Nanosheet morphology driven energy storage capacity of Gd-doped lithium oxide nanomaterial under wide range of temperatures

초록

The Gd-doped lithium oxide nanomaterial is prepared through a simple chemical co-precipitation route. The pristine and Gd-doped lithium oxide nanomaterial displays the elongated nanosheets and spherical particle formation which facilitate the high-density grain boundaries. Together, the microstructures afford more active sites for the effective polarization, thus enabling additional capacity to store the charges. Material composition has crucial part in strengthening the dielectric properties in this work. The sample GL2 performed well in overall measurement due to the little doping. The Gd doping emphasizes the notable dielectric changes in lithium oxide. Also, it impedes the high dielectric loss. This feature enables them as promising material for energy devices. The dielectric constant presents a four-fold increase in the GL2 sample and a drastic reduction in the GL3 sample. From impedance analysis, the GL2 sample holds high impedance, which implies large electric energy savings for the material. Among three samples, the GL2 sample contributes the reliable response at wide temperatures. Electric modulus ensures the Li-ion mobility increase owing to the Gd doping, which assures the relaxation time decrease. According to results, the Gd-doped lithium oxide (GL2) material is one of the capable dielectric materials in recent days. Also, Gd became a potential element to change dielectric properties to the desired application.

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