Al-Cu-Fe quasicrystals as anode of lithium ion battery

TL;DR

This study explores Al-Cu-Fe quasicrystals as anode materials in lithium-ion batteries, revealing their electrochemical behavior, capacity, and structural changes during cycling.

Contribution

It introduces Al-Cu-Fe quasicrystals as a novel anode material and analyzes their electrochemical properties and structural stability.

Findings

First specific discharge capacity of 204mAh/g

Oxidation peak at about 1.4V, reduction at 0.3V

Irreversible capacity due to incomplete Li removal

Abstract

In this paper, Al-Cu-Fe quasicrystal alloy was used as anode material of lithium-ion batteries. The first specific discharge capacity of quasicrystal was 204mAh/g. Cyclic voltammetry showed that oxidation peak of Al-Cu-Fe quasicrystal was at about 1.4V. The reduction peak was at 0.3V. Al-Cu-Fe quasicrystal have higher Li-ion diffusion impedance and Warburg in the first cycle. X-ray diffraction analysis demonstrate that Li atom enter into quasicrystal structure can not fully leave quasicrytal during first charge/discharge cycle which induce the irreversible capacity.