紫菜生物质多孔炭的制备及电化学储能性能的研究
发布时间：2021-10-11 07:37
随着锂离子电池、锂离子电容器和超级电容器等绿色电化学储能装置的快速发展和全球化,人们需要对储能设备的成本,可持续性和环境友好性等方面进行考虑。生物质衍生的碳材料具有丰富的储量,良好的化学稳定性,低成本和优异的电导率等优势,其作为高性能的能量存储材料已被广泛研究。在这项研究中,我们以海藻为碳前驱体,用不同的制备方法制备了具有特殊形貌的生物质衍生碳材料,并将其用作锂离子电池,锂离子混合电容器的正极和负极的新型正极和负极材料,以及用于水性和离子型液体超级电容器的电极材料。详情如下:（1）以海藻为原料,将其热解并随后活化。经过两步合成的海藻衍生的多孔碳,其保留了良好的固有结构,并包含一些源自海藻的氮,氧和硫官能团。该多孔碳为硬碳,保持了海藻样品的原始片状形态,并且材料中具有明显的空腔,由于表面含有丰富的氮和氧官能团,同时该多孔碳具有一定的赝电容效应。此外,我们还研究了样品的合成条件与孔隙率之间的关系。碳化样品在600℃,氮气气氛下,m（KOH）/m（C）,碱碳质量比为3,进一步活化的比表面积为2129 m2 g-1,最大孔体积为1.024 cm3 g-1。在双电层电容器中,两步合成的海藻衍生的...
【文章来源】：北京化工大学北京市 211工程院校 教育部直属院校
【文章页数】：148 页
【学位级别】：硕士
【文章目录】：
学位论文数据集
Abstract
摘要
Chapter 1 Introduction
1.1 Introduction
1.2 Biomass-based carbon materials
1.2.1 Preparation methods of biomass-based porous carbon materials
1.2.1.1 Biomass treatment
1.2.1.2 Activation
1.2.2 Amorphous carbon materials
1.2.3 Pseudo-graphitic carbon materials
1.3 Seaweed-based carbon materials
1.3.1 Introduction to seaweed
1.3.2 Seaweed derived carbon materials
1.3.3 Seaweed-based carbonaceous materials as electrochemical energy storage devices' electrodes
1.4 Supercapacitors
1.4.1 Electric double layer capacitors
1.4.2 Pseudocapacitors
1.4.3 Asymmetric SCs
1.4.4 Hybrid SCs
1.4.5 Distinguishing between pseudocapacitors, asymmetric supercapacitors andhybrid supercapacitors terminologies
1.5 Lithium ion hybrid capacitors
1.5.1 Principles of lithium ion hybrid capacitors
1.5.2 Carbon electrodes for LIHCs
1.5.3 All-Carbon Architectures
1.6 Research significance and research content of the current project
1.7 Main research contents of this project
Chapter 2 Experimental
2.1 Reagents and raw materials
2.2 Experimental instruments and equipment
2.3 Experimental methods
2.3.1 Pyrolysis of dried seaweed
2.3.2 Seaweed alkali treatment
2.3.3 Preparation of seaweed-based porous carbon (two-steps method)
2.3.4 Preparation of porous carbon from alkali treated seaweed (one-step method)
2.4 Experimental flow chart
2.5 Sample characterization equipment and test methods
2.5.1 X-ray diffraction
2.5.2 Phase distribution calculation
2.5.3 Raman spectroscopy
2.5.4 Scanning electron microscopy (SEM)
2.5.5 High resolution transmission electron microscopy (HRTEM)
2.5.6 Specific surface area and pore size distribution test
2.5.7 X-ray photoelectron spectroscopy (XPS)
2.5.8 Real density
2.5.9 Electrical conductivity
2.6 Electrochemical measurements
2.6.1 Supercapacitors
2.6.2 Lithium ion battery and lithium ion hybrid capacitor
Chapter 3 Preparation of two-steps synthesized seaweed-based porous carbons andstudy their performance in supercapacitors
3.1 Introduction
3.2 Results and discussion
3.2.1 Surface morphology
3.2.2 Study of surface crystallinity
3.2.3 Analysis of the pore structure
3.2.4 XRD and Raman analysis
3.2.5 Electrical conductivity
3.2.6 XPS analysis
3.2.7 Analysis of the electrochemical performance of the samples in the aqueous media
3.2.8 Analysis of the electrochemical performance of the samples in the ionic liquid
3.3 Summary of this chapter
Chapter 4 Preparation of one-step synthesized seaweed-based porous carbons andstudy their performance in supercapacitors
4.1 Introduction
4.2 Results and discussion
4.2.1 Surface morphology
4.2.2 Study of surface crystallinity
4.2.3 Analysis of the pore structure
4.2.4 XRD and Raman analysis
4.2.5 XPS analysis
4.2.6 Analysis of the electrochemical performance of the samples in the aqueous media 694.2.7 Analysis of the electrochemical performance of the samples in the ionic liquid
4.2.7 Analysis of the electrochemical performance of the samples in the ionic liquid
4.3 Summary of this chapter
Chapter 5 Seaweed-derived porous carbons as lithium ion battery anode and cathode,and lithium-ion hybrid capacitor electrodes
5.1 Introduction
5.2 Results and discussion
5.2.1 Electrochemical evaluation of lithium-ion battery cathode half-cells
5.2.2 Electrochemical evaluation of lithium-ion battery anode half-cells
