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A Defect‐rich N, P Co‐doped Carbon Foam as Efficient Electrocatalyst toward Oxygen Reduction Reaction
Author(s) -
Yang Maomao,
Shu Xinxin,
Zhang Jintao
Publication year - 2020
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.202000363
Subject(s) - electrocatalyst , catalysis , carbon fibers , carbon nanofoam , heteroatom , chemical engineering , cathode , materials science , oxygen , zinc , chemistry , inorganic chemistry , porosity , electrochemistry , electrode , composite number , organic chemistry , composite material , metallurgy , engineering , ring (chemistry)
Explore cost‐effective and efficient carbon‐based electrocatalysts toward oxygen reduction reaction is highly desired to replace high‐cost platinum group metal (PGM) catalysts. Herein we synthesized a N, P co‐doped carbon foam by direct blowing of glucose in the presence of phytic acid (blowing catalyst) and urea (self‐sacrificing template). This template‐free one‐step approach achieved high surface heteroatom content of N (5 at.%) and P (2.33 at.%), large surface area (1026 m 2 g −1 ) and high I D /I G ratio. It was found that the edges‐rich activated carbon scaffold as well as the active N‐sites work synthetically to guarantee its efficient ORR performance with the half‐wave potential of 0.84 V RHE . Besides, the well‐balanced porous structure facilitates its practical application as an air cathode in zinc‐air cell, reaching power density of 145 mW cm −2 at the current density of 169 mA cm −2 .