EP 3775323 A1 20210217 - ELECTROCHEMICAL METHOD FOR PRODUCING PRESSURISED HYDROGEN GAS BY ELECTROLYSIS AND SUBSEQUENT DEPOLARISATION
Title (en)
ELECTROCHEMICAL METHOD FOR PRODUCING PRESSURISED HYDROGEN GAS BY ELECTROLYSIS AND SUBSEQUENT DEPOLARISATION
Title (de)
ELEKTROCHEMISCHES VERFAHREN ZUR ERZEUGUNG VON UNTER DRUCK STEHENDEM WASSERSTOFFGAS DURCH ELEKTROLYSE UND ANSCHLIESSENDE DEPOLARISATION
Title (fr)
PROCEDE ELECTROCHIMIQUE DE PRODUCTION D'HYDROGENE GAZEUX SOUS PRESSION PAR ELECTROLYSE PUIS PAR DEPOLARISATION
Publication
Application
Priority
- FR 1852883 A 20180403
- FR 2019050772 W 20190403
Abstract (en)
[origin: WO2019193280A1] The invention relates to an electrochemical method for producing hydrogen gas by electrolysis and subsequent electrochemical conversion of H+ ions to H2 ions by depolarisation. Said method is intended to simply and industrially achieve high hydrogen gas pressures, for example >80 bar. To achieve this, the method consists in implementing a step E1 of electrolysing one electrolyte to produce oxygen gas and a step C° of converting a redox chemical energy to an electrical energy, with H2 being produced. In said method, - the electrolyte comprises Mm+ ions of a metal M corresponding to the redox couple (Mm+/M) and Aa+ ions of a depolarisation additive A corresponding to the redox couple (Aa+/A); - the electrolysis step E1 is initiated by supplying power between the anode and the cathode; Aa+ and Mm+ are respectively deposited as A and M on the cathode during the electrolysis E1 and oxygen gas is released at the anode; - the electrolysis E1 is interrupted by cutting off the power supply between the anode and the cathode; micro-cells are formed between A, M and the H+ ions, such that a depolarisation corresponding to the conversion step C° occurs, with H2 being produced and M and A being dissolved into Mm+ and Aa+ at the electrode, which acts as a cathode in step E 1; - the H2 produced is collected. The invention also relates to devices for implementing such a production method and a kit comprising one of said devices and the electrolyte components.
IPC 8 full level
C25C 1/06 (2006.01); C01B 3/08 (2006.01); C25B 1/04 (2021.01); C25B 5/00 (2006.01); C25C 1/08 (2006.01); C25C 1/16 (2006.01); H01M 12/08 (2006.01)
CPC (source: EP US)
C25B 1/04 (2013.01 - EP US); C25B 5/00 (2013.01 - EP US); C25B 11/046 (2021.01 - US); C25C 1/08 (2013.01 - US); C25C 1/16 (2013.01 - US); C25C 1/06 (2013.01 - EP); C25C 1/08 (2013.01 - EP); C25C 1/14 (2013.01 - EP); C25C 1/16 (2013.01 - EP); C25C 1/18 (2013.01 - EP); C25C 1/20 (2013.01 - EP); C25C 1/22 (2013.01 - EP); Y02E 60/36 (2013.01 - EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
FR 3079529 A1 20191004; FR 3079529 B1 20240426; EP 3775323 A1 20210217; JP 2021520451 A 20210819; US 2021123145 A1 20210429; WO 2019193280 A1 20191010
DOCDB simple family (application)
FR 1852883 A 20180403; EP 19720962 A 20190403; FR 2019050772 W 20190403; JP 2021503213 A 20190403; US 201917041473 A 20190403