Al–Cu–Fe quasicrystals as the anode for lithium ion batteries

Abstract

In this paper, Al–Cu–Fe quasicrystal alloy was used as the anode material for lithium-ion batteries. The first specific discharge capacity of quasicrystal was 204 mA h/g. Cyclic voltammetry showed that the oxidation peak of the Al–Cu–Fe quasicrystal was at about 1.4 V. The reduction peak was at 0.3 V. The Al–Cu–Fe quasicrystals had a higher Li-ion diffusion impedance and Warburg impedance in the first cycle. X-ray diffraction analysis demonstrated that Li atoms enter into the quasicrystal structure and can-not fully leave the quasicrystal during the first charge-discharge cycle, which induces an irreversible capacity.