种串珠状钛酸锂纳米颗粒组成的自支撑柔性薄膜及其制备方法

• Format: Patent
• Language: Chinese
• Published: 05.02.2019
• Subjects: BASIC ELECTRIC ELEMENTS; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; NANOTECHNOLOGY; PERFORMING OPERATIONS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING

本发明提供串珠状钛酸锂纳米颗粒组成的自支撑柔性薄膜及其制备方法。该方法包括以下步骤：1)制备氧化钛纳米管阵列，取钛箔表面用碳化硅砂纸打磨并抛光，通过阳极氧化的方法得到氧化钛纳米管阵列，然后置于管式炉在空气条件下热处理；2)取上述阳极氧化并热处理得到的氧化钛纳米管阵列样品放入80ml水热釜中并加入配置的0.5-1mol/L的LiOH溶液，将水热釜置于80～120℃烘箱中10～15h；3)将水热完成的样品干燥并置于管式炉热处理，空气条件下700℃保温3h，随炉自然冷却至室温，获得自支撑柔性薄膜。本发明的制备工艺可靠，能耗低，产率高，所制备的钛酸锂阵列结构明显，颗粒振实密度高，分布均匀，结构参数可控，适用于动力电池电极材料领域。 The invention provides a self-supporting flexible film consisting of bead-like lithium titanate nano-particles and a preparation method thereof. The method comprises the following steps: 1) preparing a titanium oxide nanotube array, taking titanium foils, sanding and polishing the surfaces of the titanium foils with carborundum paper to obtain the titanium oxide nanotube array with an anodizing method, and then putting the titanium oxide nanotube array in a tubular furnace for heat treatment under an air condition; 2) putting the titanium oxide nanotube array sample obtained through anodizing and heat treatment into a hydrothermal kettle of 80 ml, adding a 0.5-1 mol/L of LiOH solution for configurat