Journal
CHEMELECTROCHEM
Volume 1, Issue 8, Pages 1271-1274Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/celc.201402147
Keywords
copper; electrodes; hydrogen evolution; in operando conditions; scanning tunneling microscopy
Categories
Funding
- KTI (Kommission fur Technologie und Innovation)
- Swiss Competence Center for Energy Research (SCCER Heat & Electricity Storage)
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We used electrochemical scanning tunneling microscopy to study the intercalation of hydrogen into a Cu(111) model electrode under reactive (in operando) conditions. Hydrogen evolution causes hydrogen intermediates to migrate into the copper lattice as function of the applied potential and the resulting current density. This H-inclusion is demonstrated to be reversible. The presence of subsurface hydrogen leads to a significant surface relaxation/reconstruction affecting both the geometric and electronic structure of the electrode surface.
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