Abstract: Disclosed is a densified cell assembly and methods for preparing the same. In one embodiment, an isostatic press is applied to a bag which contains a plate and two elastic substrates enveloping a cell pouch, wherein one or more tabs are extended from the cell pouch, wherein the cell pouch accommodates a cell stack comprising one or more electrode layers and one or more electrolyte layers. In one embodiment, the tabs are not damaged or disconnected from the cell pouch due to compression.

Abstract: The present invention generally relates to electrolytes for use in various electrochemical devices. In some cases, the electrolytes are relatively safe to use; for example, the electrolytes may be resistant to overheating, catching on fire, burning, exploding, etc. In some embodiments, such electrolytes may be useful for certain types of high-voltage cathode materials. In some cases, the electrolytes may include ion dissociation compounds that can dissociate tight ion pairs. Non-limiting examples of ion dissociation compounds include trialkyl phosphates, sulfones, or the like. Other aspects of the invention are generally directed to devices including such electrolytes, methods of making or using such electrolytes, kits including such electrolytes, or the like.

Abstract: Disclosed are various polymer solid electrolyte materials suitable for various electrochemical devices and methods for making or using the same. The polymer solid electrolyte comprises a crosslinked polymer from a polymer. Certain embodiments are generally directed to solid electrolytes having relatively high ionic conductivity and/or other mechanical or electrical properties, e.g., tensile strength or decomposition potential. Certain aspects include a polymer, a plasticizer, and an electrolyte salt. In some cases, the polymer for synthesizing the crosslinked polymer may exhibit certain structures such as: where R1 can be one of the following groups: where n is an integer between 1 and 10000, m is an integer between 1 and 5000, and R2 to R6 are each independently selected from the group consisting of hydrogen, methyl, ethyl, phenyl, benzyl, acryl, epoxy ethyl, isocyanate, cyclic carbonate, lactone, lactam, and vinyl; and * indicates a point of attachment.

Abstract: A cell assembly has a plurality of first electrodes, a plurality of second electrodes and a plurality of solid electrolyte layers. The solid electrolyte layers have a protrusion in at least one of the solid electrolyte layers. The protrusion is aligned with a first electrode tab of one of the first electrodes. The folding of the first electrode tabs causes the protrusions to be positioned to separate the first electrode tabs from the second electrodes, thus preventing short circuit between the first electrode tabs and second electrodes. In one aspect, the disclosure provides an all solid-state battery comprising one or more anodes, one or more cathodes and one or more solid electrolyte layers with a protrusion. Also disclosed is a method for preparing same.

Abstract: A polymer electrolyte includes an additive and a crosslinked polymer with a heterogeneous polymer network synthesized from one or more crosslinkers, wherein at least one crosslinker has three or more polymerizable terminals. In another embodiment, the crosslinked polymer has a polymer network with topological defects. In some embodiments, the additive comprises element F and at least one of elements B and P. In some embodiments, the additive comprises F—B, F—P, F—P—O, F—P=O, or any combinations thereof. In one embodiment, the crosslinked polymer is not over-crosslinked. An electrochemical device with the crosslinked polymer as electrolyte exhibits an improved electrochemical and safety performance.

Abstract: Disclosed are cathode active material (CAM) coated with a lithium carbonate doped with lithium borate with a formula of Li2+xC1?xBxO3 wherein 0<x<0.5 and a preparation method therefor. Also disclosed is a cathode layer comprising the coated CAM in the form of particles. In one embodiment, an all-solid-state battery comprising the cathode layer exhibits improved stability and cycling performance.

Abstract: The present invention generally relates to electrolytes for use in various electrochemical devices. In some cases, the electrolytes are relatively safe to use; for example, the electrolytes may be resistant to overheating, catching on fire, burning, exploding, etc. In some embodiments, such electrolytes may be useful for certain types of high-voltage cathode materials. In some cases, the electrolytes may include ion dissociation compounds that can dissociate tight ion pairs. Non-limiting examples of ion dissociation compounds include trialkyl phosphates, sulfones, or the like. Other aspects of the invention are generally directed to devices including such electrolytes, methods of making or using such electrolytes, kits including such electrolytes, or the like.

