Ishita Goyal, Nishithan C. Kani, Samuel A. Olusegun, Sreenivasulu Chinnabattigalla, Rajan R. Bhawnani, Ksenija D. Glusac, Aayush R. Singh, Joseph A. Gauthier, Meenesh R. Singh
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引用次数: 0
Abstract
The Haber-Bosch process has a massive carbon footprint, and it is highly desired to decentralize NH3 synthesis in a more sustainable manner. Li-mediated NH3 electrosynthesis is a promising approach to making NH3 under ambient conditions, but it suffers from poor energy efficiency owing to the highly reducing electroplating potential of Li. In this Letter, we report a combined theoretical and experimental investigation into other mediators beyond Li, such as Ca, Mg, Sr, Y, and V. The density functional theory results suggest that, besides Li, Ca and Mg can also activate N2 at room temperature and have a stable surface nitride vacancy necessary for NH3 synthesis. NH3 faradaic efficiencies of 50% ± 0.2% and 27% ± 2% are obtained from Ca and Mg, respectively, at an applied current density of 15 mA/cm2. This Letter serves as a proof-of-concept for Li-free NH3 synthesis and will motivate further research in metal-nitride-mediated processes.
ACS Energy Letters Energy-Renewable Energy, Sustainability and the Environment
CiteScore
31.20
自引率
5.00%
发文量
469
审稿时长
1 months
期刊介绍:
ACS Energy Letters is a monthly journal that publishes papers reporting new scientific advances in energy research. The journal focuses on topics that are of interest to scientists working in the fundamental and applied sciences. Rapid publication is a central criterion for acceptance, and the journal is known for its quick publication times, with an average of 4-6 weeks from submission to web publication in As Soon As Publishable format.
ACS Energy Letters is ranked as the number one journal in the Web of Science Electrochemistry category. It also ranks within the top 10 journals for Physical Chemistry, Energy & Fuels, and Nanoscience & Nanotechnology.
The journal offers several types of articles, including Letters, Energy Express, Perspectives, Reviews, Editorials, Viewpoints and Energy Focus. Additionally, authors have the option to submit videos that summarize or support the information presented in a Perspective or Review article, which can be highlighted on the journal's website. ACS Energy Letters is abstracted and indexed in Chemical Abstracts Service/SciFinder, EBSCO-summon, PubMed, Web of Science, Scopus and Portico.