Solid-state batteries can greatly increase energy density, are safer and more reliable, so they attract a lot of people's attention. Solid electrolytes have advantages in many respects compared to liquid electrolytes. In addition, solid-state batteries can improve packaging efficiency because the cells can be stacked in series to form a bipolar structure. The space between the cells can be reduced to increase the energy density. Despite its many advantages, solid-state batteries have several challenges: the low conductivity of solid electrolyte ions leads to limited power density of the battery; the electrode-electrolyte interface is not very compatible; the electrode has limitations in terms of dynamics.
Hyundai Motor independently developed solid-state battery technology and did not cooperate with experts from Samsung SDI and LG Chem. Some companies are considering solid-state batteries as the next generation of batteries, which are being studied, such as Samsung SDI and LG Chem. In smartphones and electric vehicles, solid-state batteries are expected to replace lithium batteries.
Samsung SDI and LG Chem confirmed that the company is developing solid-state battery technology, but they are not willing to disclose which step of the development work. Solid-state batteries have a lower risk of explosion and are safer. Although companies are currently researching a wide variety of next-generation batteries, solid-state batteries are likely to enter the market soon.
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