6 results about "Ion transportation" patented technology

The application provides a high-nickel ternary material modification method and a high-nickel positive electrode material with a nitrogen-oxygen coating layer, and relates to the field of lithium ion batteries. In the high-nickel ternary material, surface lattice oxygen is gradually replaced by nitrogen atoms in a high-temperature long-time calcination process in a nitrogen-oxygen mixed atmosphere, so that a nitrogen-oxygen layer is formed on the surface, which is beneficial to the delocalization of electrons, thereby endowing the material with excellent electronic conductivity; meanwhile, the presence of the nitrogen-oxygen layer inhibits the transformation of the surface layer structure into a rock salt phase structure, which is beneficial to realizing efficient ion transport. The formation of the nitrogen-oxygen layer on the surface of the high-nickel ternary material can simultaneously improve the electronic and ionic conduction of the surface of the high-nickel positive electrode material, inhibit the interface side reaction, relieve the volume change, and thereby improve the cycle stability of the battery.

The invention relates to a hierarchical microphase separation strain enhanced ionic conductive elastomer fiber and a preparation method and application thereof, the interior of the ionic conductive elastomer fiber has a bicontinuous network structure, and the ionic conductive elastomer fiber comprises an EOEOEA / PAA continuous phase and a PEA / LiTFSI continuous phase which are interpenetrated. According to the fiber, a copolymer P (PEA-co-EOEOEA) is used as a structural framework, an EOEOEA / PAA continuous phase is constructed by an EOEOEA chain segment and PAA based on a hydrogen-bond interaction, a PEA / LiTFSI continuous phase is constructed by a PEA chain segment and LiTFSI based on a strong coordination interaction, the EOEOEA / PAA continuous phase is used as a mechanical reinforcement phase, and the PEA / LiTFSI continuous phase is used as an ion transport phase. Through hierarchical microphase separation engineering and a dual swelling process, a bicontinuous network structure with EOEOEA chain segment (soft segment) / PAA as a mechanical reinforcement phase and PEA chain segment (hard segment) / LiTFSI as an ion transport phase is constructed, collaborative optimization of mechanical properties and conductivity is realized, and the performance of the composite material is improved. The ionic conductive elastomer fiber with ultrahigh stretchability, toughness, rapid self-repairing property and strain-insensitive ionic conductivity is obtained, and meanwhile, simple and continuous preparation of the fiber is realized.

The present disclosure provides "lithium-ion battery additives". A lithium-ion battery cell is presented. The lithium-ion battery cell includes a current collector and an active material layered on the current collector. The active material layer includes an electrode active material, a conductive agent, and a binder, and has a bottom adjacent to the current collector that includes a solid electrolyte. The battery cell further includes a liquid electrolyte that permeates the active material layer, thereby increasing ion transport during cycling through interaction with the solid electrolyte.

The application discloses an amphiphilic hydrogel electrolyte and a preparation method and a water-based zinc-manganese battery. The method comprises the following steps: providing a surfactant and an initial electrolyte solution; the electrolyte salt solution is a mixed solution of an electrolyte zinc salt and an electrolyte manganese salt; the surfactant is dissolved in the initial electrolyte salt solution to obtain an electrolyte salt solution containing the surfactant; hydrophobic polymer chain monomers, hydrophilic polymer chain monomers and initiators are sequentially dissolved in the electrolyte salt solution containing the surfactant, and after heating treatment, an amphiphilic hydrogel electrolyte is obtained. The above method only uses the surfactant as a physical crosslinking agent, so that the prepared amphiphilic hydrogel electrolyte has the characteristics of segment dynamic movement, can well control ion transport and optimize electrochemical performance. Moreover, the preparation is achieved by a one-pot method, and the method has the advantages of precise control of the state of the polymer, high repeatability, accurate control of ion concentration, adjustable ion state, and improved electrochemical performance of the electrolyte.

A solid polymer electrolyte and a rechargeable battery includes the solid polymer electrolyte. The solid polymer electrolyte includes a polymer matrix including a vinylidene fluoride (VDF)-based compound and a residual solvent including a fluorinated solvent, wherein the residual solvent is arranged facilitate ion transportation of ions of a solvation complex of a metal in the rechargeable battery.

This invention relates to the field of batteries, specifically to a three-dimensional MXene / carbon synergistic framework-supported silicon-oxygen composite anode material, its preparation method, and a lithium-ion battery. The material comprises an MXene / carbon three-dimensional porous framework and silicon-oxygen active materials, wherein the silicon-oxygen active materials are embedded in the pores of the framework in the form of nanoparticles or in-situ gels. The porous framework is a three-dimensional network structure constructed from MXene sheets and carbon materials. This silicon-oxygen composite anode material exhibits excellent electron and ion transport pathways, and the porous framework can buffer the volume expansion of silicon-oxygen particles.