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A High‐Performance Carbon for Supercapacitors Obtained by Carbonization of a Seaweed Biopolymer
Author(s) -
RaymundoPiñero E.,
Leroux F.,
Béguin F.
Publication year - 2006
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200501905
Subject(s) - supercapacitor , carbonization , biopolymer , materials science , carbon fibers , activated carbon , porosity , chemical engineering , capacitance , nanotechnology , composite material , adsorption , organic chemistry , electrode , polymer , scanning electron microscope , chemistry , composite number , engineering
An oxygen‐rich carbon for supercapacitors has been obtained by one‐step carbonization of a natural biopolymer from seaweeds, e.g., sodium alginate. Although the specific surface area of this carbon is very low, it gives a capacitance comparable to the best activated carbons available. Due to its low porosity (see figure), this material has high density and good electrical conductivity, also advantageous for supercapacitor applications.