ChemInform Abstract: Heat-Treatment Effects of V-Based Solid Solution Alloy with TiNi-Based Network Structure on Hydrogen Storage and Electrode Properties.

✍ Scribed by M. TSUKAHARA; K. TAKAHASHI; T MISHIMA; A. ISOMURA; T. SAKAI

• Publisher: John Wiley and Sons
• Year: 2010
• Weight: 29 KB
• Volume: 28
• Category: Article
• ISSN: 0931-7597
• DOI: 10.1002/chin.199713012

✦ Synopsis

Heat-Treatment Effects of V-Based Solid Solution Alloy with TiNi-Based Network Structure on Hydrogen Storage and Electrode Properties.

-The effects of thermal treatments in the temp. range 973 → 1473 K are studied for the title alloy consisting of a V-based solid solution main phase acting as main hydrogen storage site and of a TiNi-based secondary phase acting as microcurrent collector and electrocatalyst for electrochemical reactions. Heat treatment at 1073 K increases the volume fraction of the main phase which improves the hydrogen storage capacity and reduces the corrosive V content in the secondary phase. This leads to an improvement of the durability during charge-discharge cycles. Treatment at ≥ 1173 K increases the grain size of the main phase and damages the network structure of the secondary phase which results in decreasing high rate capabilities and cycle lives. -(TSUKAHARA, M.;