钒氧化物电极材料的制备

摘要本文综述了钒氧化物锂电池电极材料的研究进展，此类材料具有充放电比容量高、成本相对较低廉、热稳定性良好、安全性教高等优点，成为了近年来受到较多关注的电池电极材料。我国具有丰富的钒资源，但综合利用率不高，因此开发具有高容量的钒系化合物作为新型锂离子电池嵌锂材料，对优化我国钒资源利用和促进经济发展都具有重要意义。本论文实验以NH4VO3、反丁烯二酸和LiOH为原料，使用水热法和溶胶-凝胶法，并对其进行改进与优化，成功得到了钒氧化物锂电池电极材料，同时使用XRD表征其结构，分析其组成成分与纯度。使用该材料制作纽扣电池，测定其电化学性能。同时探讨了溶液的pH值和对合成目标产物（钒氧化物）的影响，合成了7种样品，经过对比与整理后，发现使用两步法并使用30%H2O2处理后制备所得样品的电化学性能较好，同时发现采用将原料直接混合用水热法反应所得样品充放电性能不佳。88954

毕业论文关键词：负极材料；钒氧化物电极材料；合成方法；电化学性能

Abstract Vanadium oxide lithium battery electrode materials is reviewed in this paper the research progress of this kind of material has high charge and discharge specific capacity, relatively low cost, good thermal stability, high security teaching, became more attention in recent years the battery electrode material。We have rich vanadium resources in China, but the comprehensive utilization rate is not high, so the development department of vanadium compound with high volume, as a new lithium-ion battery built-in lithium materials, to optimize the vanadium resources and promote the economic development of our country has important significance。This paper experiments with NH4VO3, fumaric acid and LiOH as raw material, using hydrothermal method and sol-gel method, and carries on the improvement and optimization, successfully got the vanadium oxide lithium battery electrode materials, at the same time using XRD characterization of its structure, analysis of the composition and purity。Use the material production button batteries, measure its electrochemical properties。At the same time discusses the pH value of solution and the synthesis of target products (vanadium oxide) and the effect of 7 kinds of synthesized samples, after compared with finishing, found that using two-step and use 30% H2O2 treatment after the preparation of the sample has good electrochemical properties, also found that the mixing the raw materials directly thermal reaction with water from a poor sample charge and discharge performance。

Keyword: negative electrode material; Vanadium oxide electrode materials; synthetic method; electrochemical performance

1 引言 2

2 钒氧化物电极材料研究现状 2

2。1 V2O5电极材料 2

2。2 VO5电极材料 2

2。3 V6O13电极材料 2

3 钒氧化物电极材料的研究进展 2

3。1 钒氧化物电极材料的合成方法 2

3。1。1 溶胶-凝胶法 2

3。1。2 水热法 2

3。1。3 高温固源Q于D优G尔X论V文Y网wwW.yOueRw.com 原文+QQ75201`8766 相法 2

3。2 钒氧化物锂电池电极材料的应用 2

3。3 钒氧化物锂电池电极材料前景展望 2

4 钒氧化物锂电池的合成与表征 2 钒氧化物电极材料的制备:http://www.youerw.com/cailiao/lunwen_172402.html