摘要当今社会，科学的发展日新月异，电池在高科技产业中起到越来越重要的作用。锂电池是一种新型能源，它以无污染、可降低碳排放量、能量密度高等优点，迎来了更广阔的发展空间。传统的并广泛使用的锂电池正极材料主要为LiCoO2和Li-Co-Ni-O系列的电池，但是由于钴的资源匮乏、价格昂贵、且有毒等特性，导致这类电池的发展受到了限制。人们迫切需要一种储量丰富，对环境友好，价格低廉的材料来代替钴系列锂电池。经过长期研究，发现以Ni、Mn代替Co的固溶体多元体系具有优于LiCoO2和LiMnO2材料的特点，LiNi0.5Mn0.5O2材料作为该体系的代表受到了人们的广泛关注, 它原材料经济廉价、资源丰富、对环境友好，其合成与性能的研究已经成为材料领域一个重要的研究方向。67783

本文选取具有层状结构的LiNi0.5Mn0.5O2作为研究对象，使用水热合成法制成，并对其制备方法、合成条件进行了研究，最后对LiNi0.5Mn0.5O2正极材料采用多种方法进行表征。

毕业论文关键字：锂离子电池  正极材料  层状结构  LiNi0.5Mn0.5O2   水热合成 电化学特性

毕业设计说明书（论文）外文摘要

Title    Hydrothermal Synthesis and Performance Analysis of a Nanosized LiNi0.5Mn0.5O2 Cathode Material for High Power Lithium-Ion Batteries                

Abstract：In modern society, with the development of science and technology, battery has become more and more important in high technology. Lithium-ion battery is a new type of energy. It has no pollution and can reduce carbon emissions. Because of all the above advantages, Lithium-ion battery is ushering in a broad space for development. The traditional and widely used lithium battery cathode materials are LiCoO2 and Li-Co-Ni-O series. However due to high cost, toxicity and resource shortage, the development of those types of battery has been limited. Researchers have been searching for the materials which are abundant, environmentally friendly and inexpensive to replace the cobalt series lithium battery. After a long-term study, they found that the solid solution materials mainly containing Ni and Mn was superior to the characteristics of LiCoO2 and LiMnO2 materials. So the new material system like LiNi0.5Mn0.5O2 as the representative of the system has been widely concerned and researched. As it’s inexpensive, beneficial to the environment and abound in natural resources, the research on synthesis and property has been an important research aspect in cathode material field.

This paper selected layered structure LiNi0.5Mn0.5O2  as the object of study, and the preparation methods and synthesis conditions were studied. Besides,   LiNi0.5Mn0.5O2 cathode material were characterized by a variety of ways.

Keywords：lithium-ion battery , cathode material , layered structure , LiNi0.5Mn0.5O2  , hydrothermal synthesis , electrochemical property

目　  次

1 绪论 1

1．1  锂离子电池发展简介 1

1．2  锂离子电池工作原理及特点 3

1．3  正极材料 4

1．4  LiNi0.5Mn0.5O2正极材料研究现状及研究意义 9

1．5  研究目的和内容 10

2 实验方案和实验内容 10

2．1  实验方案思路 10

2．2  实验试剂及仪器设备 10

2．3  样品制备及电池组装