<strong>Y</strong>掺杂<strong>Ti</strong>膜的吸放氢行为

Y掺杂Ti膜的吸放氢行为

李聪, 王猛, 屠汉俊, 施立群

Behavior of Hydrogen Absorption and Desorption in Y-doped Ti Films

LI Cong, WANG Meng, TU Hanjun, SHI Liqun

图11 原子氢和分子氢在材料表面和体内的能态图

Fig.11 Energy states of atomic and molecular hydrogen on the surface and in the bulk of metal ( $E_{s}$ is the heat of solution for $\frac{1}{2} H_{2}$ molecules; $E_{C}$ is the energy barrier for conversion of $\frac{1}{2} H_{2}$ molecules to chemisorbed state H; $E_{C}^{'}$ is the energy barrier for conversion of adsorbed H to molecular hydrogen; $E_{A}$ is the energy barrier for transformation of adsorbed H into dissolved H; $E_{A}^{'}$ is the energy barrier for transformation of dissolved H into adsorbed H; $Q_{D}$ is the diffusion activation energy; $E_{b}$ is the binding energy between H and host atom; $E_{D e}$ is the de-trapping activation energy; $E^{'}$ is the saddle point energy)