One‐pot synthesis of two‐dimensional porphyrin‐based polymer and derived N‐doped porous carbon as efficient oxygen reduction catalysts. (4th March 2020)

• Record Type: Journal Article
• Authors: Cui, Tian‐Lu; He, Jun‐Ying; Chen, Jian‐Jun
• Is Part Of: Micro & nano letters. Volume 15:Number 3(2020)
• Page Start: 140
• Page End: 144
• Publication Date: 2020-03-04
• Subjects: diffusion -- nitrogen -- electrochemistry -- nanoporous materials -- current density -- nanofabrication -- reduction (chemical) -- charge exchange -- carbon -- polymers -- catalysts -- iron -- porosity; C:N, Fe -- two‐dimensional porphyrin‐based polymer -- N‐doped porous carbon -- efficient oxygen reduction catalysts -- two‐dimensional porous polymer -- porphyrin‐based porous carbon nanosheets -- specific surface area -- hierarchical porous structure -- electrochemical performance -- oxygen reduction reaction -- diffusion limiting current density -- one‐pot synthesis -- condensation -- alkaline conditions -- half‐wave potential; Nanotechnology -- Periodicals; Nanostructures -- Periodicals; Microtechnology -- Periodicals; 620.5
• DOI: 10.1049/mnl.2019.0407
• Languages: English
• ISSNs: 1750-0443

Abstract

Abstract : 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 .