10 results about "Ion transfer" patented technology

A rechargeable battery that is configured to bring two electrodes together when charging or discharging by moving one electrode towards the other and having the two electrodes be apart when not charging or discharging, thus lowering the intercalation of the battery as set up in the customary manner and likely having more charge / discharge cycles and faster charge time as likely the ion transfer throughput can be made larger and there may even be multiple and / or redundant ion transfer paths.

This utility model discloses a visualized micro-experimental device, including a transparent electrolysis chamber, two conductive electrodes, a visualization monitoring module, a transparent gas collecting bottle, a transparent tail gas absorption bottle, a first conduit, a second conduit, a third conduit, and a fourth conduit. The transparent electrolysis chamber is divided into a spatially isolated cathode chamber and an anode chamber. The two conductive electrodes are respectively inserted into the cathode chamber and the anode chamber. The visualization monitoring module is used for visualized qualitative and quantitative analysis of ion transfer. One end of the first conduit is inserted into the upper outlet of the anode chamber, and the other end is inserted into the upper inlet of the transparent gas collecting bottle. One end of the second conduit is inserted into the upper outlet of the transparent gas collecting bottle, and the other end is inserted into the bottom of the transparent tail gas absorption bottle. The third conduit is inserted into the upper outlet of the transparent tail gas absorption bottle. The fourth conduit is inserted into the upper outlet of the cathode chamber. This device solves the technical problems of high safety risks, low level of intelligence, poor environmental performance, and lack of process monitoring in traditional electrolysis experimental devices.

The present application provides a positive electrode material, a method for preparing the same, a positive electrode sheet, and a all-solid-state battery. The positive electrode material includes a lithium-rich manganese-based positive electrode active material and a coating layer covering at least a part of the surface of the lithium-rich manganese-based positive electrode active material. The molecular formula of the lithium-rich manganese-based positive electrode active material is xLi 2-α MnO3·(1-x)Li 1-β Ni a Co b Mn c O 2-γ where a + b + c = 1, 0 < α + β ≤ 0.2, 0 < γ ≤ 0.1, 0 < x < 1. The coating layer satisfies the following formulas 1 and 2: 0.5×10 -3 S / cm ≤ T ≤ 5×10 -3 S / cm (Formula 1), H ≤ 10 -9 S / cm (Formula 2), where T is the ionic conductivity of the coating layer and H is the electronic conductivity of the coating layer. The positive electrode material according to the present application solves the problem of low initial coulombic efficiency of the lithium-rich manganese-based positive electrode material and improves the interface ion transfer efficiency and the stability of the positive electrode material.

The present application belongs to the technical field of new energy batteries, and particularly relates to a negative electrode composite active material, a preparation method and application. The material comprises: a carbon nanofiber film, which is provided with pores; silicon-based nanoparticles, which are loaded on the surface and pores of the carbon nanofiber film; and an amorphous carbon outer layer, which is coated on the carbon nanofiber film and the silicon-based nanoparticles. The carbon nanofiber film has pores, which not only can provide a certain expansion space, effectively alleviate the expansion of lithium ions in the embedding and de-embedding process, but also can increase the ion transfer channel and improve the ion conductivity; the amorphous carbon outer layer can further inhibit the expansion of the silicon-based material and effectively improve the cycle life; and the coating of the amorphous carbon can build an internal electric field between the amorphous carbon-carbon fiber / silicon particles, improve the conductivity and enhance the battery rate performance.

The application provides a cyanide covalent organic framework material and a preparation method thereof, and a functional diaphragm and a preparation method thereof, and belongs to the technical field of diaphragms.The application provides a cyanide covalent organic framework material, which has a chemical structure as shown in formula I.The COF material provided by the application contains a cyanide functional group, can realize enrichment and acceleration of anion transfer, promote decomposition of lithium salt anions, form a stable SEI rich in LiF, inhibit growth of lithium dendrites, and improve safety and interface stability of a battery; one-dimensional nano open pores of the COF material can significantly improve the lithium ion transfer rate of a compact modification layer, and improve ion conductivity and cycle performance of the battery.

The invention relates to an electrochemical device comprising: - two electrodes; - a spacer, placed between the two electrodes, made of a porous polymer material forming a continuous three-dimensional network, having a porosity greater than 70%, preferably greater than 80%, whose pores are interconnected, and possessing charged surface functional groups; - an electrolytic solution comprising a solute in the form of a dissolved salt and impregnating the pores of said spacer; - and a device D for harvesting the electrical energy generated by a potential difference existing between the two electrodes or for applying a potential difference between the two electrodes. Said device is intended for implementing an ion transfer process within said device.

An electromagnetic stimulated rechargeable battery includes first and second electrodes connected by an ion transfer medium or an ion transfer path that facilitates ion movements between the first and the second electrodes, and one or more electromagnetic radiation generator configured to generate a first set of one or more electromagnetic field during a charge operation, and a second set of one or more electromagnetic field during a discharge operation, the first set being different from the second set, wherein the one or more electromagnetic field is configured to exert a force on the ions to stimulate the movement of ions between the first and the second electrodes.

Method for operating an analytical instrument comprising a first ion storage and a second ion storage downstream of the first ion storage, wherein the method comprises: Determine whether a target accumulation time for the second ion storage is greater than a threshold accumulation time; If it is determined that the target accumulation time is less than the threshold accumulation time: accumulation of ions within the second ion storage using an accumulation time based on the target accumulation time; and If it is determined that the target accumulation time is greater than the threshold accumulation time: Accumulate ions within the first ion storage using a first accumulation time based on a difference between the target accumulation time and the threshold accumulation time, transfer the ions accumulated in the first ion storage to the second ion storage, and accumulate further ions within the second ion storage using a second accumulation time based on the threshold accumulation time.

The application discloses a method for preparing a few-layer molybdenum disulfide / reduced graphene composite material for a sodium ion battery based on crystallization heat treatment and belongs to the field of sodium ion batteries. The application aims at solving the problems of the existing few-layer MoS2-based sodium ion battery electrode material preparation process, such as complexity, finished product transfer difficulty and uneven crystal quality. In the application, lower solvent heat temperature, solvent being ethylene glycol or isopropyl alcohol and high molybdenum-sulfur ratio are adopted to prepare amorphous MoS2 / rGO as a precursor, and then the amorphous MoS2 / rGO is vacuum sealed in a quartz tube and subjected to vacuum high-temperature crystallization heat treatment operation, so that the few-layer MoS2 / rGO composite material with high crystal purity, uniform quality and fewer layers is obtained at a proper heating rate. The MoS2 obtained by the method has very few layers, which is beneficial to exposing more active sites, promoting fast ion transfer, shortening the sodium ion diffusion path, enhancing the reaction kinetics and maintaining the structural integrity.

A self-poisoning system for a lithium secondary battery and a poisoned, deactivated lithium secondary battery are disclosed. The self-poisoning system includes a poisoning agent disposed within or outside the electrochemical reaction system of the lithium secondary battery. When the lithium secondary battery is heated to a poisoning initiation temperature in the temperature range of 120°C to 150°C, the poisoning agent is activated and releases a primary poisoning element and an auxiliary poisoning element into the electrochemical reaction system of the lithium secondary battery. This forms an oxide layer on the surface of the positive electrode active material and fills the lithium-deficient vacancies with fluorine, thereby effectively stabilizing the crystal structure of the positive electrode active material, preventing oxygen release, and causing the positive electrode active material to lose its ability to participate in the electrochemical reaction of lithium-ion transfer, effectively terminating the thermal runaway reaction of the lithium secondary battery.