Nano Research

, Volume 8, Issue 9, pp 2901–2912 | Cite as

A new C=C embedded porphyrin sheet with superior oxygen reduction performance

  • Yawei Li
  • Shunhong Zhang
  • Jiabing Yu
  • Qian Wang
  • Qiang SunEmail author
  • Puru Jena
Research Article


C2 is a well-known pseudo-oxygen unit with an electron affinity of 3.4 eV. We show that it can exhibit metal-ion like behavior when embedded in a porphyrin sheet and form a metal-free two-dimensional material with superior oxygen reduction performance. Here, the positively charged C=C units are highly active for oxygen reduction reaction (ORR) via dissociation pathways with a small energy barrier of 0.09 eV, much smaller than that of other non-platinum group metal (non-PGM) ORR catalysts. Using a microkinetics-based model, we calculated the partial current density to be 3.0 mA/cm2 at 0.65 V vs. a standard hydrogen electrode (SHE), which is comparable to that of the state-of-the-art Pt/C catalyst. We further confirm that the C=C embedded porphyrin sheet is dynamically and thermally stable with a quasi-direct band gap of 1.14 eV. The superior catalytic performance and geometric stability make the metal-free C=C porphyrin sheet ideal for fuel cell applications.


oxygen reduction reaction C=C porphyrin sheet density functional theory microkinetics modeling metal-free electrocatalysis 


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Copyright information

© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  • Yawei Li
    • 1
  • Shunhong Zhang
    • 2
  • Jiabing Yu
    • 1
  • Qian Wang
    • 2
  • Qiang Sun
    • 1
    • 2
    • 3
    Email author
  • Puru Jena
    • 3
  1. 1.Department of Materials Science and EngineeringPeking UniversityBeijingChina
  2. 2.Center for Applied Physics and TechnologyPeking UniversityBeijingChina
  3. 3.Department of PhysicsVirginia Commonwealth UniversityRichmondUSA

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