TY  - JOUR
AU  - Wang, Fuzhou
AU  - Xiang, Jiaqi
AU  - Zhang, Guike
AU  - Chen, Kai
AU  - Chu, Ke
PY  - 2024
TI  - Single-atom Co alloyed Ru for electrocatalytic nitrite reduction to ammonia
JO  - Nano Research
SN  - 1998-0124
SP  - 3660
EP  - 3666
VL  - 17
IS  - 5
AB  - Electrochemical converting NO2− into NH3 (NO2RR) holds an enormous prospect to attain efficient NH3 electrosynthesis and polluted NO2− mitigation. Herein, we report single-atom Co alloyed Ru (Co1Ru) as an efficient and durable NO2RR catalyst. Extensive experimental and theoretical investigations reveal that single-atom Co alloying of Ru enables the construction of Co1-Ru heteronuclear active sites to synergistically promote NO2− activation/hydrogenation while suppressing the competitive H2 evolution, rendering the greatly enhanced activity and selectivity of Co1Ru towards the NO2RR. Consequently, Co1Ru assembled within a flow cell exhibits an impressive NH3 yield rate of 2379.2 μmol·h−1·cm−2 with an NH3-Faradaic efficiency of 92% at a high current density of 415.9 mA·cm−2, which is among the highest NO2RR performances reported to date.
UR  - https://doi.org/10.1007/s12274-023-6261-2
DO  - 10.1007/s12274-023-6261-2