H2 generation and galvanic corrosion behavior of metallic couples of Mg scrap and stainless steel net in aqueous solutions with different NaCl concentrations

• Main Authors: Li-Fan Chen, 陳力凡
• Other Authors: 汪俊延
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/01740964732529382295

碩士 === 國立中興大學 === 材料科學與工程學系所 === 97 === This work converted low-grade Mg scrap (LGMS) into hydrogen in aqueous NaCl. LGMS bath at 600 oC in a semi-solid state was prepared. AISI 304 stainless steel (S.S.) net was used as a metallic catalyst. The net was deformed into a wave-like shape. The wave-like S.S. nets were dipped into the semi-solid bath to form LGMS/S.S. couples. The generated hydrogen volume from the reaction of the couple in aqueous NaCl would increase with increasing the NaCl concentration from 3.5 wt.% to 22 wt.%. The couple that reacted in 3.5 liters NaCl solution produced more hydrogen than that did in 1.5 liters NaCl solution. A new H2-on-demand system mainly containing aqueous NaCl, LGMS/S.S. was employed for the first time in practice to generate electricity by proton exchange membrane fuel cell (PEMFC). The electric power produced by the PEMFC drove a motor fan and illuminated a high-power LED lamp, respectively.