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68results about How to "Avoid lack" patented technology

Lithium iron phosphate battery positive electrode active material as well as preparation method and application

The invention relates to the technical field of lithium ion batteries, in particular to a lithium iron phosphate battery positive electrode active material capable of reducing the polarization effectof the lithium iron phosphate battery and improving the electrochemical (rate capacity) of the lithium iron phosphate battery as well as a preparation method and application. The active material is divided into two layers, i.e. a first layer of active material and a second layer of active material coating the surface of the first layer of active material; the first layer of active material is prepared from the following components in parts by weight: 80 to 95 parts of lithium iron phosphate positive electrode material, 3 to 12 parts of conducting agent, 3 to 10 parts of category-I binder; andthe second layer of active material is prepared from the following components in parts by weight: 85 to 98 parts of lithium iron phosphate positive electrode material, 1 to 8 pars of conducting agent,and 5 to 8 parts of category-II binder. The battery polarization of a double-layer lithium iron phosphate positive electrode material pole piece prepared by adopting the modification method disclosedby the invention is greatly reduced compared to that of the ordinary lithium iron phosphate pole piece containing the same conducting agent, so that the rate capacity of the lithium iron phosphate isapparently improved. Meanwhile, the circulating performance of the product is excellent.
Owner:QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI

Magnetic induction pad

The present invention provides a magnetic induction pad. The magnetic induction pad includes a deformation body and a plurality of magnetic induction modules. The interior of the deformation body includes a filling space that is in connection with the outside via at least one gas nozzle. The external of the deformation body includes a first surface and a second surface. The first surface and the second surface include a plurality of first bag bodies and a plurality of second bag bodies, respectively. The plurality of first bag bodies are mutually arranged to form a first pattern. The plurality of second bag bodies are mutually arranged to form a second pattern that are the same as the first patterns, so as to enable the position of each of the plurality of first bag bodies on the first surface to have a corresponding arrangement to each of the plurality of second bag bodies of the second surface. The plurality of magnetic induction modules includes a group of magnetic members and a group of induction members. The group of magnetic members and the group of induction members are respectively arranged at the corresponding positions within the plurality of first bag bodies and the plurality of second bag bodies. According to the magnetic theory, it enables the determination of whether a human body lies down on a bed, on the basis of the degree of compression of the magnetic induction pad between the plurality of magnetic induction modules.
Owner:CAREMED SUPPLY

Low-serum culture medium for high-density suspension culture of BHK-21 cells and application of low-serum culture medium in proliferation of FMDVs (foot and mouth disease viruses)

The invention discloses a low-serum culture medium for high-density suspension culture of BHK-21 cells and an application of the low-serum culture medium in proliferation of FMDVs (foot and mouth disease viruses). According to researches on the metabolism level and mutual adjustment of nutritional substances such as glucose and the like in the growth process of the BHK-21 cells, the low-serum culture medium for individual BHK-21 cells is provided and comprises an amino acid part, a vitamin part, a balanced salt part and other additive parts. The culture medium is used for high-density suspension culture of the BHK-21 cells, the effective utilization rate of the nutritional substances by the cells can be greatly increased, the concentration of metabolism byproducts is reduced, and accordingly, the cell culture efficiency is improved; besides, the BHK-21 cells cultured by the culture medium have increased sensitivity for different serums of animals suffering from FMDV, the content of effective antigens 146S of the viruses is substantially increased, the purposes of high cell growth efficiency, cell growth controllability and minimization of the concentration of the metabolism byproducts are achieved, the production efficiency of biological products is higher, the production cost is lower, and the low-serum culture medium has remarkable economic benefits.
Owner:CHINA AGRI VET BIO SCI & TECH +1
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