The low current is considered one of the biggest hurdles in the development of solid-state batteries. It is the reason why the batteries take a relatively long time to charge. It usually takes about 10 to 12 hours for a solid-state battery to fully charge. The new cell type that Jülich scientists have designed, however, takes less than an hour to recharge.
"In initial tests, the new battery cell was very stable over 500 charge and discharge cycles and retained over 84 percent of its original capacity," said Dr. Shicheng Yu. "There is still room for improvement here. Theoretically, a capacity loss of less than 1 percent should even be feasible," said Yu, who developed and tested the battery as part of a China Scholarship Council (CSC) funding programme at the Jülich Institute for Energy and Climate Research (IEK-9).
Institute director Prof. Ruediger-A. Eichel is also convinced of the advantages of the new battery concept. "The energy density is already very high at around 120 mAh/g, even if it is still slightly below that of today's lithium-ion batteries," says Eichel. In addition to the development for electromobility, the spokesman for the "battery storage" topic in the Helmholtz Association believes solid-state batteries will also be used in other areas in future: "Solid-state batteries are currently being developed with priority as energy storage for next-generation electric vehicles. But we also believe that solid-state batteries will prevail in other fields of application that require a long service life and safe operation, such as medical technology or integrated components in the smart home area," says Eichel.
We're Here to Help