We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Highly Efficient, Selective, and Stable CO<sub>2</sub> Electroreduction on a Hexagonal Zn Catalyst.
- Authors
Won, Da Hye; Shin, Hyeyoung; Koh, Jaekang; Chung, Jaehoon; Lee, Hee Sang; Kim, Hyungjun; Woo, Seong Ihl
- Abstract
Electrocatalytic CO2 conversion into fuel is a prospective strategy for the sustainable energy production. However, still many parts of the catalyst such as low catalytic activity, selectivity, and stability are challenging. Herein, a hierarchical hexagonal Zn catalyst showed highly efficient and, more importantly, stable performance as an electrocatalyst for selectively producing CO. Moreover, we found that its high selectivity for CO is attributed to morphology. In electrochemical analysis, Zn (101) facet is favorable to CO formation whereas Zn (002) facet favors the H2 evolution during CO2 electrolysis. Indeed, DFT calculations showed that (101) facet lowers a reduction potential for CO2 to CO by more effectively stabilizing a .COOH intermediate than (002) facet. This further suggests that tuning the crystal structure to control (101)/(002) facet ratio of Zn can be considered as a key design principle to achieve a desirable product from Zn catalyst.
- Subjects
ELECTROLYTIC reduction; ZINC catalysts; CARBON dioxide; RENEWABLE energy sources; CRYSTAL structure
- Publication
Angewandte Chemie, 2016, Vol 128, Issue 32, p9443
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201602888