Efficient Oxygen Reduction Catalysts of Porous Carbon Nanostructures Decorated with Transition Metal Species,Advanced Energy Materials

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Efficient Oxygen Reduction Catalysts of Porous Carbon Nanostructures Decorated with Transition Metal Species
Advanced Energy Materials ( IF 24.4 ) Pub Date : 2019-06-12 , DOI: 10.1002/aenm.201900375
Xiaoxiao Huang ₁ , Tong Shen ₁ , Teng Zhang ₁ , Hailong Qiu ₁ , Xingxing Gu ₂ , Zeeshan Ali ₁ , Yanglong Hou ₁

Affiliation

Developing substitutes of noble metal catalysts toward oxygen reduction reaction (ORR) at the cathode is of vital importance for promoting low‐temperature polymer electrolyte membrane fuel cells. Transition metal species have been one of the hot areas of interest due to their low cost, high activity, and long‐term stability. The design of porous carbon nanostructures decorated with transition metal species plays a vital role in enhancing ORR catalytic performance. Here, the recent breakthroughs in porous carbon nanostructures decorated with transition metal species (including nanoparticles and atomically dispersed supported metal) are discussed. The porous nanostructures can provide large surface area as well as abundant pore channels, leading to sufficient exposure of active sites and efficient mass transfer. These nanostructures can be synthesized by several approaches, including the templated method, the self‐templated method, the impregnation process, and so on. Furthermore, the ORR performance and the exploration of active sites are also discussed for further enhancement of the ORR catalysts. Finally, the challenges and prospects are discussed, which would push forward the development of ORR catalysts in the near future.

中文翻译：

过渡金属物种修饰的多孔碳纳米结构的高效氧还原催化剂

开发用于阴极的氧还原反应（ORR）的贵金属催化剂替代品对于促进低温聚合物电解质膜燃料电池至关重要。过渡金属由于其低成本，高活性和长期稳定性而成为人们关注的热点之一。用过渡金属物种修饰的多孔碳纳米结构的设计在增强ORR催化性能方面起着至关重要的作用。在这里，讨论了用过渡金属物种（包括纳米颗粒和原子分散的负载金属）装饰的多孔碳纳米结构的最新突破。多孔纳米结构可提供较大的表面积以及丰富的孔通道，从而导致活性位点的充分暴露和有效的质量转移。这些纳米结构可以通过几种方法合成，包括模板化方法，自模板化方法，浸渍过程等。此外，还讨论了ORR性能和活性位点的探索，以进一步增强ORR催化剂。最后，讨论了挑战和前景，这将在不久的将来推动ORR催化剂的发展。

更新日期：2020-03-19

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