Sulfur-containing composite for lithium-sulfur battery, a process for preparing said composite, and the electrode material and lithium-sulfur battery comprising said composite
AssigneesRobert Bosch GmbH, Institute of Chemistry, Chinese Academy of Science
InventorsYaxia Yin, Longjie Zhou, Bernd Schumann, Juan Zhang, NaHong Zhao, Yuguo Guo, Huan Ye
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Abstract
The present invention relates to a sulfur-containing composite with a core-shell structure for lithium-sulfur battery, wherein the substrate of the core contains macropores and/or mesopores and optionally micropores, and the substrate of the shell is a microporous coating layer; as well as a process for preparing said sulfur-containing composite, an electrode material and a lithium-sulfur battery comprising said sulfur-containing composite.
Claims19
A sulfur-containing composite with a core-shell structure, wherein the substrate of the core contains macropores and/or mesopores and optionally micropores, and the substrate of the shell is a microporous coating layer;
- wherein sulfur is loaded into said substrate of the core and optionally the shell;
- wherein the coating layer is a hydrothermal microporous carbon coating, wherein a carbon source for the coating is a carbohydrate selected from the group consisting of sucrose, D-glucose, fructose, and any combinations thereof, and wherein the substrate of the core is formed by using a silica template.
A process for preparing a sulfur-containing composite with a core-shell structure, including the steps of:
- a) providing a substrate of the core, which contains macropores and/or mesopores and optionally micropores;
- and then
- b) applying a microporous coating layer as the shell onto said substrate of the core, before or after
- c) loading sulfur into said substrate of the core and optionally the shell,
- wherein the coating layer is a hydrothermal microporous carbon coating, wherein a carbon source for the coating is a carbohydrate selected from the group consisting of sucrose, D-glucose, fructose, and any combinations thereof, and wherein the substrate of the core is formed by using a silica template.
Dependencies are inferred from the claim text.