45 results about "Electrolytes sodium" patented technology

The invention relates to a marine polysaccharide multilayer composite packaging film with an antibacterial function and a preparation method thereof, belonging to the fields of high polymer materials and food package. The marine polysaccharide multiplayer composite packaging film is prepared by forming a three-layer polyelectrolyte composite film by utilizing the static function of polycation electrolyte chitosan and polyanion electrolyte sodium alginate, and adding natural germicide, i.e. clove oil, to a middle film layer. The preparation method of the packaging film is simple; and the obtained packaging film has favorable mechanical performance, is superior to a low-density polyethylene film, can meet common requirements of food package, has favorable antibacterial controlled-release performance, can effectively prolong the shelf life of foods and can be used for fresh-keeping packaging of various foods, such as meat, cut fruits and vegetables, and the like.

The invention discloses a non-aqueous organic electrolyte containing sodium bis(fluorosulfonyl)imide. The non-aqueous organic electrolyte comprises electrolyte salt and an organic solvent, wherein the electrolyte salt is sodium bis(fluorosulfonyl)imide. The invention also discloses a sodium ion battery. The improvement of the sodium ion battery provided by the invention is characterized in that the sodium bis(fluorosulfonyl)imide is used as the electrolyte salt. The prepared sodium ion battery has the advantages of low cost, long cycle life, high energy density and the like, can be widely applied in large-scale energy storage equipment needed for solar energy and wind power generation, as well as the fields of intelligent power grid peak shaving, distributed power stations, standby power supplies, communications base stations and the like, and is especially suitable for being used as large-scale energy storage equipment.

The invention discloses a preparation method of nanometer fibrillated cellulose capable of being re-dispersed in water after drying, and belongs to the technical field of nanometer cellulose preparation. According to the present invention, nanometer fibrillated cellulose is physically modified with an anionic polymer electrolyte sodium carboxymethyl cellulose, and the obtained nanometer fibrillated cellulose and sodium carboxymethyl cellulose mixed solution is dried by an experimental fluidized bed granulator and a freeze drying machine to prepare powdery or microparticle-like nanometer fibrillated cellulose solid, wherein the nanometer fibrillated cellulose solid can be uniformly re-dispersed in an aqueous medium due to the weakening of the agglomeration caused by hydrogen bonding; and the preparation of the re-dispersible nanometer fibrillated cellulose provides convenience in storage, transportation and subsequent applications.

The invention relates to the field of organic electrochemistry synthesis technology, and in particular relates to a method for synthesizing tetrapion by an electric catalytic membrane. The method is characterized by synthesizing the tetrapion in a way of integrating reaction and separation. The invention has the technical scheme that the titanium-based electric catalytic membrane is taken as an anode, and an auxiliary electrode is a cathode to form an electric catalytic membrane reactor; the reactant or feed liquid is mixed water solution of tetrafluoropropanol and sodium salt; under the condition with certain working voltage and current density, the tetrafluoropropanol is converted into an intermediate product tetrafluoropropanoic acid by catalytic oxidation on the surface of the membrane; then, the tetrafluoropropanoic acid and electrolyte sodium salt in the feed liquid have reaction, so that the tetrapion can be generated; meanwhile, a peristaltic pump is used for sucking under the condition with a certain membrane permeation flux; the reactant tetrafluoropropanol can be separated from the product tetrapion in real-time in an on-line way; and the pH value is adjusted to be about 7-8 by collecting membrane permeation liquid, and obtaining the tetrapion product by concentration. Compared with the traditional technology, the method has the advantages of being efficient and environment-friendly, being high in selectivity and simple in operation and the like, thus being suitable for industrialized implementation; and a new method is provided for preparing the efficient herbicide tetrapion and the method has wide application prospects.

The invention discloses an antifriction anti-wear composite material and a preparation method thereof. The antifriction anti-wear composite material is composed of polyethylene with an ultra-high molecular weight and sodium polyacrylate with an ultra-high molecular weight; and the method comprises the steps of firstly selecting the polyethylene powder with the ultra-high molecular weight and the sodium polyacrylate powder with the ultra-high molecular weight, performing drying, performing mixing to form mixed powder, placing the mixed powder in a mold, performing pre-pressing on the mixed powder by using a hot press, and performing a hot pressing forming process by the hot press to obtain the antifriction anti-wear composite material. According to the method provided by the invention, theprinciple that charge repulsion happens between ions generated by hydrolysis of the electrolyte sodium polyacrylate and free ions in seawater is utilized, so that loss of materials is reduced, the tribological properties of the polyethylene with the ultra-high molecular weight are increased, and finally the antifriction anti-wear composite material used for marine equipment is obtained; and the friction coefficient, the wear scar depth and the wear scar width of the antifriction anti-wear composite material under the seawater environment are greatly reduced.

The invention provided a sodium ion rechargeable battery that can exhibit a very stable potential during the repetition of charge and discharge. The invention also provided a negative electrode active material used for the sodium ion rechargeable battery that can achieve efficient doping and de-doping of sodium ions for use in the sodium ion rechargeable battery. The sodium ion rechargeable battery comprises a positive electrode, a negative electrode and an electrolyte containing sodium ions. The positive electrode comprises a positive electrode active material that can dope and de-dope the sodium ion. The negative electrode comprises a negative electrode active material containing, as a simple substance or as a main component, a vitreous carbon material that can dope and de-dope the sodium ion. In addition, the negative electrode active material for a nonaqueous electrolyte sodium ion rechargeable battery contains a vitreous carbon material as a simple substance or a main component.

The invention discloses an environmental protection system for treating industrial waste water by an electrolysis method. The environmental protection system comprises a sedimentation tank, a filtering device, a disinfection tank and an adsorption device; an electrolyte tank is arranged between the sedimentation tank and the filtering device through a liquid conveying pipeline; an electrolyte sodium chloride is arranged in the electrolyte tank; two rectangular electrodes are arranged in the electrolyte tank; a water absorption pipe extends to the central position of an electrolyte sodium chloride liquid; a soft water tank communicates with a reverse osmosis filtering device through a liquid conveying pipeline; and the electrolyte tank, the disinfection tank and the soft water tank respectively convey a coagulant, a disinfectant and a softening agent through a first reagent adding device, a second reagent adding device and a third reagent adding device. In the system, harmful substancesare rapidly and efficiently separated out from industrial wastewater through electrolysis of the electrolyte, and the harm to the natural environment is reduced on a large scale after the discharge of the treated wastewater. In addition, the environmental protection system provided by the invention is low in cost, high in efficiency and simple in operation and is worthy of promotion.

The invention discloses a method for treating desulfurization wastewater by electrolysis. The method comprises the following steps of: (1) feeding the desulfurization wastewater into an open diaphragm-free electrolytic cell, electrifying direct current to a titanium-based coating electrode which is used as a positive electrode and a stainless steel plate which is used as a negative electrode, and electrolyzing and stirring the desulfurization wastewater; and (2) adding polyacrylamide into the water treated in step (1) for flocculation. According to the method, the desulfurization wastewater with a high chemical oxygen demand (COD) is treated by electrolysis; the desulfurization wastewater contains a great amount of chloride, the chloride ion concentration is generally 8000-20000mg / L, and electrolyte sodium chloride is not required during electrolysis; in the process of electrolysis, oxygen and chlorine are released on the positive electrode; and being new ecological, the released oxygen and chlorine have strong oxidation capacity, so that the organic matters in the wastewater can be decomposed as a result of intense oxidation.