Lobo Rui F M, Santos Diogo M F, Sequeira Cesar A C, Ribeiro Jorge H F
ICEMS, IST/UTL, Av. Rovisco Pais, Lisboa 1049-001, Portugal.
Nanoscale Science Group (GNCN), Physics Department, FCT/UNL, Caparica 2829-516, Portugal.
Materials (Basel). 2012 Feb 6;5(2):248-257. doi: 10.3390/ma5020248.
Different types of experimental studies are performed using the hydrogen storage alloy (HSA) MlNiCoAlMn (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.
使用经过化学表面处理的储氢合金（HSA）MlNiCoAlMn（Ml：富镧混合稀土金属）作为质子交换膜燃料电池（PEMFC）应用中的阳极活性材料，进行了不同类型的实验研究。本文报道了最近开发的分子束热脱附光谱法（MB - TDS）技术，用于检测经处理的HSA的电化学氢吸收和释放。MB - TDS能够精确测定储氢合金（HSA）中吸收的氢质量，与传统的TDS方法相比具有显著优势。实验数据表明，使用这种化学处理合金的膜电极组件（MEA）具有增强的氢吸附表面能力。
