通过XRD、SEM分析和电化学实验,研究了热处理对快淬贮氢合金组织和电化学性能的影响.研究表明,400℃热处理对快淬合金晶粒变化不明显,900℃热处理后合金晶粒明显长大,1100℃热处理使合金部分熔化,随后发生了平衡凝固;900℃热处理后,单胞体积和放电容量均达到最大值,但充放电循环稳定性最差,400℃和1100℃热处理后,放电容量稍有降低,但充放电循环稳定性较好.
参考文献
[1] | Naramura Y;Naramura H;Fujitani S et al.Homogenizing behavior in a hydrogen-absorbing LaNi4.55Al0.45 alloy through annealing and rapid quenching[J].Journal of Alloys and Compounds,1994,210:299-303. |
[2] | Miyamura H;Sakai T;Kuriyama N et al.Hydrogen storage alloys rapidly solidified by the melt-spinning method and their characteristics as metal hydride electrodes[J].Journal of Alloys and Compounds,1993,192:176-178. |
[3] | Notten P H L;Einerhand R E F;Daams J L C .On the nature of the electrochemical cycling stability of non-stoichiometric LaNi5-based hydride-forming compounds, Part I. Crystallography and electrochemistry[J].Journal of Alloys and Compounds,1994,210:221-232. |
[4] | LI C J;Wang X L .The temperature features of the rapidly quenched Mm(NiCoMnTi)5 alloy as a negative electrode[J].Journal of Alloys and Compounds,1999,282:225-230. |
[5] | Li CJ.;Wang XL. .The relations between the microstructure and the capacity decay rate of MLNi3.8Co0.6Mn0.55Ti0.05 alloy. I. Capacity decay rate measurements[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,1998(1/2):242-245. |
[6] | Li CJ.;Wang XL. .The relations between the microstructure and the capacity decay rate of the MLNi3.8Co0.6Mn0.55Ti0.05 alloy II. Microstructure investigations and discussions[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,1998(1/2):246-254. |
[7] | Li CJ.;Wang CY.;Wang XL. .Investigations on ML(NiCoMnTi)(5) alloys prepared with different solidification rates[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,1998(1/2):300-306. |
[8] | 李传建;王新林;李岫梅 .冷却速度对Ml(NiCoMnTi)5贮氢合金电化学性能的影响[J].金属学报,1998,34(03):289-292. |
[9] | Li CJ.;Wang XL. .The influence of the annealing temperature on the electrochemical properties and the structure of the melt-spun ML(NiMnTiCo)(5) hydrogen-storage alloy[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,1998(1/2):278-283. |
[10] | 王秋娟,李全安,陈云贵,涂铭旌.快淬对贮氢合金组织和电化学性能的影响[J].洛阳工学院学报(自然科学版),2001(02):8-11. |
[11] | 李全安,桑革,李建文,陈云贵,涂铭旌.非化学计量比贮氢合金及其电极特性[J].功能材料,2001(02):156-157,163. |
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