Method of fabricating graphite flakes

US8916126B1 · kind B1 · utility

Assignee

• CHUNG-SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY, ARMAMENTS BUREAU, M.N.D · TW

Inventors

• Chung-An Wang · Singapore, SG
• Chun-Han Lin · Taipei, TW
• Chuen-Ming Gee · Taoyuan, TW
• Pai-Lu Wang · Longqi, TW
• Ching-Jang Lin · Taoyuan, TW
• Chia-Wei Liao · Zhubei City, TW

Key dates

• Filing date: Dec 18, 2013
• Grant date: Dec 23, 2014
• Expiry date: Dec 18, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01B32/205
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

In a method of fabricating graphite flakes applied in a graphite nanomaterial, mesophase pitch and an organic solvent are used to produce a carbon precursor slurry, and the carbon precursor slurry is coated by a scraper to produce the graphite flakes. Since the method of using natural graphite as a raw material in production requires a number of purification processes to manufacture an expanded graphite powder before the graphite flakes can be produced, and thus the fabricating cost is very high, and other high-priced materials such as polyimide (PI) or graphene also will increase the total cost.