Microstructure and some Dynamic Performances of Ti-V-Pd-Cr-Ni Metal Hydride Electrode Alloy

Xian Wen Zeng; Yu Qing Qiao; Min Shou Zhao

doi:10.4028/www.scientific.net/AMR.512-515.1937

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 512-515Microstructure and some Dynamic Performances of...

Microstructure and some Dynamic Performances of Ti-V-Pd-Cr-Ni Metal Hydride Electrode Alloy

Abstract:

Microstructure and Some Dynamic Parameters of Ti-V-Pd-Cr-Ni metal hydride electrode alloy have been investigated by XRD, FESEM and EIS measurements. The result shows that the alloy is mainly composed of bcc phase and TiNi-based secondary phase. The discharge capacity increases with increasing temperature in a wider temperature region from 303 K to 343 K. The result of electrochemical impedance spectrometry indicates that RT decreases with increasing temperature, which is 2.392Ω, 0.531Ω and 0.156Ω at 303K, 323K and 343K, respectively. However, I₀ increases with increasing temperature, which is 72.76 mA g^-1, 327.75 mA g^-1 and 1262.88 mA g^-1 at 303K, 323K and 343K, respectively.