摘要:金属有机骨架材料具有超高的比表面积、结构多样性和多孔性等优点，使其在电化学储能材料方面具有很大的发展潜力，但是MOFs的导电性一般不是很好。将MOFs与导电性三维石墨烯（3DGN）复合并热解煅烧制备纳米多孔金属氧化物与3DGN的复合材料是当前电化学储能材料研究领域的前沿。

本文以经典MOF普鲁士蓝（PB）为前驱体，与3DGN复合制备PB-3DGN，并以此为牺牲模板通过热解煅烧制备FeOX-3DGN复合材料，研究其电化学储能性能。

首先制备普鲁士蓝（PB）颗粒，与3DGN复合制备PB-3DGN，对其进行350℃煅烧转化为FeOX-3DGN。对制备出的PB颗粒、FeOX、PB-3DGN以及FeOX-3DGN进行XRD、SEM等表征分析，并组装电池进行了循环伏安(CV)、充放电循环性能、倍率性能和阻抗谱等电化学性能测试。控制合成的FeOX-3DGN显示出较好的锂电性能，循环充放电50圈后，比容量还能保持在566.2mAh/g。与二维石墨烯相比，具有多孔连通网络结构的三维石墨烯基复合材料FeOX-3DGN具有优异的导电性和自支撑性，并且石墨烯和多孔FeOX之间的紧密接触以及丰富的应力缓冲可有效提高金属氧化物应用于锂离子电池负极材料时的循环稳定性。

关键字：普鲁士蓝；三维石墨烯；金属氧化物；电化学性能

Abstract:The metal organic skeleton material has the advantages of high specific surface area, structural persity and porosity, which makes it have great potential for development in electrochemical energy storage materials, but the conductivity of MOFs is not very good. The composite of MOFs with conductive three-dimensional graphene (3DGN) and calcined to prepare nanoporous metal oxide and 3DGN composites is the frontier of the field of electrochemical energy storage materials research.

In this paper, PB-3DGN composites were prepared by using classical MOF Prussian blue (PB) as precursors, and FeOX-3DGN composites were prepared by calcined. The electrochemical energy storage properties of FeOX-3DGN composites were studied.

The Prussian blue (PB) particles were first prepared and then adhered to 3DGN, and calcined at 350℃ for activation to FeOX. The structure of the prepared PB particles and FeOX and PB-3DGN and FeOX-3DGN were characterized by XRD and SEM. The battery was subjected to cyclic voltammetry (CV), charge and discharge cycle performance, magnification performance and impedance spectroscopy. FeOX-3DGN showed better lithium performances based on electrochemical test. Cycle charge and discharge 50 laps, the specific capacity can be maintained at 566.2 mAh/g. Compared with the two-dimensional graphene, the FeOX-3DGN complex based three-dimensional graphene with porous communication network structure has excellent electrical conductivity and self-standing property, and the close contact between graphene and porous FeOX and the rich stress buffer can be effectively improve the cycle stability of metal oxide used as anode material of lithium-ion battery .

Keywords: Prussian Blue; Lithium Ion Battery; 3DGN; Electrochemical Performance; Metal Oxide

目录

第一章绪论 1

1.1锂离子电池概述 1

1.1.1锂离子的工作原理 2

1.1.2锂离子电池负极材料 3

1.2三维石墨烯 4

1.2.1三维石墨烯的基本概念与制备方法 4

1.2.2三维石墨烯基复合材料的制备及电化学性能研究 5

1.3普鲁士蓝 6

1.3.1普鲁士蓝简介 6

1.3.2普鲁士蓝在锂电池中的应用 6

1.4本论文研究内容 7

第二章实验部分 8

2.1实验仪器和药品 8

2.1.1实验仪器 8

2.1.2试验药品 8

2.2样品及电极的制备过程 8

2.3扣式电池的组装 10

2.4材料的表征 12

2.4.1X射线衍射分析（XRD） 12

2.4.2扫描电子显微镜（SEM） 12

2.4.3X射线光电子能谱（XPS） 12

2.4.4电化学性能测试 12

第三章实验结果与讨论 14