| 학회 | 한국공업화학회 |
| 학술대회 | 2022년 봄 (05/11 ~ 05/13, 제주국제컨벤션센터(ICC JEJU)) |
| 권호 | 26권 1호 |
| 발표분야 | 포스터-무기재료 |
| 제목 | Design Control of Amorphous CoMoPx with Ample Active Sites for Effective Water Splitting |
| 초록 | In this work, we present the structuraldesign principle for synthesis of amorphous bimetallic phosphides (a-CoMoPx/CF)capable of effectively catalyzing water splitting. Porous Co-MOF/CF and defectiveCoMoO4/CF are used as template materials to produce a large numberof defects and voids. Theoretical calculations confirm a synergistic catalyticmechanism between bimetallic components. Nanosheet arrays with hierarchicalstructure have high ratios of exposed atoms, resulting in an increasedelectrochemical active surface area. As a result of the structural advantagesof the bimetallic components and their synergistic catalytic effect, a-CoMoPx/CFshowed low HER overpotential of 59 mV to reach 10 mA cm-2 at 1M KOH.Using a-CoMoPx/CF as both cathode and anode, the overpotential of1.581 V at 10 mA cm-2 and stable operation at 100 mA cm-2for more than 100 h were achieved, comparable to that of noble metal-basedcatalysts (Pt/C-CF||RuO2-CF). |
| 저자 | 전현우, 이진우 |
| 소속 | KAIST |
| 키워드 | hydrogen evolution reaction; water splitting; bimetallic phosphide; amorphous |
