Structural and electrochemical properties of Ti1.5Zr5.5VxNi10−x
作者： Kwo Young , Taihei Ouchi , Michael A. Fetcenko , Willy Mays , Benjamin Reichman
DOI: 10.1016/J.IJHYDENE.2009.08.032
关键词:
摘要: Abstract Quaternary alloys with the formula Ti1.5Zr5.5VxNi10−x (x between 0 and 3.0) were studied as a potential replacement for Laves phase used negative electrode active material in nickel metal hydride batteries. The V-containing all show multi-phase structures. major shifts from Zr7Ni10 structure to Zr9Ni11 finally C14 vanadium content increases. Other minor phases C15 ZrNi crystal structures are also present. solubility of is high AB2 (both C15), moderate very low phases. bulk hydrogen transport property dominated by synergetic effects Electrochemical testing shows that highest discharge capacity, 357 mAh/g, was obtained an alloy chemical composition Ti1.5Zr5.5V2.5Ni7.5 mainly structure. Testing rate dischargeability controlled surface reaction Ti1.5Zr5.5V0.5Ni9.5 has best dischargeability.
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