DOI: 10.1126/science.1249061 ISSN:

Highly Crystalline Multimetallic Nanoframes with Three-Dimensional Electrocatalytic Surfaces

Chen Chen, Yijin Kang, Ziyang Huo, Zhongwei Zhu, Wenyu Huang, Huolin L. Xin, Joshua D. Snyder, Dongguo Li, Jeffrey A. Herron, Manos Mavrikakis, Miaofang Chi, Karren L. More, Yadong Li, Nenad M. Markovic, Gabor A. Somorjai, Peidong Yang, Vojislav R. Stamenkovic
  • Multidisciplinary
Show PDF Cite

Giving Electrocatalysts an Edge

Platinum (Pt) is an excellent catalyst for the oxygen-reduction reaction (ORR) in fuel cells and electrolyzers, but it is too expensive and scarce for widespread deployment, even when dispersed as Pt nanoparticles on carbon electrode supports (Pt/C). Alternatively, Chen et al. (p. 1339 , published online 27 February; see the Perspective by Greer ) made highly active ORR catalysts by dissolving away the interior of rhombic dodecahedral PtNi 3 nanocrystals to leave Pt-rich Pt 3 Ni edges. These nanoframe catalysts are durable—remaining active after 10,000 rounds of voltage cycling—and are far more active than Pt/C.

More from our Archive