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Sulfur Template Technology Allows Lithium Cells to Slim Again Mar 15, 2018

How the mobile phone, laptop computer, etc. are lighter and thinner, how does the electric vehicle have a longer cruising range of electricity...... 

The research team of Tianjin University Yang Quanhong innovatively put forward the “sulfur template method” through the design of high volume energy density lithium ion battery anode material. Finished graphene coated with active particles "tailored." With this technology, the future of lithium-ion batteries is expected to further "thin" and become more thin and durable. The latest issue of Nature News also published the research results online.

The increase in user portability requirements and the use of space limitations 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" becomes a problem that confronts scientific researchers in the field of energy storage. 

The carbon cage structure constructed of carbon nanomaterials is considered to be the main means to solve the problem of huge volume expansion when lithium is inserted into non-carbon anode materials such as tin and silicon. Accurate customization of carbon cage structure is the only way for industrialization of new high performance anode materials.

Prof. Yang Quanhong's research team assembled based on the graphene interface and invented a precise custom-made sulfur template technique for dense porous carbon cages. Using capillary evaporative densification strategies for graphene gels, it successfully solved the high density and porosity of carbon materials. 

The bottleneck problem of "can't have both" and succeeded in obtaining high-density porous carbon materials. The design concept of this "Gradually tailored" carbon cage structure based on graphene assembly can be expanded to the construction strategy of the universalized next-generation high-energy lithium ion batteries and electrode materials such as lithium-sulfur batteries and lithium-air batteries, thereby making the energy storage batteries promising. Realize "small volume" and "high capacity".