Abstract: An electrochemical device includes a negative electrode. The negative electrode includes a current collector layer, a lithium metal layer, and a porous framework layer that are arranged in sequence. The porous framework layer is partly intercalated in the lithium metal layer. A thickness by which the porous framework layer is intercalated in the lithium metal layer is 0.2 ?m to 50 ?m. The electrochemical device achieves excellent cycle performance and relatively high safety and reliability.

Abstract: A separator includes a sub-nanoporous material and a binder, where the sub-nanoporous material includes a metal-organic framework material or a molecular sieve material, and a pore size of pores of the sub-nanoporous material ranges from 0.01 nm to 1 nm. The separator can confine an electrolyte within the pores of the sub-nanoporous material. Applying the separator to an electrochemical apparatus facilitates reduction of side reactions between lithium metal and the electrolyte during cycling of the electrochemical apparatus, and increases lithium deposition density on a surface of a negative electrode plate, thereby alleviating issues such as cracking and peeling of an SEI film during cycling; and further facilitates an increase in lithium-ion transference number, thereby delaying growth of lithium dendrites, improving safety performance of the electrochemical apparatus, and extending the cycle life of the electrochemical apparatus.

Abstract: An energy storage device including a housing assembly and a battery. The housing assembly includes a top shell, an intermediate shell and a bottom shell. The intermediate shell is located between the top shell and the bottom shell, and is respectively connected to the top shell and the bottom shell. An air inlet space is formed between the intermediate shell and the top shell, and an air outlet space is formed between the intermediate shell and the bottom shell. The top shell is provided with an air inlet connected to the air inlet space, the intermediate shell is provided with an air supply port connected to the air inlet space and the air outlet space, the bottom shell is provided with an air outlet connected to the air outlet space, and the battery is built in the air outlet space. The air supply port is provided with a fan assembly.

Abstract: A secondary battery comprising positive electrode active material. The positive electrode active material includes a positive electrode active material substrate and a solid electrolyte material. The positive electrode active material substrate includes a first element, and the solid electrolyte material includes a second element. A weight percentage of any one of the second element in a surface region of particles of the positive electrode active material is 1000 ppm to 20000 ppm, and a weight percentage of any one of the second element in an internal region of particles of the positive electrode active material is less than 500 ppm.

Abstract: A secondary battery includes a positive electrode, a negative electrode, and an electrolyte solution; wherein the negative electrode includes a negative electrode material layer. The negative electrode material layer includes a negative electrode active material and a solid electrolyte material. The solid electrolyte material contains aluminum, titanium, phosphorus. The secondary battery is cycled at an ambient temperature of 25° C., and after going N cycles, the negative electrode material layer comprises Li2O, Li0.5TiO2, Li3P, and Li3PO4, wherein 10?N?2000. Based on a mass of the negative electrode material layer, a mass percentage of Li2O is 0.006% to 1.25%, a mass percentage of Li0.5TiO2 is 0.005% to 2%, a mass percentage of Li3P is 0.003% to 0.8%, and a mass percentage of Li3PO4 is 0.006% to 1.6%.

Abstract: A secondary battery includes a negative electrode plate, wherein the negative electrode plate includes a negative electrode current collector and a negative electrode material layer disposed on at least one surface of the negative electrode current collector, and a cohesion of the negative electrode material layer is Z N/m, wherein 15?Z?45; and the negative electrode material layer includes a negative electrode active material, a solid electrolyte material, and a negative electrode binder, the solid electrolyte material includes lanthanum, and based on a mass of the negative electrode material layer, a mass percentage of lanthanum is a, wherein 0.16%?a?5%.

Abstract: A negative electrode plate includes a three-dimensional framework structure. The three-dimensional framework structure includes fibers and rigid particles. Mohs hardness of the rigid particles is greater than or equal to 2, and an elastic modulus of the rigid particles is greater than or equal to 40 Gpa. The three-dimensional framework structure can mitigate volume expansion of the negative active material during cycling. On the other hand, the rigid particles help to stabilize the three-dimensional framework structure and can serve as a lithium wetting material to induce lithium to deposit inside the three-dimensional framework, thereby reducing the generation of lithium dendrites and improving safety performance and cycle performance of the formed electrochemical device.

Abstract: A negative electrode plate includes a negative electrode current collector and a negative electrode active material layer disposed on at least one side surface of the negative electrode current collector, where the negative electrode active material layer includes a silicon-carbon composite material and a lanthanide compound.

Abstract: A secondary battery includes a negative electrode plate and a separator. The negative electrode plate includes a three-dimensional framework. The three-dimensional framework includes a first framework layer and a second framework layer. The first framework layer includes one-dimensional conductive fibers. The second framework layer includes a zero-dimensional material, a one-dimensional material, and a two-dimensional material. The zero-dimensional material is a lithiophilic material.

