Certain exemplary embodiments can provide a system, machine, device, manufacture, circuit, composition of matter, and/or user interface adapted for and/or resulting from, and/or a method and/or machine-readable medium comprising machine-implementable instructions for, activities that can include and/or relate to, converting biomass to synthetic hydrocarbons using a biomass thermal decomposer and/or a hydrocarbon synthesizer.

The invention relates to a method for the electrochemical reduction of carbon dioxide in the liquid or supercritical state, comprising at least two electrodes separated from each other by a distance of less than or equal to 7 millimeters, preferably less than or equal to 1 millimeter.