Electrochemical Synthesis of Ammonia from Water and Nitrogen: A Lithium‐Mediated Approach Using Lithium‐Ion Conducting Glass Ceramics. Issue 1 (23rd November 2017)

• Record Type: Journal Article
• Authors: Kim, Kwiyong; Lee, Seung Jong; Kim, Dong‐Yeon; Yoo, Chung‐Yul; Choi, Jang Wook; Kim, Jong‐Nam; Woo, Youngmin; Yoon, Hyung Chul; Han, Jong‐In
• Is Part Of: ChemSusChem. Volume 11:Issue 1(2018)
• Page Start: 120
• Page End: 124
• Publication Date: 2017-11-23
• Subjects: ammonia -- faradic efficiency -- lithium -- lithium nitrides -- nitrogen fixation; Green chemistry -- Periodicals; Sustainable engineering -- Periodicals; Chemistry -- Periodicals; Chemical engineering -- Periodicals; 660
• DOI: 10.1002/cssc.201701975
• Languages: English
• ISSNs: 1864-5631

Abstract

Abstract: Lithium‐mediated reduction of dinitrogen is a promising method to evade electron‐stealing hydrogen evolution, a critical challenge which limits faradaic efficiency (FE) and thus hinders the success of traditional protic‐solvent‐based ammonia electro‐synthesis. A viable implementation of the lithium‐mediated pathway using lithium‐ion conducting glass ceramics involves i) lithium deposition, ii) nitridation, and iii) ammonia formation. Ammonia was successfully synthesized from molecular nitrogen and water, yielding a maximum FE of 52.3 %. With an ammonia synthesis rate comparable to previously reported approaches, the fairly high FE demonstrates the possibility of using this nitrogen fixation strategy as a substitute for firmly established, yet exceedingly complicated and expensive technology, and in so doing represents a next‐generation energy storage system. Abstract : The fix is N : The strong reducing power of lithium allows facile dinitrogen dissociation to be used in an ammonia electro‐synthesis process with extraordinary faradaic efficiency. This straightforward three‐step process represents a promising nitrogen cycle for next‐generation energy storage systems.