5.2.3 Hybrid asymmetric lithium ion capacitors based on ASW electrodes
5.3 Summary of this chapter
Chapter 6 Conclusion
References
Acknowledgments
Research results and published academic papers
Brief introduction of the author and mentor
北京化工大学硕士研究生学位论文答辩委员会决议书
本文编号：3430078
【文章来源】：北京化工大学北京市 211工程院校 教育部直属院校
【文章页数】：148 页
【学位级别】：硕士
【文章目录】：
学位论文数据集
Abstract
摘要
Chapter 1 Introduction
1.1 Introduction
1.2 Biomass-based carbon materials
1.2.1 Preparation methods of biomass-based porous carbon materials
1.2.1.1 Biomass treatment
1.2.1.2 Activation
1.2.2 Amorphous carbon materials
1.2.3 Pseudo-graphitic carbon materials
1.3 Seaweed-based carbon materials
1.3.1 Introduction to seaweed
1.3.2 Seaweed derived carbon materials
1.3.3 Seaweed-based carbonaceous materials as electrochemical energy storage devices' electrodes
1.4 Supercapacitors
1.4.1 Electric double layer capacitors
1.4.2 Pseudocapacitors
1.4.3 Asymmetric SCs
1.4.4 Hybrid SCs
1.4.5 Distinguishing between pseudocapacitors, asymmetric supercapacitors andhybrid supercapacitors terminologies
1.5 Lithium ion hybrid capacitors
1.5.1 Principles of lithium ion hybrid capacitors
1.5.2 Carbon electrodes for LIHCs
1.5.3 All-Carbon Architectures
1.6 Research significance and research content of the current project
1.7 Main research contents of this project
Chapter 2 Experimental
2.1 Reagents and raw materials
2.2 Experimental instruments and equipment
2.3 Experimental methods
2.3.1 Pyrolysis of dried seaweed
2.3.2 Seaweed alkali treatment
2.3.3 Preparation of seaweed-based porous carbon (two-steps method)
2.3.4 Preparation of porous carbon from alkali treated seaweed (one-step method)
2.4 Experimental flow chart
2.5 Sample characterization equipment and test methods
2.5.1 X-ray diffraction
2.5.2 Phase distribution calculation
2.5.3 Raman spectroscopy
2.5.4 Scanning electron microscopy (SEM)
2.5.5 High resolution transmission electron microscopy (HRTEM)
2.5.6 Specific surface area and pore size distribution test
2.5.7 X-ray photoelectron spectroscopy (XPS)
2.5.8 Real density
2.5.9 Electrical conductivity
2.6 Electrochemical measurements
2.6.1 Supercapacitors
2.6.2 Lithium ion battery and lithium ion hybrid capacitor
Chapter 3 Preparation of two-steps synthesized seaweed-based porous carbons andstudy their performance in supercapacitors
3.1 Introduction
3.2 Results and discussion
3.2.1 Surface morphology
3.2.2 Study of surface crystallinity
3.2.3 Analysis of the pore structure
3.2.4 XRD and Raman analysis
3.2.5 Electrical conductivity
3.2.6 XPS analysis
3.2.7 Analysis of the electrochemical performance of the samples in the aqueous media
3.2.8 Analysis of the electrochemical performance of the samples in the ionic liquid
3.3 Summary of this chapter
Chapter 4 Preparation of one-step synthesized seaweed-based porous carbons andstudy their performance in supercapacitors
4.1 Introduction
4.2 Results and discussion
4.2.1 Surface morphology
4.2.2 Study of surface crystallinity
4.2.3 Analysis of the pore structure
4.2.4 XRD and Raman analysis
4.2.5 XPS analysis
4.2.6 Analysis of the electrochemical performance of the samples in the aqueous media 694.2.7 Analysis of the electrochemical performance of the samples in the ionic liquid
4.2.7 Analysis of the electrochemical performance of the samples in the ionic liquid
4.3 Summary of this chapter
Chapter 5 Seaweed-derived porous carbons as lithium ion battery anode and cathode,and lithium-ion hybrid capacitor electrodes
5.1 Introduction
5.2 Results and discussion
5.2.1 Electrochemical evaluation of lithium-ion battery cathode half-cells
5.2.2 Electrochemical evaluation of lithium-ion battery anode half-cells
5.2.3 Hybrid asymmetric lithium ion capacitors based on ASW electrodes
5.3 Summary of this chapter
Chapter 6 Conclusion
References
Acknowledgments
Research results and published academic papers
Brief introduction of the author and mentor
北京化工大学硕士研究生学位论文答辩委员会决议书
本文编号：3430078
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