New catalyst helps Li-S battery keep 93% capacity after 600 cycles in tests

Researchers in China developed a solid-solution titanium-chromium nitride catalyst for lithium-sulfur batteries.

The catalyst more effectively traps and converts lithium polysulfides, speeding reactions and reducing the shuttle effect.

In testing, the battery retained 93% of its capacity after 600 charge-discharge cycles at 2 C.

The advance could improve lithium-sulfur battery durability and support lighter, cheaper, higher-energy storage for EVs and grid use.