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Voronoi-Tessellated Graphite Produced by Low-Temperature Catalytic Graphitization from Renewable Resources.

ChemSusChem (2017-08-02)
Leyi Zhao, Xiuyun Zhao, Luke T Burke, J Craig Bennett, Richard A Dunlap, Mark N Obrovac
ABSTRACT

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.

MATERIALS
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Brand
Product Description

Sigma-Aldrich
1-Methyl-2-pyrrolidinone, anhydrous, 99.5%