Abstract: The present disclosure generally relates to various electrodes suitable for electrochemical devices such as batteries, capacitors, sensors, condensers, electrochromic elements, photoelectric conversion elements, etc. Some embodiments are generally directed to electrode materials surrounded by electrolyte, e.g., filling in porous spaces within the electrode. For example, one aspect is generally directed to an electrochemical device comprising an electrode comprising particles. Some or all of the particles may be surrounded by an electrolyte, such as a solid electrolyte. Other aspects of the invention are generally directed to devices including such electrodes, methods of making or using such electrodes, kits including such electrodes, or the like.

Abstract: The present invention generally relates to various polymer solid electrolyte materials suitable for various electrochemical devices and methods for making or using the same. Certain embodiments of the invention are generally directed to solid electrolytes having relatively high ionic conductivity and/or other mechanical or electrical properties, e.g., tensile strength or decomposition potential. Certain aspects include a polymer, a plasticizer, and an electrolyte salt. In some cases, the polymer may exhibit certain structures such as: where R1 can be one of the following groups: where n is an integer between 1 and 10000, m is a integer between 1 and 5000, and R2 to R6 are each independently selected from the group consisting of hydrogen, methyl, ethyl, phenyl, benzyl, acryl, epoxy ethyl, isocyanate, cyclic carbonate, lactone, lactam, and vinyl; and * indicates a point of attachment.

Abstract: A composition for forming an artificial sold electrolyte interphase (SEI) layer includes a polymer, an artificial SEI forming salt, and a solvent. The polymer and the artificial SEI forming salt are dispersed in the solvent.

Abstract: An article includes a polymer. The polymer includes a product of a crosslinking reaction including at least one cross-linker selected from the group consisting of: a) di-acrylates, tri-acrylates, and tetra-acrylates; b) modified tri-acrylates and tetra-acrylates; c) silanes and siloxanes; and d) triazinane-triones.

Abstract: The present invention generally relates to electrolytes for use in various electrochemical devices. In some cases, the electrolytes are relatively safe to use; for example, the electrolytes may be resistant to overheating, catching on fire, burning, exploding, etc. In some embodiments, such electrolytes may be useful for certain types of high-voltage cathode materials. In some cases, the electrolytes may include ion dissociation compounds that can dissociate tight ion pairs. Non-limiting examples of ion dissociation compounds include trialkyl phosphates, sulfones, or the like. Other aspects of the invention are generally directed to devices including such electrolytes, methods of making or using such electrolytes, kits including such electrolytes, or the like.

Abstract: An electrolyte includes an ionic liquid and an electrolyte salt dispersed in the ionic liquid. The ionic liquid includes organic nitrogen cations and charge-delocalized organic anions. The electrolyte salt is selected from alkali metal salt and/or alkaline earth metal salt.

Abstract: The present disclosure generally relates to various electrodes suitable for electrochemical devices such as batteries, capacitors, sensors, condensers, electrochromic elements, photoelectric conversion elements, etc. Some embodiments are generally directed to electrode materials surrounded by electrolyte, e.g., filling in porous spaces within the electrode. For example, one aspect is generally directed to an electrochemical device comprising an electrode comprising particles. Some or all of the particles may be surrounded by an electrolyte, such as a solid electrolyte. Other aspects of the invention are generally directed to devices including such electrodes, methods of making or using such electrodes, kits including such electrodes, or the like.

Abstract: A composition for forming an artificial sold electrolyte interphase (SEI) layer includes a polymer, an artificial SEI forming salt, and a solvent. The polymer and the artificial SEI forming salt are dispersed in the solvent.

Abstract: The present invention generally relates to various polymer solid electrolyte materials suitable for various electrochemical devices. Certain aspects include a polymer, a plasticizer, and an electrolyte salt.

Abstract: The present invention generally relates to various polymer solid electrolyte materials suitable for various electrochemical devices and methods for making or using the same. Certain embodiments of the invention are generally directed to solid electrolytes having relatively high ionic conductivity and/or other mechanical or electrical properties, e.g., tensile strength or decomposition potential. Certain aspects include a polymer, a plasticizer, and an electrolyte salt.