Preparation of porous Mg electrode by electrodeposition
(1. School of Chemistry Engineering and Technology, Tianjin University, Tianjin 300072, China;
2. Tianjin Institute of Power Sources, Tianjin 300381, China)
2. Tianjin Institute of Power Sources, Tianjin 300381, China)
Abstract: In order to obtain a porous Mg electrode with a stable skeleton, organic Mg fuel cell (OMFC), the electrochemical behavior of Mg deposition on Cu and Ni metallic substrates in 1 mol/L EtMgBr/THF solution was investigated by SEM, EDS and electrochemical methods. The experimental results show that Mg can be electrodeposited on both substrates, as a continuous layer on a Cu substrate. Accordingly, an approach for producing a porous Mg electrode with a stable skeleton of OMFC was proposed by means of electrodeposition of Mg on a foamed Ni substrate with a layer of Cu pre-plating. The discharge performance of this porous Mg electrode of OMFC is superior to that of a planar Mg electrode.
Key words: magnesium electrodeposition; porous electrode; organic electrolyte; discharge performance