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Tuning Pt-skin to Ni-rich surface of Pt3Ni catalysts supported on porous carbon for enhanced oxygen reduction reaction and formic electro-oxidation

Journal Article


Abstract


  • Controlling surface composition of bimetallic catalysts is of significance in energy conversion and storage. Here, we controlled thermal treatment to synthesize different surface composition of bimetallic catalysts with average diameter <4nm. We report the synthesis of Pt3Ni catalyst with Pt-skin surface directly supported on porous graphitic carbon (PC), which showed over 300% increase in mass activity compared with Pt/C for the oxygen reduction reaction (ORR). The high activity and stability are attributed to the Pt-skin structure and the morphology of PC. When we tuned the surface composition to Ni-rich, it showed 300% increase in mass activity when compared with Pt/C towards oxidizing of HCOOH. Our approach to control surface composition can be used to design nanocatalysts for different reaction and are simple, effective and promotional to be industrialized.

UOW Authors


  •   Zhang, Binwei (external author)

Publication Date


  • 2016

Citation


  • Zhang, B. W., Zhang, Z. C., Liao, H. G., Gong, Y., Gu, L., Qu, X. M., . . . Sun, S. G. (2016). Tuning Pt-skin to Ni-rich surface of Pt3Ni catalysts supported on porous carbon for enhanced oxygen reduction reaction and formic electro-oxidation. Nano Energy, 19, 198-209. doi:10.1016/j.nanoen.2015.10.022

Scopus Eid


  • 2-s2.0-84949202544

Start Page


  • 198

End Page


  • 209

Volume


  • 19

Issue


Place Of Publication


Abstract


  • Controlling surface composition of bimetallic catalysts is of significance in energy conversion and storage. Here, we controlled thermal treatment to synthesize different surface composition of bimetallic catalysts with average diameter <4nm. We report the synthesis of Pt3Ni catalyst with Pt-skin surface directly supported on porous graphitic carbon (PC), which showed over 300% increase in mass activity compared with Pt/C for the oxygen reduction reaction (ORR). The high activity and stability are attributed to the Pt-skin structure and the morphology of PC. When we tuned the surface composition to Ni-rich, it showed 300% increase in mass activity when compared with Pt/C towards oxidizing of HCOOH. Our approach to control surface composition can be used to design nanocatalysts for different reaction and are simple, effective and promotional to be industrialized.

UOW Authors


  •   Zhang, Binwei (external author)

Publication Date


  • 2016

Citation


  • Zhang, B. W., Zhang, Z. C., Liao, H. G., Gong, Y., Gu, L., Qu, X. M., . . . Sun, S. G. (2016). Tuning Pt-skin to Ni-rich surface of Pt3Ni catalysts supported on porous carbon for enhanced oxygen reduction reaction and formic electro-oxidation. Nano Energy, 19, 198-209. doi:10.1016/j.nanoen.2015.10.022

Scopus Eid


  • 2-s2.0-84949202544

Start Page


  • 198

End Page


  • 209

Volume


  • 19

Issue


Place Of Publication