16 results about "Non aqueous electrolytes" patented technology

Provided herein hybrid organic-inorganic redox active materials and related composites, compositions, electrode materials, electrodes electrochemical cells, batteries, methods and systems, which, can be used as to provide high performance cathode active materials in high capacity, high energy density, safe, and long-lasting electrochemical cells and batteries when coupled with Li, Na, K, graphite, lithiated graphite, in situ lithiated graphite, silicon, lithiated silicon, in situ lithiated silicon, silicon-graphite, in situ lithiated silicon-graphite, hard carbon, sodiated hard carbon, graphite-silicone, lithiated graphite-silicon etc. anodes in non-aqueous electrolytes.

The present invention provides a non-aqueous electrolyte comprising a lithium salt, an organic solvent, and a compound of the following Chemical Formula 1 as an additive, r1 is any one selected from the group consisting of F, R, an alkyl group having 1 to 10 carbon atoms, which may be substituted with one or more fluorine atoms, an alkenyl group having 2 to 10 carbon atoms, which may be substituted with one or more fluorine atoms, an alkynyl group having 2 to 10 carbon atoms, which may be substituted with one or more fluorine atoms, OR'and OCOR '; and R'is any one selected from the group consisting of an alkyl group having 1 to 10 carbon atoms, which may be substituted with one or more fluorine atoms, an alkenyl group having 2 to 10 carbon atoms, which may be substituted with one or more fluorine atoms, and an alkynyl group having 2 to 10 carbon atoms, which may be substituted with one or more fluorine atoms, where in Chemical Formula 1 and R1, R1 represents an alkyl group having 1 to 10 carbon atoms, which may be substituted with one or more fluorine atoms, and R2 represents an alkyl group having 1 to 10 carbon atoms, which may be substituted with one or more fluorine atoms. R has a structure represented by the following Chemical Formula 2, and in Chemical Formula 2, Rx and Ry are each independently H or F. [Chemical Formula 1] and [Chemical Formula 2].

The present invention provides a non-aqueous electrolyte comprising a lithium salt, an organic solvent, and a compound represented by Formula 1, r1 is any one selected from the group consisting of R, a C1-10 alkyl group optionally substituted with at least one fluorine, a C2-10 alkenyl group optionally substituted with at least one fluorine, a C2-10 alkynyl group optionally substituted with fluorine, OR ', OCOR', and F, R 'is any one selected from the group consisting of a C1-10 alkyl group optionally substituted with fluorine, a C2-10 alkenyl group optionally substituted with fluorine, and a C2-10 alkynyl group optionally substituted with fluorine; r has a structure represented by formula 2, and in formula 2, Rx and Ry are each independently H or F. [Formula 1] [Formula 2]

Provided is a nonaqueous electrolyte solution for a lithium secondary battery, which includes: a lithium salt; a nonaqueous solvent; a compound represented by Chemical Formula 1; and a compound represented by Chemical Formula 2; wherein the volume ratio of the compound represented by Chemical Formula 1 and the compound represented by Chemical Formula 2 contained is 1:0.1 to 1:1.5. In addition, a lithium secondary battery having improved high-temperature storage safety is provided by containing the nonaqueous electrolyte solution for a lithium secondary battery.

An ultracapacitor that comprises a first electrode, a second electrode, a separator, a nonaqueous electrolyte, and a housing is provided. The first electrode comprises a first current collector electrically coupled to a first carbonaceous coating that comprises activated carbon particles having a first plurality of pores and the second electrode comprises a second current collector electrically coupled to a second carbonaceous coating that comprises activated carbon particles having a second plurality of pores. The separator is positioned between the first electrode and the second electrode. The nonaqueous electrolyte is in ionic contact with the first electrode and the second electrode and contains an ionic liquid comprising a cationic species and a counterion dissolved in a nonaqueous solvent. The first plurality of pores of the first carbonaceous coating has a median pore diameter size, the counterion has a median ionic radius size, and the ratio of the median pore diameter size of the first plurality of pores to the median ionic radius size of the counterion is about 0.5 to about 1.5. A module comprising at least two ultracapacitors, an energy reserve system for electronic latch assemblies, and a vehicle with an energy reserve system for electronic latch assemblies is also provided.

