000256602 001__ 256602
000256602 005__ 20190619220042.0
000256602 0247_ $$2doi$$a10.1038/s41467-018-05544-3
000256602 037__ $$aARTICLE
000256602 245__ $$aPotential-induced nanoclustering of metallic catalysts during electrochemical CO2 reduction
000256602 260__ $$c2018-12-01
000256602 269__ $$a2018-12-01
000256602 336__ $$aJournal Articles
000256602 520__ $$aIn catalysis science stability is as crucial as activity and selectivity. Understanding the degradation pathways occurring during operation and developing mitigation strategies will eventually improve catalyst design, thus facilitating the translation of basic science to technological applications. Herein, we reveal the unique and general degradation mechanism of metallic nanocatalysts during electrochemical CO2 reduction, exemplified by different sized copper nanocubes. We follow their morphological evolution during operation and correlate it with the electrocatalytic performance. In contrast with the most common coalescence and dissolution/precipitation mechanisms, we find a potential-driven nanoclustering to be the predominant degradation pathway. Grand-potential density functional theory calculations confirm the role of the negative potential applied to reduce CO2 as the main driving force for the clustering. This study offers a novel outlook on future investigations of stability and degradation reaction mechanisms of nanocatalysts in electrochemical CO2 reduction and, more generally, in electroreduction reactions.
000256602 700__ $$g269166$$aHuang, Jianfeng$$0249962
000256602 700__ $$g266277$$aHörmann, Nicolas Georg$$0249852
000256602 700__ $$g191661$$aOveisi, Emad$$0242227
000256602 700__ $$aLoiudice, Anna Maria
000256602 700__ $$g279065$$aDe Gregorio, Gian Luca$$0250630
000256602 700__ $$aAndreussi, Oliviero$$0246481$$g218645
000256602 700__ $$0246415$$aMarzari, Nicola$$g210230
000256602 700__ $$0249519$$aBuonsanti, Raffaella$$g263127
000256602 773__ $$tNature Communications$$j9$$k1$$q3117
000256602 8560_ $$femad.oveisi@epfl.ch
000256602 909C0 $$pCIME$$mcecile.hebert@epfl.ch$$0252025$$zBorel, Alain$$xU10192
000256602 909CO $$pSB$$particle$$ooai:infoscience.epfl.ch:256602
000256602 960__ $$aemad.oveisi@epfl.ch
000256602 961__ $$apierre.devaud@epfl.ch
000256602 973__ $$aEPFL$$sPUBLISHED$$rREVIEWED
000256602 980__ $$aARTICLE
000256602 981__ $$aoverwrite
000256602 999C0 $$pLNCE$$0252593$$zBorel, Alain$$xU13077$$mraffaella.buonsanti@epfl.ch
000256602 999C0 $$xU12411$$pTHEOS$$mnicola.marzari@epfl.ch$$0252461