Abstract: An electrolyte including an imidazolium salt compound and a pyridine compound. The electrolyte, includes a compound of Formula I and a compound of Formula II: where R1 is selected from halo, cyano, substituted or unsubstituted C1-C12 alkyl, substituted or unsubstituted C2-C12 alkenyl, substituted or unsubstituted C2-C12 alkynyl, substituted or unsubstituted C2-C12 alkoxy, substituted or unsubstituted C3-C12 cycloalkyl, and substituted or unsubstituted C6-C12 aryl; and R11, R12, R13, R14 and R15 are each independently selected from H, halo, cyano, substituted or unsubstituted C1-C12 alkyl, substituted or unsubstituted C2-C12 alkenyl, substituted or unsubstituted C2-C12 alkynyl, substituted or unsubstituted C2-C12 alkoxy, substituted or unsubstituted C3-C12 cycloalkyl, and substituted or unsubstituted C6-C12 aryl; when substituted, the substituent is halo or cyano.

Abstract: An electrochemical device, including a positive electrode, a negative electrode, a separator and an electrolyte. The electrolyte includes a nitrile compound, and the mass percentage of the nitrile compound in the electrolyte is A %; the negative electrode includes a current collector, wherein the current collector comprises a first region and a second region; the first region is provided with a negative electrode active substance layer; the second region does not comprise a negative electrode active substance layer; the area of the second region is B % of the surface area of the current collector; and A×B<600.

Abstract: An electrolyte, including a carbonyl triazole compound or a thiocarbonyl triazole compound. Also, an electrochemical apparatus including a positive electrode, a negative electrode, and the electrolyte, and an electronic apparatus including the electrochemical apparatus. The electrolyte can improve high-temperature cycling performance of electrochemical apparatuses under high voltage conditions and reduce cycling resistance growth rate of the electrochemical apparatuses.

Abstract: An electrolyte, comprising a compound of Formula I and an additive A, R1, R2, R3, R4, R5, R6, R7 and R8 are each independently selected from: hydrogen, halo, —COOX, substituted or unsubstituted C1-8alkyl, substituted or unsubstituted C2-10alkenyl, substituted or unsubstituted C2-10alkynyl, substituted or unsubstituted C1-8alkoxy, or —Ra—S(=O)2—Rb, wherein Ra is selected from substituted or unsubstituted C1-8alkylene, Rb is selected from halo or substituted or unsubstituted C1-8alkyl, and at least one of R1, R2, R3, R4, R5, R6, R7 and R8 is —COOX. When substituted, the substituent is selected from cyano or halo; and X is selected from Li+, Na+, K+ or Rb+. The additive A is at least one selected from fluoroethylene carbonate, LiPO2F2, or vinylene carbonate.

Abstract: An electrolyte, including a fluorine-containing phosphate ester and a carboxylate ester, wherein the fluorine-containing phosphate ester is represented by Formula 1: R1, R2 and R3 are each independently selected from hydrogen, a C1-C10 alkyl group, C1-C10 alkoxy group, C1-C10 haloalkyl group, C1-C10 haloalkoxy group, C1-C10 phosphate ester group, or C1-C10 mono- or multiple-carbonate ester group, wherein at least one of R1, R2 and R3 comprises a fluorine atom. The weight ratio of the fluorine-containing phosphate ester to the carboxylate ester is 0.001-0.5.

Abstract: Embodiments of the present application relate to a solid electrolyte and a preparation method thereof, and an electrochemical device and an electronic device comprising the solid electrolyte. The solid electrolyte comprises a lithium-containing transition metal sulfide being represented by the chemical formula of Li2?2a+bCd1+aMcGe1?dS4, where M is selected from the group consisting of Al, Ga, In, Si, Sn and a combination thereof, wherein 0<a?0.25, 0?b?0.2, 0?c?0.2, and 0?d?0.2. The embodiments of the present application effectively improve the shortcomings of poor chemical stability of the conventional thiophosphate solid electrolyte in an atmospheric environment by providing the above solid electrolyte having a thio-LISICON structure and containing no phosphorus (P), so that the solid electrolyte has both good chemical stability and high ionic conductivity, thereby reducing the processing environment requirements and manufacturing cost of the solid electrolyte.

