New Battery Binders and Silicon‑Carbon Cells Promise Longer Range for EVs and Phones

Researchers in South Korea have created a dual‑acting hybrid polymer binder that combines spandex and poly(acrylic acid) to strengthen thicker lithium‑ion battery electrodes. Laboratory tests showed the binder nearly doubled adhesive strength compared with the conventional PVDF binder and improved lithium‑ion movement, leading to better performance and longer life in pouch‑type cells used for electric vehicles.

Separately, silicon‑carbon battery technology replaces part of the graphite anode with a silicon‑carbon composite, allowing higher energy density without increasing device thickness. The chemistry can extend daily phone usage and is being scaled for electric‑vehicle batteries, though actual charging speed and durability depend on system‑level design and thermal management.

Both advances aim to increase range and lifespan of electric vehicles and portable electronics while using existing manufacturing processes.