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Ionic Liquid Originated Synthesis of N,P‐doped Graphene for Hydrogen Evolution Reaction
Author(s) -
Li Tianhao,
Tang Daomei,
Wang Min,
Song Qunliang,
Li Chang Ming
Publication year - 2018
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201801439
Subject(s) - overpotential , tafel equation , ionic liquid , electrocatalyst , catalysis , graphene , materials science , faraday efficiency , dopant , inorganic chemistry , electrolysis , electrolysis of water , chemical engineering , hydrogen , oxygen evolution , chemistry , doping , electrochemistry , nanotechnology , organic chemistry , electrode , optoelectronics , engineering , electrolyte
Water electrolysis, generating clean hydrogen, always requires high‐performance and low‐cost electrocatalysts. Ionic liquid, namely N,N ‐bis(4‐(methoxycarbonyl)benzyl)‐ N ‐methyl‐d‐glucaminium hexaflorophosphate (MBMG‐PF 6 ), was infiltrated into the pretreated graphene as the precursor to prepare N,P‐double doped graphene (G (PF6) ). This material has been applied as a metal‐free electrocatalyst for hydrogen evolution reaction (HER), demonstrating a good catalytic activity with an onset overpotential of 100 mV, a Tafel slope of 88 mV dec −1 , a 97% Faradaic efficiency (FE) and a good durability over 10 h. According to the structural and compositional studies, this good HER performance can be attributed to the N,P‐dopant and highly porous structure of this catalyst.