400 results about "Propane sultone" patented technology

The invention relates to the technical field of lithium ion batteries, in particular to a ternary cathode material lithium ion battery and an electrolyte thereof. The electrolyte comprises a non-water-based organic solvent, lithium salt and an additive. The additive comprises 1,3-propane sultone, a compound with the structural formula I or II, and a compound containing an M-O-Si functional group. M is any one of B, C, N, P, S and Al. Compared with the prior art, the ternary cathode material lithium ion battery with the electrolyte can normally work within the range of high voltage of 4.4 V or above, rise of internal resistance of the battery is restrained when the battery is used in high-pressure and low-temperature environments, the high-temperature storage performance and a low-temperature discharging platform of the battery are effectively improved, and excellent circulation performance and storage performance can be achieved within the wide temperature range.

The invention discloses power lithium ion battery electrolyte and a power lithium ion battery. The power lithium ion battery electrolyte is prepared from a non-aqueous organic solvent, lithium salt, an additive A and an additive B, wherein the additive A is selected from at least one of difluoro lithium phosphate, difluoro sulfimide lithium and lithium difluoroborate, and the additive B is selected from at least one sulfide which has a first structural formula or a second structural formula or a third structural formula. According to the power lithium ion battery electrolyte, the additive A or the additive B with low impedance is blended, meanwhile, the dosages of high-impedance additives including vinylene carbonate, 1,3-propane sultone and the like are controlled, and an SEI (Solid Electrolyte Interface) membrane with low impendence and a stable structure can be formed on the surface of an electrode; the prepared power lithium ion battery has the advantages of long cycle life, high energy density, high output power, good low-temperature performance and the like.

The invention provides a power battery and a lithium ion electrolyte thereof. The lithium ion electrolyte comprises a non-aqueous organic solvent, lithium salt and an additive, wherein the additive comprises a first additive and a second additive, and the first additive comprises silane sulfate; the first additive accounts for 0.05 to 10% of the total weight of the electrolyte, and the second additive is an auxiliary additive and comprises one or more of vinylene carbonate, propane sultone, fluoroethylene carbonate, vinyl ethylene carbonate, ethylene sulfite, adiponitrile, and succinic anhydride in any proportion; the second additive accounts for 0.1-5wt% of the total weight of the electrolyte, and the non-aqueous organic solvent is a carbonic ester solvent, a carboxylic ester solvent, an ether solvent or a ketone solvent; and the lithium salt comprises primary lithium salt and secondary lithium salt.

The present invention relates to additives for electrolytes of lithium ion secondary batteries that include one or more of the following: 1,3-propane sultone, succinic anhydride; ethenyl sulfonyl benzene, and halobenzene. It can also include biphenyl, cyclohexylbenzene; and vinylene carbonate. The weight of said 1,3-propane sultone is between 0.5 wt. % and 96.4 wt. %, said succinic anhydride is between 0.5 wt. % and 96.4 wt. %; said ethenyl sulfonyl benzene is between 0.5 wt. % and 95.2 wt. %; and said halobenzene is between 0.5 wt. % and 95.2 wt. % of the weight of the additive. Batteries with electrolytes containing said additives have improved over-charge characteristics and low temperature properties, and reduced gas generation during charging and discharging.

The invention provides a lithium ion secondary battery and an electrolyte thereof. The electrolyte of the lithium ion secondary battery comprises lithium salt, a non-aqueous solvent, and an addition agent at least containing 1, 3-propane sultone (PS), fluoroethylene carbonate (FEC) and an s-triazine structural compound, wherein the s-triazine structural compound is represented by a general formula (1), a general formula (2) or a general formula (3); in the general formula (1), the general formula (2) or the general formula (3), n is an integral number of 0-5, and R1, R2 and R3 are hydrogen atoms or C1-C6 alkyl group; and the hydrogen atoms on the alkyl group can be partially or wholly replaced by fluorine atoms. The lithium ion secondary battery comprises a positive plate, a negative plate, a diaphragm arranged between the adjacent positive plate and the negative plate, and the electrolyte of the lithium ion secondary battery. According to the lithium ion secondary battery and the electrolyte thereof provided by the invention, oxidation reaction between the electrolyte and a cathode material can be inhibited, and the cycle performance under the conditions of high temperature and high voltage is improved.

