Abstract: Battery development is essential to satisfy the green technology trend that requires electric-based technology. Lithium-ion battery (LIB) is the most popular battery that has been used in various electric technology. However, LIB has a concern on the safety aspect by using liquid electrolyte which is prone to thermal failure that leads to flame or explosion. Solid- state battery (SSB) recent development could handle such thermal problems due to the non-flammable characteristic of the solid electrolyte. SSB also has potential for future main battery candidates due to high energy & power density. Although there are many advantages, SSB also has several problems in recent development. Interfacial stability, low ionic conductivity on room temperature, mechanical properties, etc. need to be studied further to make an adjustment for further development. This review would give information regarding recent progress on SSB development from various types of electrolyte and failure mechanisms. Market research companies expect that EVs will replace ICEVs(internal combustion engine vehicles), and become the mainstream in the auto industry. And to become the unarguable leader in the industry, EV should have the similar level of mileage as the current ICEV, and it is important to increase the battery capacity of an EV battery to do so. There are two ways to increase capacity. First is increasing the number of batteries. But in this case, the battery price goes up and batteries take up so much space in the vehicle. A solid-state battery has higher energy density than a Li-ion battery that uses liquid electrolyte solution. It doesn’t have a risk of explosion or fire, so there is no need to have components for safety, thus saving more space. Then we have more space to put more active materials which increase battery capacity in the battery. A solid-state battery can increase energy density per unit area since only a small number of batteries are needed. For that reason, a solid-state battery is perfect to make an EV battery system of module and pack, which needs high capacity.

 

| DOI: 10.17148/IARJSET.2021.8437