• 文献标题:   A Robust PtNi Nanoframe/N-Doped Graphene Aerogel Electrocatalyst with Both High Activity and Stability
  • 文献类型:   Article
  • 作  者:   YANG J, HUBNER R, ZHANG JW, WAN H, ZHENG YY, WANG HL, QI HY, HE LQ, LI Y, DUBALE AA, SUN YJ, LIU YT, PENG DL, MENG YZ, ZHENG ZK, ROSSMEISL J, LIU W
  • 作者关键词:  
  • 出版物名称:   ANGEWANDTE CHEMIEINTERNATIONAL EDITION
  • ISSN:   1433-7851 EI 1521-3773
  • 通讯作者地址:  
  • 被引频次:   49
  • DOI:   10.1002/anie.202015679 EA MAR 2021
  • 出版年:   2021

▎ 摘  要

Insufficient catalytic activity and stability and high cost are the barriers for Pt-based electrocatalysts in wide practical applications. Herein, a hierarchically porous PtNi nanoframe/N-doped graphene aerogel (PtNiNF-NGA) electrocatalyst with outstanding performance toward methanol oxidation reaction (MOR) in acid electrolyte has been developed via facile tert-butanol-assisted structure reconfiguration. The ensemble of high-alloying-degree-modulated electronic structure and correspondingly the optimum MOR reaction pathway, the structure superiorities of hierarchical porosity, thin edges, Pt-rich corners, and the anchoring effect of the NGA, endow the PtNiNF-NGA with both prominent electrocatalytic activity and stability. The mass and specific activity (1647 mA mg(Pt)(-1), 3.8 mA cm(-2)) of the PtNiNF-NGA are 5.8 and 7.8 times higher than those of commercial Pt/C. It exhibits exceptional stability under a 5-hour chronoamperometry test and 2200-cycle cyclic voltammetry scanning.