Ruitao Lv1, Tongxiang Cui1, Mun‐Suk Jun2, Qiang Zhang3, Anyuan Cao4, Dang Sheng Su3, Zhengjun Zhang1, Seong‐Ho Yoon2, Jin Miyawaki2, Isao Mochida2, Feiyu Kang1
1Laboratory of Advanced Materials, Department of Materials Science and Engineering, Tsinghua University
2Institute for Materials Chemistry and Engineering, Kyushu University
3Inorganic Chemistry, Fritz Haber Institute, Max Planck Society
4Department of Advanced Materials and Nanotechnology,College of Engineering,Peking University
Tóm tắt
AbstractA hierarchical N‐doped carbon nanotube‐graphene hybrid nanostructure (NCNT‐GHN), in which the graphene layers are distributed inside the CNT inner cavities, was designed to efficiently support noble metal (e.g., PtRu) nanoparticles. Well‐dispersed PtRu nanoparticles with diameters of 2–4 nm were immobilized onto these NCNT‐GHN supports by a low‐temperature chemical reduction method without any pretreatment. Compared to conventional CNTs and commercial catalysts. a much better catalytic performance was achieved by a synergistic effect of the hierarchical structure (graphene‐CNT hybrid) and electronic modulation (N‐doping) during the methanol electrooxidation reaction. Improved single‐cell performances with long‐term stability are also demonstrated using NCNT‐GHN as catalyst support.
