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50 results about "Simple compound" patented technology

A simple sentence contains one independent clause. A compound sentence contains more than one! Put another way: a simple sentence contains a subject and a predicate, but a compound sentence contains more than one subject and more than one predicate.

Nitrogen-rich hollow carbon sphere/sulfur composite positive electrode material for lithium-sulfur battery and preparation method of nitrogen-rich hollow carbon sphere/sulfur composite positive electrode material

The invention discloses a nitrogen-rich hollow carbon sphere / sulfur composite positive electrode material for a lithium-sulfur battery and a preparation method of the nitrogen-rich hollow carbon sphere / sulfur composite positive electrode material, and belongs to the field of a new generation of electrochemical energy storage. The composite positive electrode material comprises nitrogen-rich hollow carbon spheres which are prepared from a melamine compound as a nitrogen-rich carbon source and taken as a sulfur-bearing matrix and a conductive network, and have large specific surface area, high porosity and excellent conductivity; and the nitrogen-rich hollow carbon sphere / sulfur composite positive electrode material is prepared through a simple compound method. The nitrogen-rich hollow carbon spheres provided by the invention are simple in preparation method and friendly to environment; industrial production is easy to implement; the prepared nitrogen-rich hollow carbon sphere / sulfur composite positive electrode material has the advantages of high specific discharge capacity, stable cycle performance, good rate capability and the like when used for the lithium-sulfur battery, and has a broad application prospect in the fields of electric vehicles, energy storage stations and portable equipment.
Owner:HEFEI GUOXUAN HIGH TECH POWER ENERGY

Method for treating papermaking black liquor with composite coagulation method

The invention provides a method for treating papermaking black liquor with a composite coagulation method, the pH of the papermaking black liquor is firstly regulated to 5-6.5, a composite coagulant is then added and stirred to react, and after the reaction, standing, sedimenting and filtering are carried out. The composite coagulant is turbid liquid which is formed by mixing ferric sulphate solution, aluminum sulfate solution and polymeric aluminium ferric chloride solution with aluminium potassium sulfate solution according to the volume ratio of 1:(0.3-0.5):(0.9-1.1):(0.4-0.6), the mass concentrations of the ferric sulphate solution, the aluminum sulfate solution and the polymeric aluminium ferric chloride solution are in a range of 15%-25%, and the mass concentration of the aluminium potassium sulfate solution is in a range of 5%-10%. The usage of the efficient composite coagulant is small, and the papermaking black liquor can be effectively purified, so the problem of an unobvious effect of a single coagulant is solved; the acid usage and the alkali usage when the pH is regulated back are effectively reduced; and the method has a simple compound process, is convenient to operate and dose not need to consider the dissolving problem of various coagulants.
Owner:NANJING UNIV
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