Yuying Meng

Conflicts of Interest The authors declare no conflicts of interest. Data Availability Statement The data that support the findings of this study are available on request from the corresponding author. The data are not publicly available due to privacy or ethical restrictions.

1 Introduction Owing to the high energy density and zero greenhouse gas emission, hydrogen has been considered as the most attractive energy candidate to relieve the growing environmental issues and energy crisis caused by the excessive usage of traditional fossil fuels [1-4].

Effect of crystal defects on the selectivity of a bulk Cu-Zn alloy for electrocatalytic CO2 reduction The elemental composition and crystal structure of catalysts are important factors affecting the product selectivity in electrochemical CO₂ reduction reaction (CO₂RR). It remains challenging to tune the product selectivity by precisely regulating crystal defects such as grain boundaries and dislocations of the catalysts.