Cell phones, laptops, etc. How thinner and thinner, how electric vehicles have longer battery life ...... Yang Quanhong, Tianjin University research team innovatively proposed 'sulfur template', through the high volume energy density lithium-ion battery anode material design, the final Complete graphene wrapped around the active particles 'tailored' With this technology, the future of lithium-ion batteries is expected to further 'downsizing', become more thin and durable. The latest issue of "Nature Communications" also published the research results online.
The increasing demand for user portability and space constraints require today's lithium-ion batteries to have high volumetric energy densities. "Nanotechnology can make batteries lighter, but smaller because of the lower density of nanomaterials, A problem that scientists in the field can face is that the carbon cage structure constructed by carbon nanomaterials is considered as the main means to solve the problem of huge volume expansion when non-carbon anode materials such as tin and silicon are intercalated with lithium. Precise customization of the carbon cage structure is a new type The only way to industrialization of high performance anode materials.
Based on the graphene interfacial assembly, Professor Yang Quanhong invented the sulfur template technology for the precise customization of dense porous carbon cage. By utilizing the capillary evaporation densification strategy of graphene gel, the high density and porosity of carbon material Can not have both hands and feet, "the successful access to high-density porous carbon material. This graphene-based carbon cage structure 'tailored' design ideas can be extended to the next generation of universal high-energy lithium-ion battery and lithium Sulfur batteries, lithium-air batteries and other electrode materials, construction strategies, so that the energy storage battery is expected to achieve 'small size' 'high capacity'.
