US 11,791,485 B2
Method and system for examining a fuel cell by means of a cyclic voltammetric measurement
Michael Braunecker, Nuremberg (DE); and Andreas Reiner, Baiersdorf (DE)
Assigned to Siemens Energy Global GmbH & Co. KG, Bayern (DE)
Appl. No. 17/614,033
Filed by Siemens Energy Global GmbH & Co. KG, Bayern (DE)
PCT Filed Apr. 17, 2020, PCT No. PCT/EP2020/060844
§ 371(c)(1), (2) Date Nov. 24, 2021,
PCT Pub. No. WO2020/239323, PCT Pub. Date Dec. 3, 2020.
Claims priority of application No. 19177645 (EP), filed on May 31, 2019.
Prior Publication US 2022/0263107 A1, Aug. 18, 2022
Int. Cl. H01M 8/0444 (2016.01); H01M 8/04082 (2016.01); H01M 8/04492 (2016.01); H01M 8/04955 (2016.01)
CPC H01M 8/04447 (2013.01) [H01M 8/04201 (2013.01); H01M 8/04529 (2013.01); H01M 8/04955 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method of examining a fuel cell by means of a cyclic voltammetry analysis, the method comprising:
ascertaining a gas composition in the fuel cell using the cyclic voltammetry analysis,
wherein the fuel cell comprises a first gas space for a first reactant and a second gas space for a second reactant, where no reactant is supplied at least to one of the two gas spaces during the cyclic voltammetry analysis, and
wherein the cyclic voltammetry analysis is used to ascertain a concentration of hydrogen in the gas spaces,
the method further comprising:
monitoring of a state of a stored or nonoperational fuel cell; and/or
monitoring and/or controlling of a shutdown operation of the fuel cell.