WO2020199869A1 - 一种二氧化钛包覆三氧化钼材料及其制备方法与应用 - Google Patents
一种二氧化钛包覆三氧化钼材料及其制备方法与应用 Download PDFInfo
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- WO2020199869A1 WO2020199869A1 PCT/CN2020/078705 CN2020078705W WO2020199869A1 WO 2020199869 A1 WO2020199869 A1 WO 2020199869A1 CN 2020078705 W CN2020078705 W CN 2020078705W WO 2020199869 A1 WO2020199869 A1 WO 2020199869A1
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- titanium dioxide
- molybdenum trioxide
- coated molybdenum
- trioxide material
- moo
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- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/485—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
Description
Claims (10)
- 一种二氧化钛包覆三氧化钼材料的制备方法,其特征在于包括以下步骤:(1)将(NH 4) 6Mo 7O 24·4H 2O溶于去离子水中,搅拌得到溶液A;(2)搅拌下,向步骤(1)所得溶液A中逐滴加入HNO 3,得到溶液B;其中HNO 3与(NH 4) 6Mo 7O 24·4H 2O的质量比为(0.2~0.6):1;(3)搅拌下,向步骤(2)所得溶液B中加入NiTi合金粉末,得到溶液C;(4)将步骤(3)所得溶液C转移到高压反应釜中,90~180℃下反应1~12小时;(5)反应结束冷却至室温后,离心收集步骤(4)所得反应产物,然后将反应产物进行真空干燥,得到片状结构的二氧化钛包覆三氧化钼材料。
- 根据权利要求1所述的一种二氧化钛包覆三氧化钼材料的制备方法,其特征在于,步骤(1)中使用的(NH 4) 6Mo 7O 24·4H 2O为分析纯;步骤(1)、(2)和(3)的搅拌均为磁力搅拌。
- 根据权利要求1所述的一种二氧化钛包覆三氧化钼材料的制备方法,其特征在于,步骤(1)所述的搅拌的速度为100~400转/分钟,所述的搅拌的时间为12~18分钟。
- 根据权利要求1所述的一种二氧化钛包覆三氧化钼材料的制备方法,其特征在于,步骤(2)所述的HNO 3的溶度为30~65%,所述HNO 3的体积占去离子水体积的18~35%。
- 根据权利要求1所述的一种二氧化钛包覆三氧化钼材料的制备方法,其特征在于,步骤(3)所述NiTi粉末的用量为(NH 4) 6Mo 7O 24·4H 2O质量的10~35%。
- 根据权利要求1所述的一种二氧化钛包覆三氧化钼材料的制备方法,其特征在于,步骤(3)所述NiTi粉末的颗粒大小为50~150nm,所述NiTi粉末的形状为球形或近球形,所述NiTi合金成分中Ni的重量百分比为54~56%。
- 根据权利要求1所述的一种二氧化钛包覆三氧化钼材料的制备方法,其特征在于,步骤(5)所述洗涤是用水和乙醇分别洗涤3~5次。
- 根据权利要求1所述的一种二氧化钛包覆三氧化钼材料的制备方法,其特征在于,步骤(5)所述真空干燥的温度为60~80℃,干燥时间为12~24h,干燥的真空度为500~4000Pa。
- 一种二氧化钛包覆三氧化钼材料的制备方法,其特征在于,其由权利要求1-8任一项所述的制备方法制得;片状结构的二氧化钛包覆三氧化钼材料的长和宽范围分别为0.1~2μm和0.1~1μm,厚度为20~100nm;TiO 2包覆层的厚度为4~10nm。
- 权利要求9所述一种二氧化钛包覆三氧化钼材料在二次电池电极材料中应用。
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