Co对MlNi_4.3-xCo_x Al_0.7贮氢电极动力学性能的影响

来源期刊：中国有色金属学报1999年第3期

论文作者：潘洪革

文章页码：453 - 457

关键词：合金； 电极； 动力学性能

Key words：hydrogen storage alloy; electrode; kinetic s property

摘    要：详细研究了Co对MlNi_4.3-xCo_x Al_0.7 (x=0, 0.3, 0.5, 0.7, 0.9, 1.1, 1.3)贮氢电极的动力学特性的影 响; 研究的动力学参数包括高倍率放电特性HRD、交换电流密度J₀ 、 极限电流密度 J _L、 对称因子β 以及氢在α 相中的扩散系数D_α。 实验结果表明： 随着MlNi_4.3-xCo_x Al_0.7贮氢电极中Co含量的增大，合金的高倍率放电能力迅速减小，交换电流密度J₀，极限电流密度J _L, 对称因子β 以 及氢在α相中扩散系数D_α显著降低。

Abstract: The effects of Co content on the kinetic properties, includ ing high rate dischargeability HRD, exchange current density J₀, limiting current density J _L, the symmetry factor β, and the diffusion coeffici ent of hydrogen in the α phase D_α, of MlNi_4.3-xCo_x Al_0.7(x="0," 0.3, 0.5, 0.7, 0.9, 1.1, and 1.3) hydride electrodes, have been studied systematically. The results show that with increasing Co content in MlNi_4.3-xCo_x Al_0.7 hydride electrodes, the HRD, J₀, J _L, β and D_α decrease markedly.