Universität zu Köln

Goyal, Naina ORCID: 0009-0002-6956-7905, Dharmasigamani, Dhamotharan ORCID: 0009-0007-5435-8613, Pires, Fabio ORCID: 0000-0001-6762-2910, Kumar, Ravi ORCID: 0000-0001-6856-6092 and Mathur, Sanjay ORCID: 0000-0003-2765-2693 (2025). LiVO 3 /LiZnVO 4 Nanocomposite: High Performance Electrocatalyst for Ambient Nitrogen Reduction to Ammonia. Advanced Engineering Materials, 27 (22). pp. 1-8. Wiley. ISSN 1438-1656

PDF Adv Eng Mater - 2025 - Goyal - LiVO3 LiZnVO4 Nanocomposite High Performance Electrocatalyst for Ambient Nitrogen Reduction.pdf Bereitstellung unter der CC-Lizenz: Creative Commons Attribution. Download (1MB)

Abstract

[Artikel-Nr.: e202501627] The electrocatalytic nitrogen reduction reaction (e‐NRR) has emerged as a sustainable alternative to the energy‐intensive Haber–Bosch process for ammonia (NH 3 ) synthesis. Lithium‐based electrocatalysts are particularly promising due to the high thermodynamic affinity of lithium toward nitrogen, which facilitates spontaneous N 2 adsorption to lower the activation energy required for dinitrogen dissociation. By promoting proton‐coupled electron transfer and stabilizing NRR intermediates, the composite catalyst enhances reaction kinetics, enabling efficient NH 3 production. While nonaqueous lithium‐containing electrolytes suppress the hydrogen evolution reaction, lithium deposition from electrolyte decomposition inhibits e‐NRR. This study addresses the challenge by structurally integrating lithium into a LiVO 3 /LiZnVO 4 nanocomposite, which channels lithium into active catalytic sites rather than parasitic plating. The oxide‐oxide nanocomposite electrocatalyst delivers an ammonia yield of 53.7 μg h −1 mg cat −1 and a Faradaic efficiency (FE) of 44.8% at −0.5 V versus reversible hydrogen electrode in 0.1 M HCl electrolyte. To the best of the knowledge, this report presents a significant improvement in FE against other reported Li‐mediated systems and rivalling transition metal‐based catalysts.

Item Type:	Article
Creators:	Creators Email ORCID ORCID Put Code Goyal, Naina UNSPECIFIED https://orcid.org/0009-0002-6956-7905 UNSPECIFIED Dharmasigamani, Dhamotharan UNSPECIFIED https://orcid.org/0009-0007-5435-8613 UNSPECIFIED Pires, Fabio UNSPECIFIED https://orcid.org/0000-0001-6762-2910 UNSPECIFIED Kumar, Ravi UNSPECIFIED https://orcid.org/0000-0001-6856-6092 UNSPECIFIED Mathur, Sanjay UNSPECIFIED https://orcid.org/0000-0003-2765-2693 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-801794
Identification Number:	10.1002/adem.202501627
Journal or Publication Title:	Advanced Engineering Materials
Volume:	27
Number:	22
Page Range:	pp. 1-8
Number of Pages:	8
Date:	10 November 2025
Publisher:	Wiley
ISSN:	1438-1656
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Chemistry > Institute of Inorganic Chemistry
Subjects:	Chemistry and allied sciences
Uncontrolled Keywords:	Keywords Language acid electrolyte ; electrochemical nitrogen reduction ; Li-based catalyst ; LiVO3 ; LiZnVO4 ; sol–gel reaction English
['eprint_fieldname_oa_funders' not defined]:	Publikationsfonds UzK
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/80179