33results about How to "Inhibition of catalytic decomposition" patented technology

The invention provides a lithium titanate secondary battery which comprises an anode pole piece, a cathode pole piece and PC-based electrolyte. The secondary battery is characterized in that the PC-based electrolyte is prepared from electrolyte lithium salt, lithium tetrafluoro(oxalato)phosphate (LTFOP), ethylene sulfate (DTD) and a PC-based organic solvent. According to the secondary battery, a film can be formed by reducing before charging and lithium-intercalation of a lithium titanate cathode by utilizing the high potential (1.75V vs Li+ / Li) reduction characteristic of lithium tetrafluoro(oxalato)phosphate, catalytic decomposition of the Ti-O active part in titanium titanate for electrolyte can be inhibited, and a lithium titanate battery is prevented from producing gas at high temperature; and oxygenolysis of electrolyte on the cathode surface and dissolution of transition metal ions in a cathode material can be reduced by utilizing the characteristic of ethylene sulfate forming a film on a cathode surface, and thus the circulating service life of a lithium titanate battery can be prolonged.

A composite positive electrode of a high-voltage solid-state battery and a preparation method thereof belong to the technical field of all-solid-state battery systems. The purpose of the present invention is to solve the problem of low cut-off voltage of the battery caused by the voltage window of the all-solid polymer electrolyte, and it is difficult to match the high voltage positive stage. In the bottle, add acetone solvent and stir to dissolve, stir for 12-24h, then add 1% azoisobutyronitrile based on the total mass of the polymer monomer as a thermal initiator, and continue stirring for 12-24h; the ternary LiNi 0.8 Co 0.1 Mn 0.1 O 2 The positive active material and carbon nanotubes are added into the container, then the block copolymer binder precursor solution in step 1 is added, and the mixture is stirred on a stirrer for 24-36 hours to make it evenly mixed; a pole piece is prepared. The present invention replaces the traditional lithium ion battery positive stage binder with a block copolymer electrolyte with good lithium ion conducting properties, so as to enhance the lithium ion diffusion capability inside the positive stage.

The invention relates to the technical field of lithium-ion batteries, in particular to an electrolyte of the lithium-ion battery and the lithium-ion battery containing the electrolyte. The electrolyte comprises a lithium salt, a non-aqueous organic solvent and an additive, wherein the additive comprises a film-forming additive A and a stabilizing additive B; the stabilizing additive B is a chainlike disulfonic acid ester compound as shown in a formula I and / or a formula II; and the film-forming additive A forms an SEI film on a negative electrode surface of the battery and the side reaction of a negative electrode interface and the electrolyte is reduced, so that the film-forming additive A is an necessary precondition that the battery has relatively good cycle performance. The stabilizing additive B can form a CEI film on a positive electrode surface, the activity of a positive electrode interface and the electrolyte is inhibited, direct contact oxidation of a positive electrode and the electrolyte is reduced, meanwhile, the structure stability of a positive electrode material is improved and the structure is not easy to collapse and crush due to generation of the stress, so that the electrolyte has excellent high-temperature storage performance and high-temperature cycle performance through combination of the additive A and the additive B.

The invention discloses a benzofuran compound and a medical application thereof, and relates to a compound and an application thereof. A general formula of the compound is as shown in the specification, wherein R and R' are independently selected from hydrogen, methyl, ethyl or tertiary butyl; or the R and R', together with nitrogen atoms connected to the R and R', form pyrrolidyl, piperidyl or morpholinyl. The compound, disclosed by the invention, through an enzyme inhibiting property efficacy and other biochemical parameters thereof, can achieve an effective treatment effect by an expected usable dosage range which is about 0.01-10mg / kg per day; the compound is bound or embedded in a soluble and / or biodegradable polymer and is coated on a Stent's impression material; such polymer contains polyvinylpyrrolidone, polyhydroxy-propyl isobutylene amide-phenol, and a cross-linked or amphiphilic block copolymer of hydrogel.

The invention discloses a hydrogen peroxide concentration device, which relates to the technical field of hydrogen peroxide safety. The hydrogen peroxide concentration device includes a filter device communicated with the inlet of the raw material, an evaporation device connected with the filter device in a cut-off manner, and a condensation pipeline connected with the evaporation device, the decompression device, and the concentrated hydrogen peroxide chamber respectively. A heat-dissipating component is provided near the inlet of the condensing pipe in the evaporation device. Impurities such as organic matter and metal ions in hydrogen peroxide produced by industrial devices can be removed by the set filter device, thereby inhibiting liquid-phase catalytic decomposition. Through the action of the decompression device, decompression evaporation can be realized, the boiling point of hydrogen peroxide is lowered, and the distillation temperature is controlled within a safe range. If local abnormal decomposition occurs in the evaporation device, the heat dissipation component can disperse the decomposition heat in time and suppress the occurrence of decomposition explosion.