Abstract: A fact validation method including the following steps: a statement to be validated is inputted and a searching is made for the statement to obtain an evidence set of the statement; a hierarchical heterogeneous graph consisting of an entity node, a sentence node and a context node is constructed based on the evidence set; the statement and the evidence set are spliced and a node is initialized to obtain feature representation of the node; the feature representation of the node is updated based on inference according to a propagation direction of a neural network of the node in the hierarchical heterogeneous graph; and an inference path for the updated feature representation of the node is built and a prediction result of the statement is output according to the inference path.

Abstract: A handheld vacuum cleaner includes a frame, and a dust barrel and a locking portion mounted on the frame, wherein a front end of the dust barrel and the locking portion are movable relative to each other and are arranged opposite to each other; the dust barrel has a rotatable front cover at a front side thereof; and when the locking portion and the dust barrel move with respect to each other, the front cover is automatically rotatable to open, or close on the front side of the dust barrel due to limit by the locking portion.

Abstract: Disclosed is a linkage limiting assembly applied in a vacuum cleaner, which is mounted within a frame of the vacuum cleaner. The linkage limiting assembly includes a triggering button arranged at the rear end of the frame, a pushing member configured to push an electric fan assembly or a dust barrel of the vacuum cleaner upwards, a limiting member configured to limit the maximum stroke of the electric fan assembly or the dust barrel, and a linking member connecting the triggering button with the limiting member in a force transmission manner.

Abstract: The present application relates to an electrolytic solution and an electrochemical device using the same. The electrolytic solution comprises a cyclic fluorocarbonate, a chain fluorocarbonate and a fluoroether compound, wherein based on the weight of the electrolytic solution, the weight percentage of the cyclic fluorocarbonate is 15 wt % to 80 wt %. The electrolytic solution provided by the present application has high electric conductivity and good electrochemical stability and safety performance, can significantly improve the cycle performance of the battery, and especially meet the demand for long cycle life of a lithium metal battery, and has a very large application value in the lithium metal battery.

Abstract: The disclosure relates to a fact validation method and system, a computer device and a storage medium. The method includes following steps: a statement to be validated is inputted and a searching is made for the statement to obtain an evidence set of the statement; a hierarchical heterogeneous graph consisting of an entity node, a sentence node and a context node is constructed based on the evidence set; the statement and the evidence set are spliced and a node is initialized to obtain feature representation of the node; the feature representation of the node is updated based on inference according to a propagation direction of a neural network of the node in the hierarchical heterogeneous graph; and an inference path for the updated feature representation of the node is built and a prediction result of the statement is output according to the inference path.

Abstract: An electrolyte includes a compound represented by formula I-A, where A1, A2, and A3 are each independently selected from formula I-B or formula I-C, and at least two of A1, A2, and A3 are formula I-C. In formula I-A, n is selected from integers 1 to 10, and m is selected from 0 or 1. In formula I-B and formula I-C, represents a site at which two adjacent atoms are joined. The electrolyte can significantly improve high-temperature storage performance, cycle performance, and floating charge performance of the electrochemical device.

Abstract: A battery includes an electrode assembly, an electrolytic solution, a package accommodating the electrode assembly, a first tab, a second tab, and a first filler. The electrode assembly is formed by winding a first electrode plate and a second electrode plate stacked. The first current collector includes a first blank region, a first single-surface-coated region, and a first double-surface-coated region. The first blank region includes a first planar region and a first bent region. The first single-surface-coated region includes a second bent region and a second planar region. The first tab is disposed in the first planar region. The second tab is disposed on the second electrode plate. The first filler is disposed in the first planar region or the second planar region. Projections of the first filler, the first tab, and the second tab in a thickness direction of the electrode assembly do not overlap.

Abstract: An electrochemical apparatus, including a positive electrode, a negative electrode, an separator, and an electrolyte, wherein the positive electrode comprises a current collector and a positive active material layer, and the positive active material layer comprises a positive active material; and the electrolyte comprises a compound of Formula I: wherein R11, R12, R13, R14, R15 and R16 are each independently selected from: H, halogen, and the following substituted or unsubstituted groups: a C1-8 alkyl group, a C2-8 alkenyl group, a C2-8 alkynyl group, or a C6-12 aryl group; and an amount of the compound of Formula I required per 1 g of the positive active material is about 0.001 g to about 0.064 g. The present application can effectively improve high-temperature storage and high-temperature cycle performance of an electrochemical apparatus.