A rechargeable lithium cell comprising a cathode, an anode, a non-flammable quasi-solid electrolyte containing a lithium salt dissolved in a mixture of a liquid solvent and a liquid additive having a salt concentration from 1.5 M to 5.0 M so that said electrolyte exhibits a vapor pressure less than 0.01 kPa, a vapor pressure less than 60% of the vapor pressure of the liquid solvent alone, a flash point at least 20 degrees Celsius higher than the flash point of the liquid solvent alone, a flash point higher than 150° C., or no flash point, wherein the liquid additive is selected from Hydrofluoro ether (HFE), Trifluoro propylene carbonate (FPC), Methyl nonafluorobutyl ether (MFE), Fluoroethylene carbonate (FEC), Tris(trimethylsilyl)phosphite (TTSPi), Triallyl phosphate (TAP), Ethylene sulfate (DTD), 1,3-propane sultone (PS), Propene sultone (PES), Diethyl carbonate (DEC), Alkylsiloxane (Si—O), Alkylsilane (Si—C), liquid oligomeric silaxane (—Si—O—Si—), Tetraethylene glycol dimethylether (TEGDME), or a combination thereof.

The invention provides a lithium-ion battery and an electrolyte thereof. The electrolyte of the lithium-ion battery comprises a lithium salt and a non-aqueous solvent and at least comprises 1,3-propane sultone, fluorinated ethylene carbonate and a pyrimidine-structural compound additive. The lithium-ion battery comprises a positive pole piece, a negative pole piece, a diaphragm spaced between the positive pole piece and the negative pole piece which are adjacent, and an electrolyte, wherein the electrolyte is the electrolyte of the lithium-ion battery provided by the invention. According to the lithium-ion battery and the electrolyte thereof, provided by the invention, the oxidation reaction between the electrolyte and a positive-pole material can be inhibited, so that the cycle performance under the conditions of high temperature and pressure is improved.

The invention relates to a lithium iron phosphate battery with lithium ion battery electrolyte suitable for ultralow-temperature charging and discharging. The lithium ion battery electrolyte comprises lithium salt, a multi-element organic solvent and additives, wherein the additives comprise a low-melting-point additive, a film forming additive and a high-temperature additive; the multi-element organic solvent contains at least three of ethylene carbonate, diethyl carbonate, dimethyl carbonate, methyl ethyl carbonate, propylene carbonate and butylene carbonate; the low-melting-point additive contains at least one of 4-methyl-1,3-dioxolane, methyl acetate, methyl propionate, methyl butyrate, ethyl butyrate, propyl butyrate and butyl acetate; the high-temperature additive is at least one of methyl ester, di-n-propyl carbonate and 1,3-propane sultone. The lithium iron phosphate battery with the electrolyte can charge and discharge at an ultralow temperature and in a high-temperature environment, and is stable in performance and long in recycling life.

The invention discloses a low-temperature type carbonic ester lithium battery electrolyte. The electrolyte mainly comprises the following components: ethylene carbonate, dimethyl carbonate, ethyl methyl carbonate and propylene carbonate as solvents, lithium hexafluorophosphate and a low temperature additive. The four carbonic ester solvents are in the following weight ratio: EC: DMC: EMC: PC=2:3:5:1; the components are prepared into an 1 mol / L electrolyte containing LiPF6, four carbonic ester solvents, the low temperature additive; and the low temperature additive is one selected from polydimethylsiloxane, 1,3- propane sultone, and vinylene carbonate, or a combination thereof. According to the invention, optimization of composition of the carbonic ester solvents and addition of the low temperature additive are employed to increase solubility, degree of dissociation and conductivity of the electrolyte, improve structure of a solid phase interfacial film (SEI membrane) of the lithium ion battery cathode, the integral stability of the battery and battery cycling and prolong usage life. Especially, the invention provides a mainstream electrolyte for lithium ion power batteries used in a lowest temperature of -50 DEG C in most regions in northern China.

Disclosed is a lithium secondary battery comprising a cathode, an anode, an electrolyte and a separator, wherein the anode comprises an anode active material having a specific surface area of 3 m²/g or less, and the electrolyte comprises 0.1˜6 parts by weight of a propane sultone-based compound based on 100 parts by weight of the electrolyte. The lithium secondary battery solves the problem of performance degradation caused by the use of an increased amount of a propane sultone-based compound required to form a SEI film on the surface of an anode upon the first charge cycle. Also, the lithium secondary battery can provide improved cycle characteristics and high-temperature storage characteristics.

