Chemistry - A European Journal
Chemistry - A European Journal
5 years ago

Electrochemical Graphitization: An Efficient Conversion of Amorphous Carbons to Nanostructured Graphites

Electrochemical Graphitization: An Efficient Conversion of Amorphous Carbons to Nanostructured Graphites
Sheng Dai, Xianbo Jin, Rui He
This concept paper describes a new electrochemical method for the graphitization of amorphous carbons. The graphitization is achieved by a simple cathodic polarization of the carbons at merely ≈1100 K in molten CaCl2. This electrochemical process is applicable to both graphitizable and non-graphitizable carbons, generating porous graphitic structures of high-crystallinity nanosheets. The transformation of carbon blacks, microspheres, and fibers to porous graphites, hollow graphite spheres, and pipes with porous shells have been demonstrated and the potential graphitization mechanism discussed. A cathodic polarization in molten calcium chloride facilitates the conversion of various amorphous carbons to nanostructured graphite (see scheme) with high crystallinity at merely about 1100 K.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/chem.201701620

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