Metal-embedded reduced graphene oxide fibers and multi-sensors comprising thereof

• Main Authors: CHO YUN JAE, KIM HYUN JIN, LIM TAE KYUNG, KIM YOUN SANG, KIM HYUK JOON, PARK SANG YOON, JU SANG HYUN, SHIN MIN KYOON, YEO CHANG SU, YOO JEE YOUNG, CHO KANG RAE, CHO SANG HUN
• Format: Patent
• Language: English; Korean
• Published: 01.10.2019
• Subjects: APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS; CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS; MEASURING; MEASURING QUANTITY OF HEAT; MEASURING TEMPERATURE; MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OFARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES ORRIBBONS; NATURAL OR ARTIFICIAL THREADS OR FIBRES; PHYSICS; SPINNING; TESTING; TEXTILES; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR

The present invention provides a method for manufacturing a graphene fiber containing metal nanoparticles, which comprises the steps of: a) forming a gel fiber by wet-spinning graphene oxide dispersion into a coagulation bath containing a metal ion selected from a group consisting of copper (Cu) ions, silver (Ag) ions, gold (Au) ions, and aluminum (Al) ions; b) drying the formed gel fiber to manufacture a graphene oxide fiber containing metal oxides; and c) treating the dried gel fiber with a chemical reducing agent to reduce metal oxides and graphene oxides. The manufactured graphene fiber can be usefully used for gas detection and/or temperature detection sensors. 본 발명은 a) 그래핀산화물 분산액을 구리(Cu) 이온, 은(Ag) 이온, 금(Au) 이온, 알루미늄(Al) 이온으로 이루어진 군에서 선택되는 금속 이온을 포함하는 응고욕에 습식 방사시켜 겔 섬유를 형성하는 단계; b) 상기 형성된 겔 섬유를 건조시켜 금속산화물이 함유된 그래핀산화물 섬유를 제조하는 단계; 및 c) 상기 건조된 겔 섬유를 화학적 환원제로 처리하여 금속산화물 및 그래핀산화물을 환원시키는 단계를 포함하는, 금속 나노입자가 함유된 그래핀 섬유의 제조 방법을 제공하며, 상기 제조된 그래핀 섬유는 기체 감지 및/또는 온도 감지 센서에 유용하게 이용될 수 있다.