The invention relates to the technical field of lithium ion batteries, in particular to a nonaqueous electrolyte for a secondary lithium ion battery, which is prepared by adopting an organic solvent containing at least one cyclic carbonate and one linear carbonate, wherein the cyclic carbonate comprises ethylene carbonate (EC) and propylene carbonate (PC), the linear carbonate comprises ethyl methyl carbonate (EMC), diethyl carbonate (DEC) or a solvent system formed by any of the EMC and the DEC, and lithium hexaflourophosphate is used as the electrolyte. The nonaqueous electrolyte is characterized in that nitriles (NC-R-CN) are simultaneously added, wherein R is alkyl, C is 2-6, vinylene carbonate (VC), fluoroethylene carbonate (FEC) and 1,3-propane sultone (PS) are used as additives, and the weight percents of all additives are regulated. A battery adopting the nonaqueous electrolyte has excellent high-temperature property and circulating property.

The invention discloses an amphoteric ionic Gemini surfactant shown in a structural general formula (I), which is characterized in that R is alkyl of CnH2n +1, and n is equal to the integer of 418. The surfactant takes fatty acid as a raw material, and the fatty acid is reduced to obtain alpha-bromo fatty alcohol through alpha-bromo; and the alpha-bromo fatty alcoho is reacted with propane sultone to obtain alpha-bromo alkoxy propane sulfate, and finally, the alpha-bromo alkoxy propane sulfate is reacted with tetramethylethylenediamine to obtain the amphoteric ionic Gemini surfactant. The surfactant has higher surface activity, excellent synergetic property, excellent soft smoothness and antistatic property for fabrics, good wetting and foaming properties, and good absorption property for the surface of the charged material, and does not produce a water-repellent thin layer.

The invention relate to a leveling agent solution and a preparation method and application thereof. The leveling agent solution is obtained in the mode that a nitrogenous heterocyclic compound and a diepoxide compound are polymerized and then 1,3-propane sultone is used for an alkylation reaction. The leveling agent solution, a brightener and an inhibitor are used together, and a good electroplating effect can be obtained in electroplating of circuit board through holes.

The invention relates to the field of lithium batteries, disclosing an electrolyte which can be used to improve the performance of LiMn2O4 Li-ion battery, composed of ethylene carbonate, methyl ethyl carbonate, diethyl carbonate, propylene carbonate, 1,3-propane sultone, lithium hexafluorophosphate and lithium bis(oxalate)borate. During battery formation, the film forming additive forms a stable high-temperature resisting passivating film (SEI film) on the surface of the electrode, and the film is capable of restraining the reaction between the battery anode (mainly composed of LiMn2O4) and the electrolyte, reducing Mn-ion dissolution and alleviating the capacity attenuation of the battery during the cyclic process.

The invention provides a preparation method of 1, 3-propane sultone with low cost, environment protection and easy industrialization. The invention synthesizes the intermediate 3-hydroxy-1-propanesulfonic acid under the catalytic reaction of nitrogen, n-butanol is used for extraction and separation of the intermediate, the molecular distillation technology is used for reaction and separation under the lower temperature and higher vacuum condition so as to synthesize the 1, 3-propane sultone. The method of the invention can fully and effectively convert the raw materials into the target product, which can avoid the formation of the by-products; furthermore, the reaction and separation become economic and efficient, the yield of the product is high, the purity is high, the invention is economic and environment protective as well as is easy in the realization of industrialization.

The present invention relates to electrolyte of a high-voltage lithium-ion battery, comprising a non-aqueous organic solvent, lithium salt and an electrolyte additive; the electrolyte additive comprises the following ingredients based on the total weight of the electrolyte: 1%-10% of fluoroethylene carbonate, 1%-5% of dinitrile compound and 0.1%-2% of 2-methyl maleic anhydride; further, the electrolyte can be further added with additives such as 0.2%-2% of lithium bisoxalatoborate and 1,3-propane sultone. The present invention also relates to a high-voltage lithium-ion battery using the electrolyte, with the charging cut-off voltage being greater than 4.2V and smaller than or equal to 4.5V. The electrolyte of the high-voltage lithium-ion battery provided by the present invention can protect the positive electrode and also form good SEI at the negative electrode, and the high-voltage lithium-ion battery has good cycle performance and storage performance.