Abstract: A separator includes a polymer layer and a porous material layer. The porous material layer includes a porous material. The porous material includes a metal-organic framework material, a covalent organic framework material, a molecular sieve material, or a microporous polymer. The separator contains nanopores and sub-nanopores. By applying the separator to an electrochemical device, solvent molecules in an electrolyte solution can be confined within pore channels of the separator while the electrolyte solution penetrates the separator, thereby not only reducing side reactions between lithium metal and the electrolyte solution during cycling of the electrochemical device and improving the cycle performance of the electrochemical device, but also increasing the mobility of lithium ions and improving the electrochemical performance of the electrochemical device.

Abstract: A positive electrode plate includes a positive electrode current collector and a positive electrode material layer provided on at least one surface of the positive electrode current collector. The positive electrode material layer includes one-dimensional ion-conducting fiber and a positive electrode active material. The one-dimensional ion-conducting fiber has a diameter of 0.1 ?m to 10 ?m and a length-diameter ratio of greater than or equal to 1.5. A mass ratio of the one-dimensional ion-conducting fiber to the positive electrode active material is 0.01:1 to 0.2:1.

Abstract: Separator membranes for ion batteries and methods of producing such separator membranes are disclosed herein. The separator membranes have vertically-aligned pores that have as small as submicron diameters at one or both membrane surfaces. The separator membranes may be fabricated via a novel and innovative bidirectional freeze-casting process that produces a temperature gradient in two directions. The separator membranes disclosed herein and fabricated by this method can be used in ion batteries, such as sodium ion batteries.

Abstract: A negative electrode plate includes a three-dimensional framework structure. The three-dimensional framework structure includes fibers and rigid particles. Mohs hardness of the rigid particles is greater than or equal to 2, and an elastic modulus of the rigid particles is greater than or equal to 40 Gpa. The three-dimensional framework structure can mitigate volume expansion of the negative active material during cycling. On the other hand, the rigid particles help to stabilize the three-dimensional framework structure and can serve as a lithium wetting material to induce lithium to deposit inside the three-dimensional framework, thereby reducing the generation of lithium dendrites and improving safety performance and cycle performance of the formed electrochemical device.

Abstract: An electrochemical device includes a negative electrode. The negative electrode includes a current collector layer, a lithium metal layer, and a porous framework layer that are arranged in sequence. The porous framework layer is partly intercalated in the lithium metal layer. A thickness by which the porous framework layer is intercalated in the lithium metal layer is 0.2 ?m to 50 ?m. The electrochemical device achieves excellent cycle performance and relatively high safety and reliability.

Abstract: A coated particle comprising a lithium titanate particle core encased by a polyimide coating, an electrode comprising a plurality of polyimide coated LTO particles an electro-active material, and a lithium ion battery comprising an anode, a cathode, a separator and electrolyte wherein the anode comprises a plurality of polyimide coated LTO particles. The polyimide coating effectively reduces the amount of gas formation typically encountered with use of lithium titanate in electrochemical cells.

Abstract: A coated particle comprising a lithium titanate particle core encased by a polyimide coating, an electrode comprising a plurality of polyimide coated LTO particles an electro-active material, and a lithium ion battery comprising an anode, a cathode, a separator and electrolyte wherein the anode comprises a plurality of polyimide coated LTO particles. The polyimide coating effectively reduces the amount of gas formation typically encountered with use of lithium titanate in electrochemical cells.

Abstract: A method for coating hydrogel and silicone hydrogel articles, and articles made by the method, are provided in which the coating is first applied to the molding surface in which an article-forming material will be cured to form the article. The method permits the thickness and uniformity of the coating to be more easily controlled than in known coating methods.

Abstract: The invention is the method of preparing macromer for use in making ophthalmic lenses comprising combining two or more monomers and using a macromer-forming catalyst, wherein the macromer-forming catalyst comprises triethylamine or bismuth.

Abstract: The present invention relates to (meth)acrylamide monomers of the formula: wherein R is H or CH3, R1 is selected from H, substituted and unsubstituted alkyl groups having 1 to 8 carbon atoms, substituted and unsubstituted benzene and toluene groups and and R2, R3 and R4 are independently selected from alkyl groups having 1 to 8 carbon atoms, substituted and unsubstituted benzene and toluene groups, and —OSiR5R6R7 wherein R5, R6 and R7 are independently selected from the group consisting of straight or branched alkyl groups having 1 to 4 carbon atoms. Polymers made therefrom are also disclosed.

Abstract: The present invention relates to (meth)acrylamide monomers of the formula: wherein R is H or CH3, R1 is selected from H, substituted and unsubstituted alkyl groups having 1 to 8 carbon atoms, substituted and unsubstituted benzene and toluene groups and and R2, R3 and R4 are independently selected from alkyl groups having 1 to 8 carbon atoms, substituted and unsubstituted benzene and toluene groups, and —OSiR5R6R7 wherein R5, R6 and R7 are independently selected from the group consisting of straight or branched alkyl groups having 1 to 4 carbon atoms. Polymers made therefrom are also disclosed.