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Atomically Dispersed Cu–N–C as a Promising Support for Low-Pt Loading Cathode Catalysts of Fuel Cells
ACS Applied Energy Materials ( IF 5.4 ) Pub Date : 2020-03-27 00:00:00 , DOI: 10.1021/acsaem.0c00255 Liting Cui 1 , Zhengjian Li 1 , Haining Wang 1 , Lirui Cui 1 , Jin Zhang 1 , Shanfu Lu 1 , Yan Xiang 1
ACS Applied Energy Materials ( IF 5.4 ) Pub Date : 2020-03-27 00:00:00 , DOI: 10.1021/acsaem.0c00255 Liting Cui 1 , Zhengjian Li 1 , Haining Wang 1 , Lirui Cui 1 , Jin Zhang 1 , Shanfu Lu 1 , Yan Xiang 1
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It is of great significance to reduce the amount of platinum for the oxygen reduction reaction (ORR) in polymer electrolyte membrane fuel cells. In this work, a copper single atom coordinated by nitrogen doped carbon nanotubes is employed as a support for the deposition of platinum nanoparticles (Pt/Cu-SAC), according to the prediction of the density functional theory calculation, which reveals the ORR activity of Pt/Cu-SAC should be improved in comparison to that of Pt/C due to the weaker adsorption of oxygen. The prepared Pt/Cu-SAC exhibits more promising ORR activity than the commercial Pt/C due to the synergetic effect of Cu-SAC on the Pt particles. Furthermore, the fuel cell based on Pt/Cu-SAC with a cathode Pt loading of 0.025 mg cm–2 exhibits a peak power density of 526 mW cm–2, which is quite similar to that obtained with the commercial Pt/C with a cathode Pt loading of 0.1 mg cm–2. The Pt/Cu-SAC paves the way to design low-Pt cathode catalysts for the polymer electrolyte membrane fuel cells.
中文翻译：
原子分散的Cu–N–C作为燃料电池低铂负载阴极催化剂的有前途的支持
对于聚合物电解质膜燃料电池中的氧还原反应（ORR），减少铂的量具有重要意义。在这项工作中，根据密度泛函理论计算的预测，采用了一个由氮掺杂的碳纳米管配位的铜单原子作为铂纳米颗粒（Pt / Cu-SAC）沉积的载体。与Pt / C相比，由于氧气的吸收较弱，因此应改善Pt / Cu-SAC。由于Cu-SAC对Pt颗粒的协同作用，所制备的Pt / Cu-SAC比市售Pt / C表现出更有希望的ORR活性。此外，基于Pt / Cu-SAC的燃料电池具有0.025 mg cm –2的阴极Pt负载，其峰值功率密度为526 mW cm –2，这与市售Pt / C阴极负载Pt / C为0.1 mg cm –2所获得的非常相似。Pt / Cu-SAC为设计用于聚合物电解质膜燃料电池的低Pt阴极催化剂铺平了道路。
更新日期：2020-03-27
中文翻译：
原子分散的Cu–N–C作为燃料电池低铂负载阴极催化剂的有前途的支持
对于聚合物电解质膜燃料电池中的氧还原反应（ORR），减少铂的量具有重要意义。在这项工作中，根据密度泛函理论计算的预测，采用了一个由氮掺杂的碳纳米管配位的铜单原子作为铂纳米颗粒（Pt / Cu-SAC）沉积的载体。与Pt / C相比，由于氧气的吸收较弱，因此应改善Pt / Cu-SAC。由于Cu-SAC对Pt颗粒的协同作用，所制备的Pt / Cu-SAC比市售Pt / C表现出更有希望的ORR活性。此外，基于Pt / Cu-SAC的燃料电池具有0.025 mg cm –2的阴极Pt负载，其峰值功率密度为526 mW cm –2，这与市售Pt / C阴极负载Pt / C为0.1 mg cm –2所获得的非常相似。Pt / Cu-SAC为设计用于聚合物电解质膜燃料电池的低Pt阴极催化剂铺平了道路。
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