148 results about "High electrolytes" patented technology

The present invention relates to cathodes used in electrochemical cells. A force, or forces, applied to portions of an electrochemical cell as described in this application can reduce irregularity or roughening of an electrode surface of the cell, improving performance. The cathodes described herein may possess enhanced properties that render them particularly suitable for use in electrochemical cells designed to be charged and / or discharged while a force is applied. In some embodiments, the cathode retains sufficient porosity to charge and discharge effectively when a force is applied to the cell. Cathodes described herein may also comprise relatively high electrolyte-accessible conductive material (e.g., carbon) areas. The cathode may comprise a relatively low ratio of the amount of binder and / or mass of electrolyte to cathode active material (e.g., sulfur) ratio in some instances. In some embodiments, electrochemical cells comprising the cathodes described herein may achieve relatively high specific capacities and / or relatively high discharge current densities. In addition, the cathode described herein may exhibit relatively high cathode active material (e.g., sulfur) utilization during charge and discharge. In still further cases, the electrical conductivity between conductive material in the cathode (e.g., carbon) may be enhanced during the application of the force.

A battery separator comprising a nonwoven fabric, wherein the nonwoven fabric contains (1) superfine fibers having a fiber diameter of 3 μm or less, (2) noncircular fine fibers having a noncircular cross-sectional shape and having a fiber diameter of 3 to 5 μm (excluding 3 μm), the fiber diameter meaning a diameter of a circle having an area the same as that of the noncircular cross-sectional shape, and (3) polypropylene based high-strength composite fibers containing a fusible component on the surface thereof and having a tensile strength of 4.5 cN / dtex or more, and the fusible component contained in the polypropylene based high-strength composite fibers is fused, and a battery comprising the battery separator are disclosed. A battery separator of the present invention has a high electrolyte-holding capacity and is capable of effectively preventing a short circuit, even if the separator is designed to be thinner to enhance the capacity of a battery.

Clear, or translucent fabric softener compositions comprise fabric softener compound, principal solvent system, and high electrolyte levels. The high electrolyte level allows for a broader range of principal solvents to be used and / or reduces the incidence of increased viscosity when low levels of principal solvent are used. Phase stabilizers which are primarily ethoxylated hydrophobic materials can be used to reduce the amount of principal solvent that is needed and / or to stabilize the compositions in the presence of the highest levels of electrolyte. Specific phase stabilizers provide additional benefits including improved softening. Specific electrolytes provide improved results. Addition of primary solvents and / or phase stabilizers to the softener compounds can improve the viscosity / handling of the compounds and the ability to create the finished compositions.

The invention discloses a corrosion resistant aluminum plastic film for lithium battery packaging, which mainly comprises a protective layer, an aluminum foil layer and a heat-seal layer. The corrosion resistant aluminum plastic film is characterized in that: the protective layer and the aluminum foil layer are bonded and combined by a cementing layer, the aluminum foil layer and the heat-seal layer are combined by hot pressing; the aluminum foil layer is subjected to surface treatment by adopting anodic oxidation before bonding combination and hot pressing combination; the material of the heat-seal layer is a three-layer co-extrusion polyolefin composite membrane, of which the inner layer is a bonding layer, the middle layer is a structural layer and the outer layer is a blocked layer; the thickness of the protective layer is 10 to 50mu m, the thickness of the aluminum foil layer is 20 to 80mu m and the thickness of the heat-seal layer is 20 to 120mu m. The product, the aluminum plastic film, has the advantages of higher electrolyte resistance property, and package bonding power, and is suitable for high performance lithium battery packaging.

The invention provides a flow injection type high speed electrolyte analysis apparatus. The electrolyte analysis apparatus which comprises a sample and standard solution supply device, connecting pipelines, an ion selective electrode set, and a measure circuit which is connected with the ion selective electrode set and also comprises a rotary sampling valve is characterized in that: a first inlet of the rotary sampling valve is communicated with an output pipeline of the sample and standard solution supply device; a second inlet of the rotary sampling valve is communicated with a carrier liquid container; a peristaltic pump for pumping a carrier liquid is arranged between the second inlet of the rotary sampling valve and the carrier liquid container; a first outlet of the rotary sampling valve is communicated with the ion selective electrode set; a second outlet of the rotary sampling valve is communicated with a waste water container; and a peristaltic pump for pumping a sample and a standard liquid is arranged between the second outlet of the rotary sampling valve and the waste water container. The electrolyte analysis apparatus of the present invention has the advantages of simple structure, fast analysis speed, and improvement of the accuracy and the speed of electrolyte analysis.

Clear, or translucent fabric softener compositions comprise fabric softener compound, principal solvent system, and high electrolyte levels. The high electrolyte level allows for a broader range of principal solvents to be used and / or reduces the incidence of increased viscosity when low levels of principal solvent are used. Phase stabilizers which are primarily ethoxylated hydrophobic materials can be used to reduce the amount of principal solvent that is needed and / or to stabilize the compositions in the presence of the highest levels of electrolyte. Specific phase stabilizers provide additional benefits including improved softening. Specific electrolytes provide improved results. Addition of primary solvents and / or phase stabilizers to the softener compounds can improve the viscosity / handling of the compounds and the ability to create the finished compositions.

