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Graphite Whiskers Derived from Waste Coffee Grounds Treated at High Temperature.


ABSTRACT: 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.

SUBMITTER: Melvin GJH 

PROVIDER: S-EPMC6686167 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature

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Graphite Whiskers Derived from Waste Coffee Grounds Treated at High Temperature.

Melvin Gan Jet Hong GJH   Wang Zhipeng Z   Morimoto Shingo S   Fujishige Masatsugu M   Takeuchi Kenji K   Hashimoto Yoshio Y   Endo Morinobu M  

Global challenges (Hoboken, NJ) 20190212 8


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 graphitiz  ...[more]

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