Long-term performance of LG Chem's lithium-sulfur battery has been verified again

According to a recent report on the 'Korean Nationality' website, the performance of the lithium-sulfur battery developed by South Korea's LG Chem has been verified again in the recent drone flight test. The high-altitude long-endurance solar unmanned aerial vehicle developed by the Korean Aerospace Research Institute uses lithium-sulfur batteries supplied by LG Chem. In the most recent test flight, the unmanned aerial vehicle stayed in the air for 13 hours and 11 minutes. Among them, 7 hours of flying in the stratosphere at an altitude of 12-22 kilometers. According to LG Chem, the energy density of the lithium-sulfur battery assembled on the drone is 410wh/㎏, which is much higher than the energy density of the current mass-produced lithium battery of 260-270wh/㎏. During the test flight, the drone alternately used airborne solar cells and lithium-sulfur battery energy, and the number of charge-discharge cycles of the lithium-sulfur battery was higher than the target level. This experiment verifies the charging and discharging stability of the lithium-sulfur battery in the actual use environment. For a long time, lithium-sulfur batteries have had the problem that repeated charging and discharging may lead to structural instability. The anode of lithium-sulfur batteries uses sulfur-carbon composites instead of metal oxides, and the cathode uses lightweight materials such as lithium metal instead of graphite. By weight, the energy density of lithium-sulfur batteries is more than 1.5 times that of current lithium batteries, and it is expected to become the mainstream product of a new generation of secondary batteries. LG Chem plans to process lithium-sulfur batteries in batches after 2025. By then, the energy density is expected to be more than twice that of existing lithium batteries. Ru0026D competition around next-generation secondary batteries is becoming increasingly fierce. The industry generally believes that it is the performance and commercialization time of the new generation of batteries that will determine the outcome. Three important secondary battery processing companies in South Korea, LG Chem, Samsung SDI and SK Innovation all stated that the commercialization of the new generation of secondary batteries is not expected to be earlier than 2025. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: The University of Maryland develops a printable solid electrolyte film to promote the development of next-generation lithium batteries