کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1280528 | 1497688 | 2006 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Kinetic and electrochemical properties of icosahedral quasicrystalline Ti45Zr35Ni17Cu3Ti45Zr35Ni17Cu3 powder Kinetic and electrochemical properties of icosahedral quasicrystalline Ti45Zr35Ni17Cu3Ti45Zr35Ni17Cu3 powder](/preview/png/1280528.png)
Kinetic and electrochemical properties of icosahedral quasicrystalline Ti45Zr35Ni17Cu3Ti45Zr35Ni17Cu3 alloy powder as negative electrode material of Ni–MH battery have been investigated at different temperatures. The calculated results show that the apparent activation enthalpy of the charge-transfer reaction is 43.89kJmol-1, and the activation energy of hydrogen diffusion is 21.03kJmol-1. The exchange current density and the diffusion coefficient of hydrogen in the bulky electrode increase with increasing temperature, indicating that increasing temperature is beneficial to charge-transfer reaction and hydrogen diffusion. As a result, the maximum discharge capacity, activation property and high-rate dischargeability are greatly improved with increasing temperature. However, the charge retention and the cycling stability degrade with the increase of the temperature.
Journal: International Journal of Hydrogen Energy - Volume 31, Issue 10, August 2006, Pages 1394–1400