Journal Article

PUBDB-2025-01932

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Cation‐Site Disordered Cu$_3$PdN Nanoparticles for Hydrogen Evolution Electrocatalysis

Harouna-Mayer, S. Y.Extern* ; Kopula Kesavan, J. (Corresponding author)Extern*XFEL.EU* ; Caddeo, F.Extern* ; Belgardt, L.Extern* ; Hsu, C.-S.Extern*XFEL.EU* ; Klemeyer, L.Extern*DESY* ; Kipping, L. ; Akcaalan, M. G. ; Groene, T. R. L.Extern* ; Köppen, A. ; Noei, H.DESY* ; Mathon, O.Extern*XFEL.EU* ; Dippel, A.-C.DESY* ; Koziej, D. (Corresponding author)Extern*

2025
Wiley-VCH Weinheim

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Please use a persistent id in citations: doi:10.1002/smll.202506838  doi:10.3204/PUBDB-2025-01932

Abstract: Transition metal nitrides (TMNs) are emerging as a promising class of materials for application in optoelectronics as well as energy conversion and storage, but they remain rather unexplored, mainly due to a lack of mechanistic understanding of their synthetic pathways. Here, a one-pot synthesis is demonstrated, which yields 3 nm phase-pure Cu$_3$PdN nanoparticles after the reaction of Cu methoxide and Pd acetylacetonate in benzylamine for 5 min at 140 °C. The structure of the initial complexes and their conversion to Cu$_3$PdN are revealed by in situ X-ray absorption spectroscopy measurements and elucidate nucleation and growth of the nitride nanocrystals by in situ total X-ray scattering measurements. Interestingly, extended X-ray absorption fine structure double-edge refinement reveals the presence of short-range cation-site disorder in the anti-perovskite structure of Cu3PdN, which has not been observed before in the Cu3PdN system. Additionally, the synthesized Cu3PdN nanoparticles are tested for the electrocatalytic hydrogen evolution reaction, revealing an overpotential as low as $η_{10}$ = 212 ± 11 mV measured at 10 mA cm$^{−2}$.

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)
2. Nanolab (FS-NL)
3. Experimentebetreuung PETRA III (FS-PET-D)

Research Program(s):

1. 632 - Materials – Quantum, Complex and Functional Materials (POF4-632) (POF4-632)
2. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
3. FS-Proposal: I-20210998 (I-20210998) (I-20210998)
4. FS-Proposal: I-20230658 (I-20230658) (I-20230658)
5. AIM, DFG project G:(GEPRIS)390715994 - EXC 2056: CUI: Advanced Imaging of Matter (390715994) (390715994)
6. LINCHPIN - A platform to LINk between CHemistry and PhysIcs of colloidal Nanomaterials (818941) (818941)

Experiment(s):

1. PETRA Beamline P21.1 (PETRA III)
2. PETRA Beamline P64 (PETRA III)
3. DESY NanoLab: Surface Spectroscopy

Appears in the scientific report 2025

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; DEAL Wiley ; Essential Science Indicators ; IF >= 10 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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