You need to make 550 liters of oxygen in 8 hours. On average in the paper provided they made about 400 milliliters of oxygen per hour (throwing out the high and low outliers). That's 3.2 liters per 8 hours. At that rate you'd need 171 times more equipment than they had for this test to make this work.
They also burned through their electrodes quite often, so you'd need a large supply of these or a way to re-coat them locally.
I'd estimate the equipment weighs between 10 and 25 kg. You've got two crucibles as well as heating elements and insulation. You'd get some economy of scale so you'd need between 855kg and 2,000kg per astronaut, assuming a 100% increase in efficiency.
You could also look at CO2 photodissociation. There's been recent research in using ultraviolet light to fully strip CO2 to C and O2. It could be more efficient and simpler; however it is recycling vs adding new oxygen to the environment so that may not fit your criteria.