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摘要锂离子电容器（ Li-ion Capacitor，简称 LIC），一种非常有吸引力的新型能量存储系统，集成了锂离子电池（Lithium ion batteries, 简称LIBS）和超级电容器的优点。相比锂离子电池，它有更高的功率密度，比超级电容器的能量密度也更高。一般来说，LICs主要是由锂离子嵌入型电极和超级电容器的对电极构成。该设备的存储是通过在阴极材料表面上的可逆吸附/解吸反应，并同时利用在阳极材料中的锂离子的可逆插入/脱出反应来实现的。本文讲述了锂离子电容正负极材料的制备，并对其进行XRD、TEM等表征，测试了正负极材料的电化学性能。选出了性能优异的锡氧化物/碳复合材料来作为负极，石墨烯为正极，来组装锂离子电容器，从而进一步分析了所制备的锂离子电容器的电化学性能。42549
关键词 锂离子电容器 锡氧化物/碳材料复合物 石墨烯
毕业论文设计说明书外文摘要
Title The Research on the Preparation and Electrochemical Performance of Tin Oxide / Carbon Composite
Abstract
Li-ion Capacitor，a new type of hybrid Li-ion capacitor (LIC) that integrates the advantages of LIBs and supercapacitors has been proposed which is very attractive as an energy storage system. It has a higher power density and higher energy density than the lithium ion batteries and supercapacitors respectively, and it is one of the best choices for the electric vehicle power supply at this stage. Generally, LICs are constructed with Li-ion intercalating type electrodes on one side and supercapacitors electrodes on the counter side . This device stores charge by a reversible adsorption/desorption reaction of anions on the surface of the cathode material, and the characterization of X-ray Diffraction and Transmission Electron Microscope and electrochemical properties of the electrode materials were tested. We choose the tin oxide/carbon composite material with excellent performance as the anode, and graphene as anode assemble lithium ion capacitor. Furthermore, the electrochemical performance of the lithium ion capacitor was also conducted.
Keyword Li-ion Capacitor tin oxide / carbon composite material graphene
目 次
1 引言 1
1.1 锂离子电容器概述 1
1.2 锂离子电容器的工作原理 2
1.3 锂离子电容器电极材料研究与进展 2
1.3.2 锂离子电容器的负极材料 3
1.3.2.1 石墨 3
1.3.2.2 硬炭 4
1.3.2.3 钛酸锂 4
1.4 本课题的研究意义 4
2 实验部分 6
2.1 原料与试剂 6
2.2 实验仪器 6
2.3 实验方案 6
2.4 实验材料的制备 7
2.4.1 正极材料的制备 7
2.4.2 负极材料的制备 8
2.5 样品材料的结构表征 8
2.6 制备实验样品电池 8
2.7 对实验样品电池进行电化学性能测试 9
3 实验结果分析 10
3.1 锡氧化物/碳复合材料的结构表征 10
3.2 制得的正负极材料的电化学性能