当前位置: X-MOL 学术ChemSusChem › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Ambient Ammonia Electrosynthesis: Current Status, Challenges, and Perspectives.
ChemSusChem ( IF 7.5 ) Pub Date : 2020-03-23 , DOI: 10.1002/cssc.202000670
Xian-Wei Lv 1 , Chen-Chen Weng 1 , Zhong-Yong Yuan 1
Affiliation  

Ammonia (NH3) electrosynthesis from atmospheric nitrogen (N2) and water is emerging as a promising alternative to the energy‐intensive Haber–Bosch process; however, such a process is difficult to perform due to the inherent inertness of N2 molecules together with low solubility in aqueous solutions. Although many active electrocatalysts have been used to electrocatalyze the N2 reduction reaction (NRR), unsatisfactory NH3 yields and lower Faraday efficiency are still far from practical industrial production, and thus, considerable research efforts are being devoted to address these problems. Nevertheless, most reports still mainly focus on the preparation of electrocatalysts and largely ignore a summary of optimization–modification strategies for the NRR. In this review, a general introduction to the NRR mechanism is presented to provide a reasonable guide for the design of highly active catalysts. Then, four categories of NRR electrocatalysts, according to chemical compositions, are surveyed, as well as several strategies for promoting the catalytic activity and efficiency. Later, strategies for developing efficient N2 fixation systems are discussed. Finally, current challenges and future perspectives in the context of the NRR are highlighted. This review sheds some light on the development of highly efficient catalytic systems for NH3 synthesis and stimulates research interests in the unexplored, but promising, research field of the NRR.

中文翻译:

环境氨电合成:现状,挑战和前景。

由大气中的氮(N 2)和水进行氨(NH 3)电合成正在成为能源密集的Haber-Bosch工艺的有前途的替代方法。但是,由于N 2分子固有的惰性以及在水溶液中的低溶解度,因此难以进行这样的处理。尽管已使用许多活性电催化剂来电催化N 2还原反应(NRR),但NH 3不能令人满意收率和法拉第效率的降低还远远没有达到实际的工业生产水平,因此,人们致力于解决这些问题的大量研究工作。但是,大多数报告仍主要集中在电催化剂的制备上,而在很大程度上忽略了NRR优化-修饰策略的概述。在这篇综述中,介绍了NRR机制的一般介绍,以为高活性催化剂的设计提供合理的指导。然后,根据化学组成,对四种NRR电催化剂进行了调查,并提出了几种提高催化活性和效率的策略。后来,开发有效氮2的策略固定系统进行了讨论。最后,着重介绍了NRR背景下的当前挑战和未来前景。这项审查为NH 3合成的高效催化系统的发展提供了一些启示,并激发了在NRR的未探索但有希望的研究领域中的研究兴趣。
更新日期:2020-03-23
down
wechat
bug