Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Vincent Lacroix

Magali Reytier

Guilhem Roux

Albin Chaise

Pierre Dumoulin

Nicolas Tauveron

Jérôme Aicart

Aymeric Brunot

Julie Cren

Jerome Aicart

Jean-Baptiste Lopez-Velasco

A system for high-temperature reversible electrolysis of water, characterised in that it includes: a high-temperature reversible electrolyser, configured to operate in SOEC (solid oxide electrolyser cell) mode to produce hydrogen and store electricity, and/or in SOFC (solid oxide fuel cell) mode to withdraw hydrogen and produce electricity; a hydride tank, thermally coupled with the reversible electrolyser, the system being configured to allow the recovery of heat released by the hydride tank during hydrogen absorption in order to produce pressurised steam intended for entering the reversible electrolyser in SOEC mode, and to allow the recovery of heat released by the one or more outgoing streams from the reversible electrolyser in SOFC mode so as to allow the desorption of hydrogen from the hydride tank.

System for high-temperature reversible electrolysis of water comprising a hydride tank coupled with the electrolyser

The application relates to a process for operating in starting mode or in stand-by mode a unit, termed power-to-gas unit, comprising a number N of reactors (1) with a stack of elemental electrolysis cells of solid oxide type (SOEC), the cathodes of which are made of methanation reaction catalyst material(s).

Process for starting mode or stand-by mode operation of a power-to-gas unit comprising a plurality of high-temperature electrolysis (SOEC) or co-electrolysis reactors

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Grenoble, France

Vincent Lacroix