(西安交通大學(xué) 金屬材料強(qiáng)度國(guó)家重點(diǎn)實(shí)驗(yàn)室，西安 710049)
摘 要: 針對(duì)Ti-Mn基儲(chǔ)氫合金循環(huán)穩(wěn)定性差這一問(wèn)題，提出了一個(gè)關(guān)于TiMn基儲(chǔ)氫合金循環(huán)穩(wěn)定性的簡(jiǎn)易模型，并引入兩個(gè)表示儲(chǔ)氫合金本征屬性的因子：活化特征因子β和容量衰減因子A。采用該模型可以描述合金活化與容量衰減的全過(guò)程。實(shí)驗(yàn)測(cè)量了Ti0.26Zr0.07V0.21Mn0.1Ni0.3Cr0.03 和Ti0.26Zr0.07V0.19Mn0.1Ni0.3Cr0.05合金的活化與充放電循環(huán)過(guò)程，理論與實(shí)驗(yàn)有較好的吻合關(guān)系。
關(guān)鍵字: TiMn基儲(chǔ)氫合金； 電化學(xué)容量； 模型
of Ti-Mn based alloys
（Xi′an Jiaotong University, Xi′an 710049, P.R.China）
Abstract:In view of bad cycle stability of TiMn based alloys, a simple model for the cycle life of Ti-Mn hydrogenstorage alloys was give. Two factors were introduced to indicate the intrinsic characteristic of hydrogenstorage metal: active factor,β, and capacity-degrade factor ,A . The model can describe the whole process of activation and degradation. The activation and cycle process of two alloys: Ti0.26Zr0.07V0.21Mn0.1Ni0.3Cr0.03 and Ti0.26Zr0.07V0.19Mn0.1Ni0.3Cr0.05 were measured and the results agreed with the theory well.
Key words: Ti-Mn based hydrogen storage alloy； discharge capacity; model
