Aluminum alloy anode materials for Li-ion batteries

17th IUMRS International Conference in Asia

Sun, Z.H.^1 ; Chen, Z.F.^1 ; Fu, Q.W.^1 ; Jiang, X.Y.^1

School of Materials and Engineering, Tianjin University of Technology, 391 Binshui Xidao, Xiqing District Tianjin

300384, China^1

关键词: Alloy anodes;    Cast alloys;    Cycle lives;    Cycle performance;    Discharge capacities;    Irreversible capacity loss;    Theoretical capacity;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/182/1/012011/pdf
DOI  :  10.1088/1757-899X/182/1/012011

来源: IOP

【 摘 要 】

Aluminum has larger theoretical capacity of 2235 mAh/g than that of graphite (372 mAh/g), but it has big disadvantages including shorter cycle life and higher irreversible capacity loss. Improving cycle performance can be obtained via alloying of aluminum. In this paper, two ternary aluminum alloy, Al7Cu2Fe and Al73Cu5Fe22were prepared. The main phase of Al7Cu2Fe alloy was Al7Cu2Fe. The heat treatment increased the proportion of Al7Cu2Fe. The main phase of Al73Cu5Fe22alloy was Al60Cu30Fe10. The heat treatment reduced the proportion of Al60Cu30Fe10. For two alloys, the heat treatment could increase discharge capacity compared with cast alloy. The discharge capacity was improved by 50%. The content of aluminum in alloys has little effect on improving cycle performance, and it has obvious influence on the phase structure of alloy with heat treatment.