Molecular Beam-Thermal Desorption Spectrometry (MB-TDS) Monitoring of Hydrogen Desorbed from Storage Fuel Cell Anodes

Materials

Rui F. M. Lobo¹  Diogo M. F. Santos¹  Cesar A. C. Sequeira¹ 

[1] ICEMS, IST/UTL, Av. Rovisco Pais, Lisboa 1049-001, Portugal; E-Mails:

关键词: hydride electrode;    hydrogen storage;    fuel cell anode;    thermal desorption spectrometry;   

DOI  :  10.3390/ma5020248

来源: mdpi

【 摘 要 】

Different types of experimental studies are performed using the hydrogen storage alloy (HSA) MlNi_3.6Co_0.85Al_0.3Mn_0.3 (Ml: La-rich mischmetal), chemically surface treated, as the anode active material for application in a proton exchange membrane fuel cell (PEMFC). The recently developed molecular beam—thermal desorption spectrometry (MB-TDS) technique is here reported for detecting the electrochemical hydrogen uptake and release by the treated HSA. The MB-TDS allows an accurate determination of the hydrogen mass absorbed into the hydrogen storage alloy (HSA), and has significant advantages in comparison with the conventional TDS method. Experimental data has revealed that the membrane electrode assembly (MEA) using such chemically treated alloy presents an enhanced surface capability for hydrogen adsorption.

【 授权许可】

CC BY   
© 2012 by the authors; licensee MDPI, Basel, Switzerland.