What does SOEC stand for?

Abbreviation: SOEC, solid oxide electrolytic cell. (A) Flat-tube SOEC and (B) assembly of SOEC. SOEC, solid oxide electrolytic cells. The assembled cell was placed in a high-temperature furnace, and the furnace temperature was increased to the reaction temperature at a heating rate of 2–3°C/min using a temperature-control system.

Does SOEC operating temperature affect system exergy efficiency?

The effects of the SOEC operating temperature on the system exergy efficiency are evaluated at a H/C ratio of 10.54, and a current density of −6000 A m −2, within the validated temperature range, with the results depicted in Fig. 8.

How does a SOEC work?

Electrochemical reduction of H 2 O or CO 2 proceeds on the negatively charged fuel electrode, and oxide ions are conducted through the electrolyte and onto the positively charged oxygen electrode, where they oxidatively recombine into gas-phase O 2. When operated in reverse, an SOEC functions as a solid oxide fuel cell (SOFC).

What is a solid oxide electrolytic cell (SOEC)?

Solid oxide electrolytic cells (SOECs) with oxygen ion- or proton-conducting electrolytes have received extensive attention in recent years as a kind of energy storage technology. SOECs achieve the synthesis of chemicals such as hydrogen, CO or syngas by electrolyzing water, CO 2 or both at high temperatures.

What is the stacking technology of SOEC?

The stacking technology of SOEC is similar to that of SOFC, which is mainly classified into planar and tubular types [Figure 10A and B]. Planar cells are more prevalent in practical applications due to their simple structure, high power density, low internal resistance, and low manufacturing cost .

Why do SOEC systems need higher temperatures?

The higher temperatures required for SOEC systems reduce the demands on reaction kinetics, helping to overcome some limitations of conventional electrolysis cells. This results in increased electrolysis efficiency and reduced polarization losses.