Effects of alloying substrates on the characteristics of the lithium negative electrode

Abstract Amorphous alloys of Ni 70 Al 10 B 20 and Co 70 Al 10 B 20 have been used as negative electrode substrates for rechargeable lithium batteries. The charge-discharge behavior of lithium has been investigated at the alloy substrates in some organic electrolytes. The highest cycling efficiency was observed at the amorphous Co 70 Al 10 B 20 substrate in a mixture of dimethylsulfoxide and propylene carbonate containing LiPF 6 . The cycling efficiency of this type of substrate depended on the diffusion coefficient of lithium in the alloy as well as on the exchange current for lithium deposition from the organic solution.