Samsung SDI partners with KG Mobility on silicon-carbon EV batteries

Samsung has indeed built a battery with a silicon–carbon anode, but it isn’t headed for smartphones. The technology was introduced by Samsung SDI, the company’s battery division, and it’s aimed squarely at electric vehicles rather than the Galaxy lineup. A pragmatic call: the biggest gains from higher energy density and safety are felt on the road.

Samsung SDI announced a partnership with South Korean automaker KG Mobility. Under the agreement, the two companies will co-develop EV battery modules based on 46-series cylindrical cells. They combine high‑nickel NCA cathodes with a proprietary silicon–carbon nanocomposite anode engineered for increased energy density and durability.

According to Samsung, the new approach reduces the risk of swelling, extends lifespan and improves safety. The packs also use a contactless architecture that lowers internal resistance and enhances conductivity—changes that translate into higher power output, faster charging and more effective thermal management compared with previous battery generations. In other words, the gains are not just theoretical; they are designed to be felt in everyday use.

The new battery packs are slated for future KG Mobility electric models. The companies have signed a memorandum of understanding and plan to work together on next‑generation batteries for electric transport.

While some Samsung phones already rely on batteries made by Samsung SDI, bringing the silicon–carbon technology to smartphones is still an open question. In theory, such cells could power future Galaxy devices, but the company isn’t sharing timelines or naming specific models—so fans will have to wait and see.