Samsung’s research team has found a way to effectively almost double the capacity of its lithium ion batteries, according to a report from Business Korea. Specifically, the research arm of the company has supposedly developed a technology to make a new “silicon cathode material” for coating the graphene of the battery’s silicon surface, which allows it to support new levels of energy density — up to twice that of currently-available batteries.
You can read the details of the technology at Nature.com:
The graphene layers anchored onto the silicon surface accommodate the volume expansion of silicon via a sliding process between adjacent graphene layers. When paired with a commercial lithium cobalt oxide cathode, the silicon carbide-free graphene coating allows the full cell to reach volumetric energy densities of 972 and 700 Wh l−1 at first and 200th cycle, respectively, 1.8 and 1.5 times higher than those of current commercial lithium-ion batteries.