54results about How to "Inhibition of reduction reaction" patented technology

A discharge lamp having a cathode containing lanthanum oxide (La2O3) as an electron emission material, to provide a discharge lamp where reduction of lanthanum oxide (La2O3) is accelerated; a supply amount of lanthanum (La); and its lifespan is long has an anode (4) and a cathode (5) arranged within a discharge vessel (1) so as to face toward each other in a tube axis direction of the discharge vessel (1), and the cathode (5) is made from a material containing a metal oxide of lanthanum (La2O3) and a metal oxide of zirconium (ZrO2) in a tungsten metal (W) substrate with carbon (C) present as a solid solution in the tungsten metal (W) substrate forming the cathode (5).

The invention relates to the technical field of a lithium ion battery, in particular to a composite negative electrode material of a high-capacity lithium ion battery and a preparation method of the composite negative electrode material. The constituents of the composite negative electrode material are silicon powder and graphite which are arranged at an inner layer and a dual-layer coating object arranged at an outer layer, a first layer of the dual-layer coating object is a coating carbon layer, the coating object is amorphous carbon, a second layer of the dual-layer coating object is a coating polymer, the coating object is polyaniline, the composite negative electrode material is a powder material, the grain size of the powder material is 0.5 to 40 micrometers, the mass ratio of the silicon powder to the graphite is 1:99 to 1:1, the mass percentage of the coating carbon layer accounts for 3-15%, and the mass percentage of the coating polymer layer accounts for 3-15%. With the composite negative electrode material, the problems of low charging and discharging specific capacity and poor cycle performance of the conventional carbon material serving as the negative electrode material of a power lithium ion battery are solved, and the composite negative electrode material is high in capacitance and has favorable cycle performance and stability performance.

The present application relates to the technical field of lithium-ion batteries, in particular, to an electrolyte and a lithium-ion battery containing the electrolyte. The electrolytic solution of the present application includes lithium salt, organic solvent and additive, contains diester compound and sulfuric acid ester compound in the additive, and diester compound includes carbonate dimer, carboxylate dimer and sultone Dimer; sulfate ester compounds include cyclic sulfate ester compounds and linear or branched chain sulfate ester compounds. The diester compound can effectively form a film on the positive electrode, inhibit the oxidation of the electrolyte on the positive electrode, and effectively improve the high temperature performance and cycle performance of the battery; the sulfuric acid ester compound can inhibit the reduction reaction of the diester compound on the negative electrode, so that the battery can obtain good Excellent low-temperature charge-discharge performance and rate performance, and can improve the cycle performance of the battery.

The invention provides an environment-friendly high-temperature acidizing resistant corrosion inhibitor and a preparation method thereof. The environment-friendly high-temperature acidizing resistantcorrosion inhibitor comprises the components of, by weight, 10-50 parts of corrosion inhibitor primary agents, 1-10 parts of synergists, 0.5-1.5 parts of surfactants, 40-60 parts of solvents and 5-10parts of mercaptan acid; the corrosion inhibitor primary agent comprises 5-15 parts of polyquinoline quaternary ammonium salt, 5-10 parts of imidazolium quaternary ammonium salt, 10-25 parts of Mannich base; and the synergist comprises 1-5 parts of organic alkynol and 1-10 parts of plant extracts, wherein plant extract comprises one or more of a stephania tetrandra extract, a rhizoma corydalis extract, a sophora flower bud extract and a roxburgh rose extract. The environment-friendly high-temperature acidizing resistant corrosion inhibitor has the excellent performance of environmental protection, high temperature resistance, low damage and the like.