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HT‐PEM Fuel Cell System with Integrated Complex Metal Hydride Storage Tank
Author(s) -
Urbanczyk R.,
Peil S.,
Bathen D.,
Heßke C.,
Burfeind J.,
Hauschild K.,
Felderhoff M.,
Schüth F.
Publication year - 2011
Publication title -
fuel cells
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.485
H-Index - 69
eISSN - 1615-6854
pISSN - 1615-6846
DOI - 10.1002/fuce.201100012
Subject(s) - hydrogen storage , hydrogen , proton exchange membrane fuel cell , hydride , hydrogen fuel , energy storage , materials science , direct ethanol fuel cell , sodium , hydrogen fuel enhancement , metal , chemistry , chemical engineering , waste management , fuel cells , nuclear engineering , thermodynamics , metallurgy , organic chemistry , engineering , power (physics) , physics
A hydrogen storage tank based on the metal hydride sodium alanate is coupled with a high temperature PEM fuel cell (HT‐PEM). The waste heat of the fuel cell is used for desorbing hydrogen from the storage tank that in return feeds the fuel cell. ZBT has developed the HT‐PEM fuel cell, Max‐Planck‐Institut für Kohlenforschung the sodium alanate, and IUTA the hydrogen storage tank. During the experiments of the system the fuel cell was operated by load cycling from 165 up to 240 W. Approximately 60 g of hydrogen were delivered from the tank, which was charged with 2676.8 g of sodium alanate doped with 4 mol.% of TiCl 3 . This amount of hydrogen was desorbed in 3 h and generated a cumulated electrical energy of 660 Wh. In the first cycle 81.5 g of hydrogen were supplied during 3.69 h to the HT‐PEM fuel cell, which was operated nearly constant at 260 W. In the latter case the cumulated electrical energy was 941 Wh.