| 학회 |
한국화학공학회 |
| 학술대회 |
2021년 가을 (10/27 ~ 10/29, 광주 김대중컨벤션센터) |
| 권호 |
27권 2호, p.1273 |
| 발표분야 |
[주제별 심포지엄] 재료부문위원회 설립 31주년 기념 심포지엄: Frontiers in Materials |
| 제목 |
A Highly Efficient Moisture-Driven Power Generator Fabricated by Laser-Induced Graphitization |
| 초록 |
We used a CO2 laser engraver to create a conductive graphitic carbon layer (GCL) directly on a porous cellulose nanofiber (CNF) substrate at ambient conditions. By focusing the laser beam on the top surface of the CNF substrate, higher conversion of the CNF to GCL was achieved on the top surface than the bottom surface. An oxygen-to-carbon ratio (O/C) gradient was established between the top and bottom surfaces during laser induced graphitization (LIG), as the O/C of the GCL decreased with laser intensity. When the GCL with the O/C gradient was exposed to water vapor, hydrolysis of the carboxyl groups in the GCL produced hydrogen ions. The resulting hydrogen ion concentration gradient between the top and bottom surfaces created electricity. The performance was significantly improved using GCLs obtained from salt rich CNFs. |
| 저자 |
전상민, 은자경
|
| 소속 |
포항공과대 |
| 키워드 |
by Laser-Induced Graphitization; CNF; GCL
|
| E-Mail |
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| 원문파일 |
초록 보기 |
