STUDY OF CONVENTIONAL SINTERING AND ELECTROMECHANICAL PROPERTIES CHARACTERIZATION OF SOLID ELECTROLYTE LI1.3AL0.3TI1.7(PO4)3

• Main Author: Putra Rihandoko, Nicholas
• Format: Final Project
• Language: Indonesia
• Subjects: Teknik (Rekayasa, enjinering dan kegiatan berkaitan)
• Online Access: https://digilib.itb.ac.id/gdl/view/67558
• Institution: Institut Teknologi Bandung

In addition to electrochemical properties, basic mechanical and thermal phenomena also have a great influence on battery performance. Li1.3Al0.3Ti1.7(PO4)3(LATP) is a solid electrolyte with ceramic material properties with a relatively simple fabrication process. Although the material powder LATP material can already be obtained commercially along with abundant research has been conducted to improve the performance of LATP solid electrolytes, the fabrication methods that can be carried out in Indonesia are still limited, especially related to research purposes. In addition, studies related to the electrical and mechanical properties of LATP in the same research has also not been found. In this study, LATP solid electrolyte powder was solidified into green body. with the help of binder PVA and then heated into pellets using the conventional sintering method. Based on electromechanical characterization with EIS testing and compressive tests, the average value is obtained ionic conductivity of 1.05 S/cm, compressive strength of 146.7 KPa, elastic modulus of 21.4 MPa, and relative density of 70.0%. The ionic conductivity value is good enough for a simple fabrication process. for a simple fabrication process, but the elastic modulus and strength of the material are very low. Based on comparing the microstructure of the specimen with other research reference specimens using SEM, it is found that the grain and grain boundary characteristics of the specimen specimens do match their electromechanical properties, with porosity having a greater greater influence on the small strength and elastic modulus of the specimens.