The present invention provides a positive electrode active material for a non-aqueous electrolyte secondary battery, which is composed of Li [Lix (Ni1-y-z-wCoyMnzMw) 1-x] O2 (M is one or more elements other than Li, Ni, Co, Mn, and O; 0.1 < = x < = 0.15, 0lt; y < = 0.4, 0 < = z < = 0.4; and 0 < = w < = 0.1), and when a DTG curve of a sample charged using lithium as a counter electrode is divided into a plurality of peaks, has a first peak and a second peak in a temperature range of 150 DEG C to 350 DEG C, wherein a top portion of the first peak shows a maximum DTG value and a top portion of the second peak shows a maximum DTG value in peaks appearing at a peak top portion at a temperature that differs from a temperature appearing at the top portion of the first peak by at least 20 DEG C, and the DTG value at the top portion of the first peak is 1 to 9 times the DTG value at the top portion of the second peak.

[Problem] To provide coated particles that, when used as a positive electrode active material for a non-aqueous electrolyte secondary battery, allow a non-aqueous electrolyte secondary battery in which these particles are used to exhibit excellent charge / discharge capacity and cycle characteristics. Coated particles according to the present disclosure have: a lithium metal composite oxide containing at least lithium and nickel in the form of primary particles or secondary particles; a first layer containing nickel (II) oxide on at least a part of the surface of the lithium metal composite oxide; and a second layer comprising an oxide on at least a portion of a surface of the first layer, the oxide containing lithium and one or more selected from the group consisting of boron, phosphorus, and sulfur.

An electrochemical CO2 reduction system includes a functionalized ionic liquid (IL) that generates ion-CO2 adducts and a hydrogen bond donor (HBD) upon CO2 absorption to modulate CO2 reduction reaction (CO2RR) on a Cu cathode in a non-aqueous electrolyte.

The present invention provides a non-aqueous electrolyte containing a lithium salt, an organic solvent, and any one of compounds represented by formulae 1 to 5 as an additive. [Formula 1] [Formula 2] [Formula 3] [Formula 4] [Formula 5] In Formulae 1 to 5, R has a structure represented by Formula 6. [Formula 6] In Formula 6, Rx and Ry are each independently H or F, in Formula 3, n is an integer from 1 to 5, m is an integer from 1 to 5, in Formula 4 and Formula 5, n is an integer from 1 to 5, and in Formula 4 and Formula 5, R1 and R2 are each independently H or F.

An ultracapacitor that comprises a first electrode, a second electrode, a separator, a nonaqueous electrolyte, and a housing is provided. The first electrode comprises a first current collector electrically coupled to a first carbonaceous coating that comprises activated carbon particles having a first plurality of pores and the second electrode comprises a second current collector electrically coupled to a second carbonaceous coating that comprises activated carbon particles having a second plurality of pores. The separator is positioned between the first electrode and the second electrode. The nonaqueous electrolyte is in ionic contact with the first electrode and the second electrode and contains an ionic liquid comprising a cationic species and a counterion dissolved in a nonaqueous solvent. The first plurality of pores has a first total pore volume, the first total pore volume comprising about 50 vol. % or more of pores having a median pore diameter size of about 2 nanometers or less. A module comprising at least two ultracapacitors, an energy reserve system for electronic latch assemblies, and a vehicle with an energy reserve system for electronic latch assemblies is also provided.

