All-solid-state lithium–sulfur batteries demonstrate great promise for next-generation electrochemical energy storage, but the low electronic conductivity of sulfur poses a major challenge. Here, the authors analyze carbon–sulfur composites formed by melt diffusion and demonstrate that the enhanced contact between carbon and sulfur results in higher electronic conductivity and a high specific capacity for an all-solid-state lithium–sulfur cell.
- Hiroshi Yamaguchi
- Yu Ishihara
- Koji Ohara