Journal Article

PUBDB-2024-01989

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Balancing dynamic evolution of active sites for urea oxidation in practical scenarios

Zhang, J. ; Zhu, J. ; Kang, L.Extern* ; Zhang, Q.Extern* ; Liu, L. ; Guo, F. ; Li, K. ; Feng, J. ; Xia, L. ; Lv, L. ; Zong, W. ; Shearing, P. R. ; Brett, D. J. L. ; Parkin, I. P. ; Song, X. (Corresponding author) ; Mai, L. (Corresponding author) ; He, G. (Corresponding author)

2023
RSC Publ. Cambridge

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Please use a persistent id in citations: doi:10.1039/D3EE03258B  doi:10.3204/PUBDB-2024-01989

Abstract: Electrochemical urea splitting provides a sustainable and environmentally benign route for facilitating energy conversion. Nonetheless, the sustained efficiency of urea splitting is impeded by a scarcity of active sites during extended operational periods. Herein, an atomic heterostructure engineering strategy is proposed to promote the generation of active species via synthesizing unique Ru–O$_4$ coordinated single atom catalysts anchored on Ni hydroxide (Ru$_1$–Ni(OH)$_2$), with ultralow Ru loading mass of 40.6 μg cm$^{−2}$ on the nickel foam for commercial feasibility. Leveraging in situ spectroscopic characterizations, the structure-performance relationship in low and high urea concentrations was investigated and exhibited extensive universality. The boosted generation of dynamic Ni$^{3+}$ active sites ensures outstanding activity and prominent long-term durability tests in various practical scenarios, including 100 h Zn–urea–air battery operation, 100 h alkaline urine electrolysis, and over 400 h stable hydrogen production in membrane electrode assembly (MEA) system under industrial-level current density.

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)

Research Program(s):

1. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)

Experiment(s):

1. PETRA Beamline P65 (PETRA III)

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Agriculture, Biology and Environmental Sciences ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; Essential Science Indicators ; IF >= 30 ; JCR ; National-Konsortium ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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