Researchers at the Korea Electrotechnology Research Institute (KERI) have developed a nano-tin interlayer that allows all-solid-state batteries to operate effectively at a pressure of 2 MPa. According to the study, these cells achieved an energy density exceeding 350 Wh/kg. This level of energy density is notably higher than the 150–250 Wh/kg range typically found in the conventional lithium-ion batteries used in current electronics and electri…