(1. 山東工業(yè)大學(xué)化工系，濟(jì)南 250061； 2. 北京科技大學(xué)應(yīng)用科學(xué)學(xué)院，北京100083)
摘 要: 研究了稀土元素釔對(duì)鋰鋁合金陽極充放電性能及其表面結(jié)構(gòu)的影響。在鋰鋁合金陽極中添加0.5%～1.5%釔，電池的放電容量和放電電壓分別提高了10 mAh和50mV。添加釔的鋰鋁合金陽極經(jīng)過3次充放電后，電極表面結(jié)構(gòu)完整均勻。多孔型鋰鋁合金陽極比平板型鋰鋁合金陽極的放電容量有明顯提高，添加0.5%～1.5%釔的多孔鋰鋁合金陽極具有理想的充放電性能。鋰鋁合金陽極的充放電過程受鋰原子在電極中的擴(kuò)散速度控制。
關(guān)鍵字: 熔鹽鋰電池；稀土元素；釔；鋰鋁合金；陽極
（1. Department of Chemical Engineering, Shandong University of Technology, Ji'nan 250061, P.R.China;
2. College of Applied Science, University of Science and Technology Beijing, Beijing 100083, P.R.China）
Abstract:The effects of yttrium on the charge-discharge behaviour and surface structure of lithium-aluminium alloy anode were studied. The experimental results indicated that the discharge capacity and voltage are enhanced about 10 mAh and 50mV respectively, and the surface structure is improved by adding 0.5%～1.5% yttrium in it; the porous lithium-aluminium alloy anode is better than the flat one and the porous yttrium-lithium-aluminium has the ideal charge-discharge properties. The charge-discharge process of lithium-aluminium alloy anode is controlled by the diffusion of lithium in it.
Key words: molten salt lithium battery; rare earth elements; yttrium; lithium-aluminium alloys; anodes
