| 학회 |
한국화학공학회 |
| 학술대회 |
2020년 가을 (10/14 ~ 10/16, e-컨퍼런스) |
| 권호 |
26권 1호, p.749 |
| 발표분야 |
재료 |
| 제목 |
Electicity Generation from Water Droplet Infiltration in Graphene Oxide Film |
| 초록 |
Generating electicity by using a monolayer graphene sheet through the interaction with water has been recently observed, but there still remains a challenge in terms of lowering the cost with a more stable material as well as defining the underlying mechanism. In this study, we used a type of free standing reduced graphene oxide film fabricated by utilizing parafilm as a sacrificial subtrate. The method involves drop casting of graphene oxide on a paraffin film and peeling off after swelling the film with toluene to obtain free standing, graphene oxide film. The voltage was generated by absroption of an ionic solution droplet over this reduced graphene oxide film and the ionic type, concentration, and pH were examined to elucidate the origin of electricity generation. With only a small amount of droplet water, we manged to generate electricity that lasts for a long time. Moreover, nitrogen-doped reduced graphene oxide film was fabricated via a facile hydrothermal approach with doping reaction at the interface of reduced graphene oxide and ammonia vapor. The inversion of surface charge is to be achieved and propose desired performance and application. |
| 저자 |
조용현, 윤선근, 김호정, 이원형, 한정협, 김연상
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| 소속 |
서울대 |
| 키워드 |
화공재료 |
| E-Mail |
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| 원문파일 |
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