Dataset

FZJ-2024-04861

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Replication NMR Data for: In operando NMR investigations of the aqueous electrolyte chemistry during electrolytic CO₂ reduction

Jovanovic, S. (Corresponding author)FZJ* ; Jakes, P.FZJ* ; Merz, S.FZJ* ; Daniel, D. T.FZJ* ; Eichel, R.-A.FZJ*RWTH* ; Granwehr, J.FZJ*RWTH*

2024
Forschungszentrum Jülich Jülich

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Please use a persistent id in citations: doi:10.26165/JUELICH-DATA/0GQJFC

Abstract: NMR raw data of 13C and 23Na experiments for the in operando CO2 electrolysis experiments in aqueous HCO3- electrolyte, as described in the publication. The in operando electrolysis experiments were divided into 3 stages: open circuit voltage (OCV), chronoamperometry (CA) at a constant voltage slightly below the electrolysis potential of -1.1 V vs. Ag/AgCl, and finally the chronopotentiometry (CP) at a constant current density of -10 µA/cm², where the electrolysis reaction took place. For each stage, 12 hours of spectra were recorded (Spectra recording). Afterwards, saturation recovery and CPMG experiments were performed for the determination of T1 and T2, respectively. In case of the 13C experiments, additional 1D exchange spectroscopy (EXSY) experiments were performed for the determination of the CO2/HCO3- exchange rate. 13C experiments were performed at two different magnetic fields (14.1 T and 9.4 T), 23Na at a single magnetic field (14.1 T).

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Contributing Institute(s):

1. Grundlagen der Elektrochemie (IET-1)

Research Program(s):

1. 1232 - Power-based Fuels and Chemicals (POF4-123) (POF4-123)
2. DFG project 390919832 - EXC 2186: Das Fuel Science Center – Adaptive Umwandlungssysteme für erneuerbare Energie- und Kohlenstoffquellen (390919832) (390919832)

Appears in the scientific report 2024

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