Suppressing hydrogen evolution in N<sub>2</sub> reduction by heteroatom doped graphene
발표자
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초록
내용
Ammonia is a significant chemical, playing a vital role in the chemical and hydrogen storage industries. Most ammonia is synthesized through the Haber-Bosch process, which, however, consumes enormous amounts of energy and emits greenhouse gases. Therefore, a sustainable and eco-friendly alternative is highly needed.
The electrochemical nitrogen reduction reaction (eNRR) has emerged as a potential method for producing ammonia under ambient conditions. Despite its promise, eNRR is still difficult to commercialize due to its low Faradaic efficiency (FE) for nitrogen reduction. The primary reason for the low NRR FE is the competitive hydrogen evolution reaction (HER). Thus, suppressing HER is crucial for enhancing NRR performance. In this study, we introduced heteroatom-doped graphene layers to suppress HER and improve NRR. The heteroatom-doped graphene effectively restricts hydrogen sources, thereby suppressing HER and enhancing NRR performance.