Graphene has high electronic conductivity, which is conducive to the transfer of electrons, and this material has a pore structure, which provides large lithium storage space and fast lithium-ion transmission channels. Since there is a framework between graphene sheets, which is carbonized from organic carbon source, it can effectively alleviate the volume change, and further prevent the damage to the structure during the charge and discharge process. This material is entitled to excellent recycle performance and is the negative electrode of the new generation material of lithium-ion battery.
Nanomaterials have quantum size effect, small size effect and surface effect. After nanometerization, hydrogen-storage alloys have many new thermodynamic and kinetic characteristics, such as activation performance significantly improved, higher hydrogen diffusion coefficient and excellent kinetic properties of hydrogen absorption and desorption. Nano hydrogen-storage materials usually have better performance than ordinary hydrogen-storage materials in terms of storage capacity, cycle life and hydrogenation-dehydrogenation rate. The increase in specific surface area and number of atoms on surface change the properties of metal, which are not found in blocky materials. Due to its small size, hydrogen is more likely to diffuse into metal to form interstitial solid solutions, and adsorption phenomenon is also more notable at the surface.
Bio-chemical products, normally obtained from microorganism fermentation, enzyme reaction or large-scale cultivation of animal and plant cells, are always aqueous solutions with low product concentration due to oxygen transfer limitation and cell size and product inhibition. It has complex components, such as giant molecule, small molecule, soluble, insoluble and chemical additives. These products are unstable, and easy to degrade chemically and microbiologically. Batch operation during the cultivation will also cause great biological variability. GenTech adopts the following separation and purification technologies to obtain biological products for pharmaceutical or food products from the above-mentioned fermentation, reaction or cultivation fluids.
