| 학회 |
한국화학공학회 |
| 학술대회 |
2019년 봄 (04/24 ~ 04/26, 제주국제컨벤션센터) |
| 권호 |
25권 1호, p.788 |
| 발표분야 |
재료(Materials) |
| 제목 |
B-doped graphene quantum dots and graphene hydrogel composites for Zn-air battery and water electrolysis |
| 초록 |
Herein, a facile one-step hydrothermal route has been demonstrated to synthesis the novel all carbon based composites (GH-BGQD) of boron-doped graphene quantum dots (B-GQDs) anchored on graphene hydrogel (GH).The obtained GH-BGQD has the unique 3D architecture with high porosity and large specific surface area, possessingthe abundant catalytic active centers of B-GQDs and the enhanced mass transport of electrolyte and ion diffusion by highly conductive 3D structured GH. The GH-BGQD compositesexhibit a superior trifunctional electrocatalytic activity toward oxygen reduction reaction (ORR), oxygen evolution reaction (OER) and hydrogen evolution reaction (HER)with an excellent long-term stability and durability, which is comparable to the commercial Pt/C and Ir/C catalyst. Based on excellent trifunctional electrocatalytic activities, the Zn-air battery and water electrolysis fabricated with GH-BGQD exhibit an efficient and durable performance. This work provides a new strategy of designing an efficient carbon based multifunctional electrocatalyst for the electrochemical energy devices. |
| 저자 |
Huang Haiji1, Tran Van Tam2, 최원묵2
|
| 소속 |
1Univ. of Ulsan, 2울산대 |
| 키워드 |
재료 |
| E-Mail |
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| 원문파일 |
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