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Voronoi‐Tessellated Graphite Produced by Low‐Temperature Catalytic Graphitization from Renewable Resources
Author(s) -
Zhao Leyi,
Zhao Xiuyun,
Burke Luke T.,
Bennett J. Craig,
Dunlap Richard A.,
Obrovac Mark N.
Publication year - 2017
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201701211
Subject(s) - graphite , materials science , carbon fibers , voronoi diagram , particle (ecology) , chemical engineering , perpendicular , composite material , composite number , geometry , geology , oceanography , mathematics , engineering
A highly crystalline graphite powder was prepared from the low temperature (800–1000 °C) graphitization of renewable hard carbon precursors using a magnesium catalyst. The resulting graphite particles are composed of Voronoi‐tessellated regions comprising irregular sheets; each Voronoi‐tessellated region having a small “seed” particle located near their centroid on the surface. This suggests nucleated outward growth of graphitic carbon, which has not been previously observed. Each seed particle consists of a spheroidal graphite shell on the inside of which hexagonal graphite platelets are perpendicularly affixed. This results in a unique high surface area graphite with a high degree of graphitization that is made with renewable feedstocks at temperatures far below that conventionally used for artificial graphites.