文献类型：专利

英文题名：Three-dimensional macroporous-mesoporous lithium ion sieve comprises material having three-dimensionally ordered macroporous-mesoporous structure interconnected between holes, reduce lithium ion diffusion resistance between materials

作者：WANG L;LI N;GAN K;LU D;ZHANG J

机构：[1]UNIV EAST CHINA SCI & TECHNOLOGY

申请号：CN107321297-A

申请日：2017-07-03

公开日：2017-11-07

语种：英文

收录：DERWENT

摘要：NOVELTY - Three-dimensional macroporous-mesoporous lithium ion sieve comprises material having three-dimensionally ordered macroporous-mesoporous structure interconnected between respective holes, these structures can reduce lithium ion diffusion resistance between materials, and improve material for lithium ion adsorption properties. USE - Used as three-dimensional macroporous-mesoporous lithium ion sieve. ADVANTAGE - The lithium ion sieve has good lithium ion entering hole from all directions, reduces internal lithium ion diffusion resistance, reduces adsorption-desorption balance time, increases lithium ion adsorption capacity, and utilizes good lithium absorbing material. DETAILED DESCRIPTION - An INDEPENDENT CLIAM is also included for preparing three-dimensional macroporous-mesoporous lithium ion sieve comprising (A) uniformly mixing sodium dodecyl benzene sulfonate, and potassium persulfate with water, adding ethanol to mixed solution, transferring into three round-bottomed flask, carrying out magnetic stirring at room temperature to dissolve, dissolving the solid, heating the solution under nitrogen protection, rapidly injecting styrene into three-necked flask using syringe, uniformly stirring to produce vortex, carrying out reflux reaction for period of time, to obtain milky white solution, filtering the resulting mixed emulsion with cotton wool bulky aggregates, transferring into bottles, adding prepared polystyrene emulsion to beaker, placing the beaker in an oven at 70 degrees C until solvent is completely evaporated, to obtain massive white polystyrene template; (ii) adding anhydrous lithium acetate, P123 having poly(ethylene) oxide-poly(p-phenylene oxide)-poly(ethylene) oxide, glacial acetic acid, and isopropanol to round bottom flask, carrying out magnetic stirring until solid dissolved, pipetting the isopropyl titanate into round bottom flask, continuing stirring for certain period of time, to obtain pale yellow homogeneous solution; (iii) injecting step (ii) lithium titanate precursor solution into bulk polystyrene template, completely wetting, placing the solvent evaporation at room temperature, transferring into oven at 70 degrees C for a period of time, carrying out calcination method, removing polystyrene template, to obtain three-dimensional macroporous - mesoporous lithium titanate; and (iv) adding step (iii) prepared three-dimensional macroporous - mesoporous lithium titanate to hydrochloric acid solution, carrying out reaction at constant temperature in an oscillator for period of time, centrifuging the mixture, removing the supernatant, washing the remaining solid with ultrapure water until the supernatant is neutral, drying the washed solid in oven at 70 degrees C, to obtain three-dimensional macroporous-mesoporous lithium ion sieve.