Abstract: A vanadium-chromium electrolyte, a method for preparing the same, and a redox flow battery composed thereof are provided. The vanadium-chromium electrolyte includes active substances and a free acid, the free acid acts as a proton conductive agent after ionization, and the active substances contain at least vanadium ions and chromium ions. The present disclosure further provides the method for preparing the vanadium-chromium electrolyte, which includes the following steps: dissolving a vanadium compound with a free acid, and obtaining a mixed solution of the free acid and vanadium ions through filtering; electrolytically reducing vanadium to an average valence state of 3.5 to 4 valence; adding a chromium compound, dissolving through stirring, and implementing a filtering; and adding pure water and an auxiliary reagent to adjust concentration, and preparing the vanadium-chromium electrolyte.

Abstract: The present invention discloses a POSS-based hybrid supercritical CO2 thickener and a preparation method thereof, and relates to the technical field of oil and gas field development. The preparation method of the thickener comprises the following steps: reacting tetramethyl tetravinylcyclotetrasiloxane, trimethylolpropane trimethacrylate, perfluoroacrylate and POSS containing one double bond in a molar ratio of 1-5:1-2:1-2:0.005-0.01 under the action of a catalyst to obtain the thickener. The preparation method of the POSS-based hybrid supercritical CO2 thickener of the present invention is a bulk reaction, does not require the addition of a solvent, and does not pollute the human body and the environment in the production process.

Abstract: An electrolyte solution and an all-vanadium redox flow battery are disclosed. The electrolyte solution includes: a positive electrode electrolyte solution and a negative electrode electrolyte solution, the positive electrode electrolyte solution and the negative electrode electrolyte solution include chloride ions, sulfate ions and vanadium ions; both the positive electrode electrolyte solution and the negative electrode electrolyte solution satisfy: 2.9?[c(Cl?)+c(SO42?)]/c(Vn+)?3.6; the c(Cl?) represents a concentration of the chloride ions, the c(SO42?) represents a concentration of the sulfate ions, and the c(Vn+) represents a concentration of the vanadium ions. When Cl?, SO42? and Vn+ in the electrolyte solution meet the appropriate concentration relationship, the Cl2 production rate can be greatly reduced, thereby reducing the corrosion of battery materials.

Abstract: A reaction chamber is provided. The reaction chamber includes a chamber body, a dielectric window, and a power supplier. The dielectric window is provided on top of the chamber body along a first direction and hermetically connected with the chamber body. Each coil of a plurality of sets of coils is wound around an outer surface of the dielectric window at an interval along the first direction. The plurality of sets of coils are connected in parallel, with first ends electrically coupled to the power supplier for supplying power to each set of the plurality of sets of coils, and with second ends grounded. The second ends of the plurality of sets of coils are arranged in proximity between the first ends.

Abstract: Embodiments of the invention relate to a reaction chamber and a plasma processing apparatus, which include a chamber body, a dielectric window and a power supply unit, the dielectric window is provided above and hermetically connected with the chamber body, and provided with plural sets of coils arranged at intervals in a vertical direction and wound around the dielectric window at an outer side thereof, and the power supply unit supplies power to the plural sets of coils. In the reaction chamber and the plasma processing apparatus, plasma can be distributed evenly and have an increased density in the reaction chamber, thereby improving uniformity and efficiency of the process; meanwhile, effective power for exciting plasma can be improved, and temperature rise and temperature gradient of the dielectric window during the process can be lowered, so as to prevent the dielectric window from cracking, and prolong service life of the dielectric window.