The MIEC electrolyte cells exhibit more stable operation compared to purely ion conducting electrolyte (YSZ) cells.
The analysis also shows that highly active electrodes should lower the tendency for degradation even with a purely ion conducting electrolyte cell.
Thus, in SOFC mode, suitably designed MIEC electrolyte cells consume fuel at the same rate, deliver the same power and release the same amount of joule heat as purely ion conducting electrolyte cells.
Similarly, in SOEC mode, MIEC electrolyte cells consume water vapor at the same rate, generate hydrogen at the same rate, consume the same electrical power and release the same joule heat as purely ionic conducting electrolyte cells.
Materials for electrodes should exhibit electronic and ionic conductivity in combination with porosity and catalytic activity, whereas the electrolyte has to be a purely ionically conducting and gas-tight membrane.
These studies confirmed that these electrolyte materials are purely Ag+ conducting up to 50 mol% CuI in xCuI–(100 − x)[2Ag2O 0.7V2O5 0.3B2O3] and xCuI–(100 − x)[Ag2O 0.7MoO3 0.3WO3] systems and small fraction of tCu+ exists above 60 mol% CuI.
In fact, it "often requires faculty members with a different working mindset and modus operandi than those conducting purely basic research".
It is shown that MIEC cells can be designed to operate as efficiently as those made of a purely ionic conducting electrolyte (e.g. YSZ).
The administration has also been more forceful in thwarting deals conducted purely for tax purposes.
The resulting rule, named after a prominent proponent, Paul Volcker, a former head of the Federal Reserve, prohibits banks from "proprietary trading", meaning transactions conducted purely for their own gain, rather than to serve clients.