The invention relates to a preparation method of hydrogel with high self-repairing capacity and high electric conductivity. The method comprises steps as follows: (1) 4-vinylpyridine is dissolved in an acetone solution, and then 1,3-propane sultone is dissolved in acetone and slowly dropwise added to the acetone solution of 4-vinylpyridine at 0-30 DEG C under the protection of nitrogen; the mixture is subjected to a stirring reaction for 3-5 d after addition; after the complete reaction, filtration is performed, a filter cake is washed with acetone; 3-(4-vinyl-1-pyridine)allyl sulfonate is obtained after vacuum drying; (2) 3-(4-vinyl-1-pyridine)allylsulfonate, sodium p-styrenesulfonate and 2-acrylamide-2-methyl allyl sulfonate or acrylic acid are dissolved in water, then a crosslinking agent and a photoinitiator are added, polymerization is initiated under ultraviolet irradiation, and hydrogel is prepared. The polyion liquid gel shows excellent electrochemical performance, has ion electric conductivity as high as 1.53 Sm<-1> at the room temperature and has excellent mechanical properties, and the electrochemical performance can be kept stable under different deformation conditions.

A nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode having a negative electrode active material, and a separator containing an electrolyte. The electrolyte includes an electrolyte salt, a nonaqueous solvent into which the electrolyte salt can be dissolved, a first additive selected from predetermined oxalate compounds and disulfonic acid ester compounds, and a second additive that has a reduction potential less than the reduction potential of the first additive. The second additive is selected from a group having vinylene carbonate, fluoroethylene carbonate, vinyl ethylene carbonate, 1, 3-propane sultone, 1, 4-butane sultone, 1, 3-propene sultone, succinonitrile, and adiponitrile.

The invention provides an acid-base bifunctional metal organic skeletal catalyst and a preparation method and an application thereof. The preparation steps are as follows: zirconium salt and 2-aminaterephthalic acid are dissolved in weakly acidic solution, and the obtained mixed solution is uniformly dispersed under an ultrasonic condition, and reacts in water bath; after reaction, the product is filtered, collected and washed; after the washed product is immersed in low-boiling point solvent, filtration is carried out, vacuum drying is then carried out, and thereby a UiO-66-NH2 material is obtained; trichloromethane solution which contains 1,3-propane sultone is prepared, added with the prepared UiO-66-NH2 material and heated in water bath to react, and the prepared solid product is then centrifugally separated and washed by using Soxhlet extraction; the obtained solid material is put into a vacuum drying oven, and thereby the acid-base bifunctional metal organic skeletal catalyst is obtained. The process of preparing the product is simple, the preparation cost is low, the acid-base bifunctional metal organic skeletal catalyst is used in the preparation of 5-hydroxymethylfurfural by one-step catalysis of dextrose, the reaction progress is accelerated, and the reaction process is simplified.

The invention relates to a high-voltage lithium battery electrolyte. The high-voltage lithium battery electrolyte comprises a non-aqueous organic solvent, a lithium salt, an additive and a negative electrode film forming agent, wherein the negative electrode film forming agent is arbitrary one of or a combination of several kind of vinylene carbonate, vinylethylene carbonate, 1,3-propane sultone or fluoroethylene carbonate. The high-voltage lithium battery electrolyte has an effect of protecting an electrode, the compatibility of the electrolyte and a high-voltage battery material is improved, and the cycle performance of a battery is greatly improved; and meanwhile, the promotion and the application of a high-energy-density lithium ion battery are also convenient, and the high-voltage lithium battery electrolyte has important significance to development of a power battery with high safety, high energy density and long cycle lifetime.

The invention discloses electrolyte of a lithium ion battery taking lithium titanate as cathode. The electrolyte comprises the organic solvent, lithium salt and additive dissolved in the organic solvent; the additive comprises one or the combination of the adiponitrile, butanedinitrile, 1,3-propane sultone, wherein the additive further comprises one or the combination of the cyclic acid anhydride and/or the derivate thereof, the total weight of the additive is 1-10% of the weight of the electrolyte, the weight of the cyclic acid anhydride and/or the derivate thereof, is 0.01-1% of the weight of the electrolyte. The additive comprises the cyclic acid anhydride and/or the derivate which have chemical reaction with the water in the battery, the combination water in the lithium titanate material, the water, the hydroxy and other groups for generating one component of the electrolyte, the defect that the water cannot be removed totally in the conventional vacuum baking process is compensated. The catalytic reaction for the hydroxy can be effectively avoided while having reaction with the Ti-OH bond on the surface of the lithium titanate particle, and the high temperature storage performance and the high temperature circulation performance of the lithium titanate battery are improved.