Precipitated silica comprising porous silica particles having a cumulative surface area for all pores having diameters greater than 500 Å of less than 6 m2 / g, as measured by mercury intrusion, and a percentage cetylpyridinium chloride (% CPC) Compatibility of greater than about 85%. The precipitated silica product is especially well-adapted for use in dentifrices containing cetylpyridinium chloride, which do not attach to the low surface area silica product in a meaningful level and thus remain available for antimicrobial action. Processes for making the silica product including the introduction of sodium sulfate powder during different process steps in order to enhance such a compatibility with CPC are provided.

The graphitized cathode carbon block for aluminum electrolytic bath is prepared with material comprising binder 21-25 wt%, petroleum coke and / or asphalt coke 73-77 wt%, Fe2O3 powder 0.5-1.5 wt% and stearic acid 0.5-1.5 wt%, and through graphitizing treatment. The graphitized cathode carbon block has thermal conductivity coefficient as high as 80 W / m.K, and is favorable to heat dissipation of electrolytic bath bottom and especially suitable for use as cathode lining of large electrolytic bath. The graphitized cathode carbon block has electric resistivity lower than 14 microohm.m and is favorable to lowering cathode voltage drop and saving electric energy. In addition, the graphitized cathode carbon block has low electrolytic expansion rate and high electrolyte corrosion resistance and is favorable to prolonging the service life of electrolytic bath.

The present invention relates to a highly wettable separator for a secondary battery, and provides a highly wettable separator for a secondary battery, the separator comprising: a polyolefin-based substrate; a hot melt nanofiber layer formed on one surface or both surfaces of the substrate; and a nanofiber layer with high electrolyte wettability, the nanofiber layer being formed on the hot melt nanofiber layer, wherein the coating amount of the hot melt nanofiber layer is 0.05-2.5 g / m2 and the layer with high electrolyte wettability has a porosity of 55-89%. The separator according to the present invention can exhibit a shutdown function while having excellent heat resistance and high mechanical strength, and can exhibit excellent ion conductivity and prevent deterioration in battery performance by having excellent pore size and porosity.

The invention relates to a preparation method of a semi-spherical active carbon electrode material of a super capacitor, which comprises the steps of: 1, dissolving glucose into deionized water, adding a foaming agent, after completely dissolving and fully mixing, transferring to a high-pressure kettle, and hydrothermally reacting at a temperature of 90-160 DEG C for 5-9h, wherein the mass ratio of the glucose to the foaming agent is 10:1-5; and washing a product, filtering and drying for carbonizing at a temperature of 700-850 DEG C for 3-5h under the protection of a reducing atmosphere, naturally cooling and then grinding to obtain semi-spherical active carbon. The invention has the advantages of simple steps, mild reaction conditions, increased pore diameter of the semi-spherical active carbon material, improved migration property of electrolyte ions and capability of effectively improving the power density of the super capacitor.

The separator for storage battery of the present invention is a separator for storage battery mainly composed of microfibrous glass and an expanded microcapsule which has been kept in shape with its shell rendered water-permeable by expansion is incorporated in the aforesaid microfibrous glass so that an electrolyte can be retained in the gap between the glass fibers and in the expanded microcapsule to provide a high electrolyte retention and allow the aforesaid expanded microcapsule to act as a cushioning material, whereby the separator is provided with an enhanced restoring force under pressure and is thus kept the adhesion to the electrode over an extended period of time, making it possible to attain the enhancement of the storage battery capacity and the prolongation of its life and apply only a low pressure to incorporate the electrode group in the battery case during assembly of storage battery.

The present invention relates to a negative electrode active material and a method of preparing the same, the negative electrode active material which includes a core including artificial graphite and hard carbon, and a shell surrounding the core and including natural graphite, wherein the shell is shell is formed to cover a surface of the core by stacking and heading the natural graphite. Since the natural graphite completely surrounds the artificial graphite and the hard carbon, the hard carbon having a low initial efficiency and high electrolyte solution consumption is not exposed to the outside, and thus, high initial efficiency and life characteristics may be obtained. Also, since the natural graphite, the artificial graphite, and the hard carbon are all used, diffusion resistance of lithium ions is lower than that of a case where the natural graphite is only used, and thus, high output characteristics may be achieved.

A phosphorus-acid-group-containing (meth)acrylamide polymer having high electrolytic group density and excellent conductivity is obtained by introducing a phosphorus acid group into a (meth)acrylamide monomer which may be N-substituted, and polymerizing the resultant monomer. This polymer is usable for conductive resins, proton-conductive polymer electrolyte membranes and coating agents.