The experimental evidence of diffusion of I2 along the SE particle surface and the occurrence of the reaction between I2 as redox mediator and Li2S. Credit: Nature (2025). DOI: 10.1038/s41586-024-08298-9 An international team of engineers and materials scientists has developed a lithium-sulfur battery capable of retaining 80% of its charge capacity after 25,000 cycles. Their paper is published in the journal Nature. To make batteries smaller and lighter, engineers continually look for new materi...