The present invention provides a lithium secondary battery including a positive electrode, a negative electrode, a separator, and a non-aqueous electrolyte, wherein the positive electrode includes a positive electrode active material, the positive electrode active material includes lithium iron phosphate particles, the loading amount of the positive electrode is 450 mg / 25 cm 2 to 740 mg / 25 cm 2 , the non-aqueous electrolyte includes a lithium salt, an organic solvent, and an additive, wherein the organic solvent includes 10 to 35% by volume of ethylene carbonate, 5 to 55% by volume of dimethyl carbonate, and 20 to 70% by volume of ethyl methyl carbonate, and the volume ratio of the cyclic carbonate-based solvent to the linear carbonate-based solvent is 10:90 to 35:65, the additive includes vinylene carbonate, and the weight ratio of the vinylene carbonate to the dimethyl carbonate is greater than 0 to 0.2 or less. By improving the negative electrode reduction stability while improving the impregnation properties of the positive electrode to the non-aqueous electrolyte, the lithium secondary battery has excellent capacity performance effects, excellent life performance, and resistance reduction effects.

The present invention relates to a lithium secondary battery comprising a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and a non-aqueous electrolyte, in which the positive electrode comprises a positive electrode active material comprising a lithium nickel-based oxide represented by a specific chemical formula, the non-aqueous electrolyte includes a lithium salt, an organic solvent, a first additive, and a second additive, the first additive including a compound represented by a specific chemical formula, and the second additive including a compound represented by a specific chemical formula.

This invention provides a lithium secondary battery comprising a positive electrode, a negative electrode, a separator, and a non-aqueous electrolyte. The positive electrode comprises a positive electrode active material, which in turn comprises lithium iron phosphate particles. The loading of the positive electrode is 450 mg / 25 cm⁻¹. 2 Up to 740mg / 25cm 2 The non-aqueous electrolyte comprises a lithium salt, an organic solvent, and an additive. The organic solvent comprises cyclic carbonate solvents and linear carbonate solvents. The cyclic carbonate solvent comprises ethylene carbonate, and the linear carbonate solvent comprises dimethyl carbonate. The content of dimethyl carbonate in the organic solvent is from 5% to 75% by volume. The additive contains vinylene carbonate, and the weight ratio of vinylene carbonate to dimethyl carbonate is greater than 0 and less than or equal to 0.2.

The present invention provides a lithium secondary battery including a positive electrode, a negative electrode, a separator, and a non-aqueous electrolyte, wherein the positive electrode includes a positive electrode active material, the positive electrode active material includes lithium iron phosphate particles, the loading amount of the positive electrode is 450 mg / 25 cm 2 to 740 mg / 25 cm 2 , the non-aqueous electrolyte includes a lithium salt, an organic solvent, and an additive, wherein the organic solvent includes a cyclic carbonate-based solvent and a linear carbonate-based solvent, the linear carbonate-based solvent includes dimethyl carbonate, the content of dimethyl carbonate in the organic solvent is 5% by volume to 75% by volume, the additive contains vinylene carbonate, and the weight ratio of vinylene carbonate to dimethyl carbonate is 0.01 to 0.2. By improving the impregnation properties of the positive electrode to the non-aqueous electrolyte while improving the negative electrode reduction stability, the lithium secondary battery has excellent capacity performance, excellent life performance, and resistance reduction effect.

A battery for use in an electrochemical battery such as a lithium-ion secondary battery pack includes a positive electrode having an active material as a cathode and a current collector; a negative electrode having an active material as an anode and a current collector; a non-aqueous electrolyte; and a separator disposed between the positive and negative electrodes. At least one of the cathode, the anode, the electrolyte, and the separator includes an inorganic additive in the form of a transition phase alumina or a boehmite, the inorganic additive absorbing one or more of moisture and / or hydrogen fluoride (HF) present in the battery. One or more batteries can be combined in a housing to form a lithium-ion secondary battery pack. The inorganic additive can also be integrated as a coating applied to the inner wall of the housing.

Novel, high voltage cathode active materials for non-aqueous ammonia based primary and reserve batteries are described therein, as well as non-aqueous electrolytes supporting high voltage, and various anodes, separators and cell constructions are disclosed. Said materials provide higher power output at low temperatures over prior art ammonia based batteries.