摘要锂离子电池因其具有某些突出优点，已成为当前研究热点。二氧化钼作为一种独特的过渡金属氧化物，是一种很有发展潜力的锂离子电池负极材料。本论文通过溶液静电纺丝技术和多次高温煅烧工艺来制备复合材料。以1:1的PVA和AMT为原料在15KV的电压下通过高压静电纺丝装置制成纳米纤维前驱体薄膜；再在气氛为N2/H2（体积流量比为5:1）的还原气氛下从室温升温到350℃，保温1小时，之后升温至500℃，保温2小时，升温速率为5℃/min，来制得二氧化钼纤维；之后再通过管式炉和马弗炉高温煅烧工艺制得多级二氧化钼纳米结构。并通过SEM、XRD、TGA、电池测试仪等检测手段优化纺丝纤维形貌及性能。46704

毕业论文关键词：负极材料；MoO2;纺丝纤维

Abstract

Lithium ion batteries because of its some outstanding advantages, has become a current research hot spot. Molybdenum dioxide as a unique transition metal oxides, is a development potential of lithium ion battery anode material. Have asked by solution electrostatic spinning technology and many high temperature calcination process for the preparation of composite materials. In a 1:1 PVA and AMT as raw materials under 15 kv voltage by high voltage electrostatic spinning device made of non-woven fabric, Again in the atmosphere of N2 / H2 (volume flow ratio of 5:1) under the reducing atmosphere of from room temperature to heat up to 350 ℃, the heat preservation for 1 hour, after the temperature to 500 ℃, 2 hours heat preservation, heating rate of 5 ℃ / min, to produce spinning fiber; Then through the tube furnace and muffle furnace high temperature calcination process was multistage nanostructures. And by SEM, XRD, TGA, battery tester detection means such as optimizing spinning fiber morphology and performance. 

Keyword: Anode material; MoO2; Spinning fiber

目    录

1 绪论 5

1.1 引言 5

1.2 锂离子电池概述 5

1.2.1 锂离子电池简介 5

1.2.2 锂离子电池的工作原理 6

1.3 过渡金属氧化物简介 6

1.4 纳米结构负极材料的研究现状 7

1.5 二氧化钼材料简介 7

1.6 高压静电纺丝法简介 8

1.7 多级复合结构优势 10

2 实验部分 10

2.1 实验原料 10

2.2 实验设备 10

2.3 材料的制备 11

2.3.1 高压静电纺丝前驱体溶液的制备 11

2.3.2 无纺布的制备 11

2.3.3 涂膜样品的制备 12

2.3.4 MoO2和碳复合纳米纤维负极材料的制备 12 二氧化钼多级纳米结构的制备及其性能研究:http://www.751com.cn/huaxue/lunwen_48473.html