The Yang Quanhong research team of Tianjin University innovatively proposed the "sulfur template method". Through the design of the anode material for high-volume energy density lithium-ion batteries, the "tailor-made" coating of active particles by graphene was finally completed.

　　How can mobile phones and notebook computers be lighter and thinner, and how can electric vehicles have a longer range of power... The research team of Yang Quanhong of Tianjin University innovatively proposed the "sulfur template method". Complete the "tailor-made suit" of graphene wrapping active particles. With this technology, in the future, lithium-ion batteries are expected to further "slim down" and become thinner and more durable. The latest issue of "Nature Communications" also published the research results online.

　　The increasing demand for user portability and the limitation of use space require that today's lithium-ion batteries have a high volumetric energy density. Nanotechnology can make batteries "lighter", but due to the lower density of nanomaterials, "smaller" has become a problem facing researchers in the field of energy storage. The carbon cage structure constructed by carbon nanomaterials is considered to be the main means to solve the huge volume expansion problem of non-carbon anode materials such as tin and silicon when lithium is inserted. The precise customization of the carbon cage structure is the only way for the industrialization of new high-performance anode materials.

　　Professor Yang Quanhong’s research team invented a sulfur template technology for precise customization of dense porous carbon cages based on graphene interface assembly. Using the capillary evaporation densification strategy of graphene gel, it successfully solved the problem of high density and porosity of carbon materials. The bottleneck problem of "not having both hands" has successfully obtained high-density porous carbon materials. This "tailor-made" design idea of carbon cage structure based on graphene assembly can be extended to a universal next-generation high-energy lithium-ion battery, lithium-sulfur battery, lithium-air battery and other electrode materials construction strategies, so that energy storage batteries are expected Realize "small size" and "high capacity".