The scaling-up of
electrochemical CO2 reduction requires
circumventing the CO2 loss as carbonates under alkaline
conditions. Zero-gap cell configurations with a reverse-bias bipolar
membrane (BPM) represent a possible solution, but the catalyst layer
in direct contact with the acidic environment of a BPM usually leads
to H2 evolution dominating. Here we show that using acid-tolerant
Ni molecular electrocatalysts selective (>60%) CO2 reduction
can be achieved in a zero-gap BPM device using a pure water and CO2 feed. At a higher current density (100 mA cm–2), CO selectivity decreases, but was still >30%, due to reversible
product inhibition. This study demonstrates the importance of developing
acid-tolerant catalysts for use in large-scale CO2 reduction
devices.
The melting and glass-forming behaviour of a range of organic cages was investigated, with quenching of melted liquid states providing molecular glasses, one of which exhibited improved gas uptake compared to the starting amorphous cage.
Imidazolium ionic liquids are potentially useful solvents for both carbon dioxide reduction conversion and capture. In particular electrocatalytic CO2 reduction has been shown to occur at low overpotentials using a...
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