Electrocatalysts design to improve SRR kinetics in Li||S batteries. Credit: Nature Nanotechnology (2024). DOI: 10.1038/s41565-024-01614-4 Lithium–sulfur (Li–S) batteries are a promising alternative to lithium–ion batteries (LiBs), the most common rechargeable battery technology. As sulfur is abundant on Earth, these batteries could be cheaper and more environmentally friendly than LiBs, while also potentially exhibiting higher energy densities. Despite these advantages, the deployment of Li–S ba...