| 학회 |
한국화학공학회 |
| 학술대회 |
2022년 봄 (04/20 ~ 04/23, 제주국제컨벤션센터) |
| 권호 |
28권 1호, p.669 |
| 발표분야 |
[주제 9] 에너지 전환 |
| 제목 |
Preparation of bimetallic borides with enriched grain boundaries for improved hydrogen evolution reaction |
| 초록 |
Grain boundaries can cause strained regions in a catalyst's nanostructure, resulting in highly active surfaces with optimal electronic structures for catalysis. Although studies on grain boundaries for catalysis have been published, constructing nanostructures with rich grain boundaries and revealing their function mechanisms remains a challenge. We report a simple method for making bimetallic borides Ni3B/MoB nanosheets with abundant grain boundaries, as well as the effect of grain boundaries on hydrogen evolution reaction electrocatalytic activity (HER). The synthesized Ni3B/MoB has multiple grain boundaries and optimum shape, according to experimental data and theoretical calculations. The electronic states at the grain boundary were also modified, and ΔGH* was optimized. In both acidic and alkaline environments, this resulted in highly intrinsic catalytic activity for HER. This study adds to our understanding of how transition metal borides and functional materials enhanced grain boundaries for catalysis are synthesized and regulated. |
| 저자 |
우동윤1, Huang Huawei2, 이진우1
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| 소속 |
1한국과학기술원, 2KAIST |
| 키워드 |
에너지 환경(Energy and Environment) |
| E-Mail |
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| 원문파일 |
초록 보기 |
