Graphite Whiskers Derived from Waste Coffee Grounds Treated at High Temperature

Graphite whiskers (GWs) are obtained from coffee grounds (CGs) treated at 2500 °C for 1 h in the presence of Ar gas at 1 atm. The majority of the GWs formed inside the CGs shell are rod‐like with a conical tip with diameter and length in the range between 1 to 3 µm and 4 to 10 µm, respectively. At f...

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Detalles Bibliográficos
Autores principales: Melvin, Gan Jet Hong, Wang, Zhipeng, Morimoto, Shingo, Fujishige, Masatsugu, Takeuchi, Kenji, Hashimoto, Yoshio, Endo, Morinobu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2019
Materias:
Communications
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6686167/
https://www.ncbi.nlm.nih.gov/pubmed/31565389
http://dx.doi.org/10.1002/gch2.201800107
Descripción
Sumario:Graphite whiskers (GWs) are obtained from coffee grounds (CGs) treated at 2500 °C for 1 h in the presence of Ar gas at 1 atm. The majority of the GWs formed inside the CGs shell are rod‐like with a conical tip with diameter and length in the range between 1 to 3 µm and 4 to 10 µm, respectively. At first, the carbon layer might be grown in a turbostratic manner, and then progressively graphitized at higher temperature. The strong G′ peak intensity might be induced by the disclination of graphitized carbon layers.

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