Open AccessOne‐pot synthesis of two‐dimensional porphyrin‐based polymer and derived N‐doped porous carbon as efficient oxygen reduction catalysts
Author(s) -
Cui TianLu,
He JunYing,
Chen JianJun
Publication year - 2020
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2019.0407
Subject(s) - porphyrin , catalysis , porosity , oxygen reduction , carbon fibers , oxygen , oxygen reduction reaction , materials science , polymer , chemical engineering , doping , reduction (mathematics) , chemistry , inorganic chemistry , organic chemistry , electrochemistry , composite material , composite number , optoelectronics , electrode , engineering , geometry , mathematics
This work describes the synthesis and functions of a two‐dimensional porous polymer based on porphyrin. Upon condensation, coordination and treatment with high temperature, porphyrin‐based porous carbon nanosheets were obtained with the high specific surface area of 466 m 2 g −1 . Benefiting from its high surface area, co‐doping with iron/nitrogen and hierarchical porous structure, the optimised example exhibits excellent electrochemical performance for the oxygen reduction reaction under alkaline conditions with a low half‐wave potential of 0.73 V (lower than 0.78 V for Pt/C), a dominant four‐electron transfer mechanism ( n = 3.97 at 0.64 V) and a high diffusion limiting current density of 5.27 mA cm −2 .