插层结构水滑石阵列的合成及超电容性能研究

项目名称： 插层结构水滑石阵列的合成及超电容性能研究

项目编号： No.21201015

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 无机化学

项目作者： 韩景宾

作者单位： 北京化工大学

项目金额： 25万元

中文摘要： 超级电容器作为一种新型的储能器件，因其功率密度高、循环寿命长、绿色环保等优点，已广泛应用于工业大型UPS电源系统、电动汽车及航空航天等领域。发展具有大容量、高能量密度、高稳定性的电极材料是超级电容器研究领域的关键问题。含过渡金属（如Mn、Fe、Co、Ni等）的水滑石类层状材料（LDHs），具有较高的比表面积和电化学活性，是极具发展前景的一类超电容材料。本项目以构筑高性能水滑石基超电容材料为研究目标，围绕此类电极材料的结构设计、制备规律、结构与电化学性能的强化开展基础和应用基础研究。通过调变材料的化学组成、结构和主客体协同作用，研究电解质在电极材料中的传质动力学、电子的传导机制，及其对电极材料电化学性能的影响。通过解决此类超电容材料的可控组装和储能性能中的关键科学问题，构筑具有特色的研究体系，为高性能超级电容器电极材料的结构设计和性能调控提供实验基础和有益探索。

中文关键词： 超级电容器；水滑石；插层结构；阵列；能量存储

英文摘要： The depletion of traditional energy resources as well as global warming evoke considerable attention in developing advanced energy-storage and delivery systems. Electrochemical capacitors (also known as supercapacitors or ultracapacitors), as emerging energy storage devices, have attracted intensive interest due to their high power density, long cycle life, short charging time and good safety record.The rational design of novel electrode based on structural and compositional considerations is highly essential for achieving high-performance supercapacitors. Transition metal-containing layered double hydroxides (LDHs), are promising pseudocapacitive materials owing to their high redox activity, low cost and environmentally friendly nature. This project focuses on the fabrication of high-performance supercapacitor materials based on intercalated LDHs arry and intends to demonstrate the relationship between the structure and performance of the obtained materials. The resulting new type of electrode would possess the following advantages: (i) the well-arrayed electroactive material provides large specific surface area for the redox reaction as well as effective pathway for fast electron transport between electroactive center and current collector; (ii) the enhanced conductivity of the electrode reduces the interfacia

英文关键词： supercapacitor；layered double hydroxides；intercalation structure；array；energy storage