| 학회 |
한국고분자학회 |
| 학술대회 |
2020년 가을 (10/05 ~ 10/08, 부산컨벤션센터(BEXCO)) |
| 권호 |
45권 1호 |
| 발표분야 |
고분자가공/복합재료 |
| 제목 |
Three-dimensional graphene/transition metal alloys from gelatin-based hydrogel for Zinc air battery |
| 초록 |
A study on stable and efficient bifunctional oxygen reduction/evolution electrocatalysts is mightily important in rechargeable Zn-air battery. In this work, we develop in-situ grown few-layers graphene-decorated transition metal alloys on nitrogen-doped carbon sheets(3DGM-NC) from anionic gelatin-based hydrogels with cationic transition metal particles for high performance Zn-air battery. This bifunctional catalyst achieves a positive half-wave potential of 0.947 V (vs reversible hydrogen electrode, RHE) for oxygen reduction reaction, and a operating potentials of 1.67 V at a 10 mA/cm2 of oxygen evolution reaction with high stability for 10 hours due to stable graphene structure and synergetic effects of transition metal alloys and nitrogen-containing functional groups. This study suggests new opportunities to develop new design and synthesis for energy conversion or storage industries. |
| 저자 |
황종하, 장지현
|
| 소속 |
울산과학기술원 |
| 키워드 |
graphene; transition metal alloy; gelatin; electrocatalyst; Zn-air battery
|
| E-Mail |
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