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基于碳材料的分级孔结构与氧化还原型电解液添加剂的高比能化研究

批准号51602003 学科分类无机非金属能量存储材料 ( E021002 )
项目负责人张忠洁 负责人职称讲师 依托单位安徽大学
资助金额20.00
万元
项目类别青年科学基金项目 研究期限2017 年 01 月 01 日 至
2019 年 12 月 31 日
中文主题词碳材料;层次孔;电解液;氧化还原;高比能
英文主题词Carbon materials;Level hole;The electrolyte;Redox;Ratio can

摘要

中文摘要 超级电容器以其独特的属性和优势,在电动汽车、不间断电源、航空航天等诸多领域显示出广阔的应用前景。目前, 限制超级电容器应用的关键问题之一是其能量密度偏低。本项目拟同时从电极材料和电解液进行优化,以提升超级电容器的能量密度。采用双重模板辅助的炭化路线制备分级孔道的碳材料,对碳材料的结构、孔径分布等进行超电容性能的研究。探索碳材料的结构调控与超电容的有效提升之间的关系;在传统电解液中引入氧化还原型电解液添加剂,形成复合电解液,确定最佳的复合电解液构型。探索电解液中氧化还原型电解质在碳材料中的电化学行为,揭示碳材料的结构、孔径分布与复合电解液之间的作用规律。阐明碳材料的结构、孔径分布与复合电解液中离子尺寸之间的构-效关系。项目的创新点在于同时从碳材料结构和复合电解液进行优化,建立多孔碳材料的高比能化体系,为其在超级电容器器件中的进一步应用奠定基础。
英文摘要 Supercapacitors have shown broad application prospects in electric cars, uninterruptible power supply, aerospace, and many other fields, due to their unique properties and advantages.At present, the key issue that limits the application of supercapacitors is the low energy density, which is thus the crucial project for supercapacitors. The present project is proposed to optimize the electrode materials and electrolytes in the meantime to elevate the energy density of supercapacitors. Using dual-template assisted carbonization method to prepare hierarchical structured carbon materials, and investigate the capacitive behaviors of these carbon materials especially regarding the structures and pore size distribution. Furthermore, the relation between structure manipulation and the capacitive elevation will also be studied. Besides, incorporating redox additives into conventional electrolyte to form mixed electrolyte, and determine the optimum electrolyte configuration. Exploring the electrochemical behaviors of redox additive within carbon materials, and also revealing the rule between the carbon structures, pore size distribution and mixed electrolytes. Moreover, illustrating the structure-performance relationship between the carbon structures, pore size distribution and the ion sizes of mixed electrolytes. The innovation point in this project is the simultaneous optimization of carbon material structure and composite electrolyte and establishing the high energy-density system of porous carbon materials, which will further establish the wide foundation for the application of supercapacitor devices.
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