doped graphene (Pt–B–Gr) by pyrolytic process is confirmed by X-ray diffraction, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, Raman spectroscopy and Transmission electron microscopy analyses. Pt–B–Gr is intercalated by different amount of CB (carbon black) based on Pt–B–Gr/CBx (x = 0.0, 0.2, 0.3, 0.4) and applied to cathode in proton exchange membrane fuel cell. The ECSA (electrochemical active surface area) is increased with CB content up to 30 wt.% of Pt–B–Gr from 21.4 to 33.6 m2g−1beyond which it is rather slightly decreased to 29.6 m2g−1. The ADT (accelerated durability test) is conducted where the ECSA is compared at every 400 cycles up to 1200 cycles for durability. The result exhibits that boron doping into graphene significantly enhances the durability. It might be attributed to more tight binding between Pt and B due to the electron transfer from graphene to boron. The cell performance is enhanced and it is attributed to the combined effect of B-doping and intercalation.