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@ARTICLE{Yoon:627888,
author = {Yoon, Aram and Bai, Lichen and Yang, Fengli and Franco,
Federico and Zhan, Chao and Rüscher, Martina and
Timoshenko, Janis and Pratsch, Christoph and Werner, Stephan
and Jeon, Hyo Sang and Monteiro, Mariana Cecilio de Oliveira
and Chee, See Wee and Roldan Cuenya, Beatriz},
title = {{R}evealing catalyst restructuring and composition during
nitrate electroreduction through correlated operando
microscopy and spectroscopy},
journal = {Nature materials},
volume = {24},
number = {5},
issn = {1476-1122},
address = {Basingstoke},
publisher = {Nature Publishing Group},
reportid = {PUBDB-2025-01663},
pages = {762 - 769},
year = {2025},
abstract = {Electrocatalysts alter their structure and composition
during reaction, which can in turn create new
active/selective phases. Identifying these changes is
crucial for determining how morphology controls catalytic
properties but the mechanisms by which operating conditions
shape the catalyst’s working state are not yet fully
understood. In this study, we show using correlated operando
microscopy and spectroscopy that as well-defined Cu$_2$O
cubes evolve under electrochemical nitrate reduction
reaction conditions, distinct catalyst motifs are formed
depending on the applied potential and the chemical
environment. By further matching the timescales of
morphological changes observed via electrochemical liquid
cell transmission electron microscopy with time-resolved
chemical state information obtained from operando
transmission soft X-ray microscopy, hard X-ray absorption
spectroscopy and Raman spectroscopy, we reveal that Cu2O can
be kinetically stabilized alongside metallic copper for
extended durations under moderately reductive conditions due
to surface hydroxide formation. Finally, we rationalize how
the interaction between the electrolyte and the catalyst
influences the ammonia selectivity.},
cin = {FS DOOR-User},
ddc = {610},
cid = {$I:(DE-H253)FS_DOOR-User-20241023$},
pnm = {6G3 - PETRA III (DESY) (POF4-6G3) / DFG project
G:(GEPRIS)406944504 - Selektivitätskontrolle unter
Bedingungen dynamischer CO2 Elektroreduktion (406944504) /
DFG project G:(GEPRIS)390540038 - EXC 2008: Unifying Systems
in Catalysis "UniSysCat" (390540038)},
pid = {G:(DE-HGF)POF4-6G3 / G:(GEPRIS)406944504 /
G:(GEPRIS)390540038},
experiment = {EXP:(DE-H253)P-P64-20150101},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:39856413},
UT = {WOS:001404821000001},
doi = {10.1038/s41563-024-02084-8},
url = {https://bib-pubdb1.desy.de/record/627888},
}