EP 1206808 A1 20020522 - DETERMINATION OF THE FUEL CONCENTRATION IN THE ELECTROLYTE OF FUEL CELLS THAT ARE OPERATED WITH LIQUID FUEL
Title (en)
DETERMINATION OF THE FUEL CONCENTRATION IN THE ELECTROLYTE OF FUEL CELLS THAT ARE OPERATED WITH LIQUID FUEL
Title (de)
BESTIMMUNG DER BRENNSTOFFKONZENTRATION IM ELEKTROLYT VON MIT FLÜSSIGEM BRENNSTOFF BETRIEBENEN BRENNSTOFFZELLEN
Title (fr)
DETERMINATION DE LA CONCENTRATION EN COMBUSTIBLE DANS L'ELECTROLYTE DE CELLULES ELECTROCHIMIQUES ACTIONNEES PAR COMBUSTIBLE LIQUIDE
Publication
Application
Priority
- DE 0002771 W 20000816
- DE 19938790 A 19990816
Abstract (en)
[origin: DE19938790A1] The invention relates to a method for determining the fuel concentration in the electrolyte of fuel cells that are operated with liquid fuel and especially the concentration of methanol in the electrolyte of direct methanol fuel cells. The capacity of a capacitor is measured using the fuel/electrolyte-mixture as a dielectric. The dielectric constant of the mixture is determined on the basis of said capacity and the fuel concentration is subsequently determined.
IPC 1-7
IPC 8 full level
G01N 27/22 (2006.01); H01M 8/04 (2006.01); H01M 8/04186 (2016.01)
CPC (source: EP US)
G01N 27/221 (2013.01 - EP US); H01M 8/04194 (2013.01 - EP US); Y02E 60/50 (2013.01 - EP)
Citation (search report)
See references of WO 0113451A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
DE 19938790 A1 20010222; CA 2381964 A1 20010222; EP 1206808 A1 20020522; JP 2003507859 A 20030225; US 2002109511 A1 20020815; WO 0113451 A1 20010222
DOCDB simple family (application)
DE 19938790 A 19990816; CA 2381964 A 20000816; DE 0002771 W 20000816; EP 00962223 A 20000816; JP 2001517449 A 20000816; US 7812302 A 20020219