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Condiment‐Derived 3D Architecture Porous Carbon for Electrochemical Supercapacitors
Author(s) -
Qian Wenjing,
Zhu Jingyue,
Zhang Ye,
Wu Xiao,
Yan Feng
Publication year - 2015
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201500859
Subject(s) - supercapacitor , heteroatom , carbonization , materials science , electrochemistry , chemical engineering , carbon fibers , sodium , porosity , capacitance , mesoporous material , microporous material , nanotechnology , electrode , organic chemistry , chemistry , scanning electron microscope , composite number , composite material , alkyl , catalysis , engineering , metallurgy
The one‐step synthesis of porous carbon nanoflakes possessing a 3D texture is achieved by cooking (carbonization) a mixture containing two condiments, sodium glutamate (SG) and sodium chloride, which are commonly used in kitchens. The prepared 3D porous carbons are composed of interconnected carbon nanoflakes and possess instinct heteroatom doping such as nitrogen and oxygen, which furnishes the electrochemical activity. The combination of micropores and mesopores with 3D configurations facilitates persistent and fast ion transport and shorten diffusion pathways for high‐performance supercapacitor applications. Sodium glutamate carbonized at 800 °C exhibits high charge storage capacity with a specific capacitance of 320 F g −1 in 6 m KOH at a current density of 1 A g −1 and good stability over 10 000 cycles.