Abstract: An electrolyte including one or more nitrile benzoquinone compounds, and the nitrile benzoquinone compound is selected from the group consisting of the compounds represented by formula I, formula II, and formula III: The substituents R1 to R9 are each independently selected from the group consisting of hydrogen, a C2 to C12 ether group, a C1 to C12 alkoxy group, halogen, a C1 to C12 alkyl group, a C2 to C12 alkenyl group, a C2 to C12 alkynyl group, and a C6 to C26 aryl group. The electrolyte can form a stable protective film on a cathode, thereby increasing the cycle capacity retention rate and high temperature storage performance of an electrochemical device.

Abstract: This application relates to an electrochemical device. The electrochemical device in this application includes a positive electrode, a negative electrode, and an electrolytic solution, where the electrolytic solution includes an anion containing a phosphoric anhydride functional group of a specific structure. By adding such anion into the electrolytic solution, this application can improve both low-temperature discharge performance and high-temperature storage performance of the electrochemical device, and improve cycle stability of the electrochemical device at a normal temperature and a high temperature.

Abstract: An electrochemical device includes a positive electrode, a negative electrode, a separator located between the positive electrode and the negative electrode, and an electrolytic solution. The positive electrode includes a positive current collector and a positive active material layer disposed on the positive current collector. The positive active material layer includes a positive active material. The positive active material includes an element A. The element A is selected from at least one of Al, B, Ca, Mg, Ti, Cu, Nb, Si, Zr, Y, or W. The electrolytic solution includes at least one of 1,3-propane sultone or a derivative thereof. A mass ratio of the element A in the positive active material to 1,3-propane sultone or a derivative is 1:0.2 to 1:50.

Abstract: An electrochemical apparatus includes an electrolyte, a positive electrode and a negative electrode, the negative electrode includes a negative active material layer, the negative active material layer includes a negative active material, the electrolyte includes fluoroethylene carbonate, and the electrochemical apparatus satisfies the following relational expressions: 0.5<Rct/Rcp<1.5 and both Rct and Rcp are less than 35 milliohms, and 0.005?A/B?0.1; where Rct represents a charge transfer resistance under 50% state of charge at 25 degrees Celsius, and Rcp represents a concentration polarization resistance in the 50% state of charge at 25 degrees Celsius; a mass of the fluoroethylene carbonate corresponding to 1 g of the negative active material is A g, and a specific surface area of the negative active material is B m2/g. This application aims to improve the fast charging performance of the electrochemical apparatus while maintaining the cycle performance thereof.

Abstract: An electrolyte including a bis-cyclic sulfite compound and a multi-nitrile compound, which can form a stable protective layer on a positive electrode surface to ensure a lithium-ion battery stably operates at a voltage of ?4.45V. The electrolyte can remarkably improve a high temperature intermittent cycle capacity retention ratio and a high temperature resistant safety performance upon circulation of the high-voltage lithium-ion battery.

Abstract: An electrolyte includes a compound of formula 1: R1 and R2 are each independently selected from H, halogen atom, a substituted or unsubstituted C1-10 alkyl group, a substituted or unsubstituted C3-10 cycloalkyl group, a substituted or unsubstituted C2-10 alkenyl group, a substituted or unsubstituted C2-10 alkynyl group, a substituted or unsubstituted C1-10 alkoxy group, a substituted or unsubstituted C6-10 aryl group, a substituted or unsubstituted C3-10 heteroaryl group, or any combination thereof. R is selected from a substituted or unsubstituted C1-10 alkyl group, a substituted or unsubstituted C3-10 cycloalkyl group, a substituted or unsubstituted C2-10 alkenyl group, a substituted or unsubstituted C2-10 alkynyl group, a substituted or unsubstituted C1-10 alkoxy group, a substituted or unsubstituted C6-10 aryl group or a substituted or unsubstituted C3-10 heteroaryl group, a substituted or unsubstituted C3-10 heterocycloalkyl group, a butyrolactam group, or any combination thereof.