Composition tunable ternary Pt-Ni-Co octahedra for optimized oxygen reduction activity

Zipeng Zhao; Miao Feng; Jihan Zhou; Zeyan Liu; Mufan Li; Zheng Fan; Oshton Tsen; Jianwei Miao; Xiangfeng Duan; Yu Huang

doi:10.1039/c6cc06165f

Composition tunable ternary Pt-Ni-Co octahedra for optimized oxygen reduction activity

Chem Commun (Camb). 2016 Sep 13;52(75):11215-11218. doi: 10.1039/c6cc06165f.

Authors

Zipeng Zhao¹, Miao Feng², Jihan Zhou³, Zeyan Liu¹, Mufan Li⁴, Zheng Fan¹, Oshton Tsen¹, Jianwei Miao⁵, Xiangfeng Duan⁶, Yu Huang⁷

Affiliations

¹ Department of Materials Science and Engineering, University of California, Los Angeles, California 90095, USA. yhuang@seas.ucla.edu.
² Department of Materials Science and Engineering, University of California, Los Angeles, California 90095, USA. yhuang@seas.ucla.edu and College of Materials Science and Engineering, Fuzhou University, Fuzhou, Fujian 350116, China.
³ Department of Physics and Astronomy, University of California, Los Angeles, California 90095, USA.
⁴ Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, USA.
⁵ Department of Physics and Astronomy, University of California, Los Angeles, California 90095, USA and California Nanosystems Institute, University of California, Los Angeles, California 90095, USA.
⁶ California Nanosystems Institute, University of California, Los Angeles, California 90095, USA and Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, USA.
⁷ Department of Materials Science and Engineering, University of California, Los Angeles, California 90095, USA. yhuang@seas.ucla.edu and California Nanosystems Institute, University of California, Los Angeles, California 90095, USA.

PMID: 27722573
DOI: 10.1039/c6cc06165f

Abstract

Herein, we report a one-step synthesis method for octahedral Pt-Ni-Co ternary catalysts with tunable compositions and fixed shapes. Impressively, the composition optimized octahedral PtNi_0.55Co_0.1/C demonstrated a significant improvement in ORR activity compared to those of previously reported Pt-Ni-Co alloy octahedra, showing an outstanding specific activity of 5.05 mA cm^-2 and a mass activity of 2.80 mA μg_Pt^-1, which are around 20.2 times and 14.7 times higher than those of the commercial Pt/C catalyst (0.25 mA cm^-2 and 0.19 mA μg_Pt^-1).