Synthesis of LiCo0.94Mg0.06O2: a promising material with high dielectric and microwave absorption performance

Abstract

In this work, we initially report dielectric and microwave absorption properties of LiCo0.94Mg0.06O2 with different sintering temperatures. Further, we characterize and analyze phase composition and microstructure of LiCo0.94Mg0.06O2, which was fabricated using a solid-state reaction. The results show that dielectric properties of LiCo0.94Mg0.06O2 composites can be controlled by shifting sintering temperature. The dielectric properties of LiCo0.94Mg0.06O2 composites are ideal at 900 °C and remain stable with the extension of sintering time. The real and imaginary part of this composite is approximate 16 and 4, respectively. The calculated reflection loss of the LiCo0.94Mg0.06O2 composites exhibited a remarkable microwave absorption performance. The minimum reflection loss value of the LiCo0.94Mg0.06O2 composites is − 50.1 dB at a thickness of 2.1 mm. Consequently, this study opens up new way for absorbent, expands the applications of LiCo0.94Mg0.06O2 into new areas beyond active cathode material, and will probably attract the attention of materials scientist.