题目：Conductive metal-organic frameworks for electrochemical energy storage
报告人：冯大卫 博士
时间：9月29日（周六）下午3:30
地点：卢嘉锡楼202报告厅
报告人简介：冯大卫博士2009年本科毕业于北京大学，2010年至2015年在德克萨斯A&M大学攻读博士学位，导师为周宏材教授。博士毕业至今，在斯坦福大学鲍哲南课题组从事博士后研究。冯大卫博士的主要研究工作包括金属有机框架材料、有机无机杂化材料的设计及合成、能量储存等，已在Nature Energy, , J. Am. Chem. Soc.， Angew. Chem. Int. Ed.等国际期刊上发表多篇学术论文。
报告摘要：As electronic technology advances, the need in safe and long-lasting energy storage devices that occupy minimum volume arises. Short charging times of several seconds to minutes, with energy densities comparable to those of batteries, can be achieved in electrochemical capacitors (supercapacitors), in particular pseudocapacitors, which utilize fast redox reactions to store charge and, thus, feature high energy densities. However, metal oxides that are currently used in energy storage technologies have certain limitations. Due to low intrinsic electrical conductivity they might suffer from poor cyclability and deterioration of electrochemical performance for thick electrodes. As an alternative, conductive two-dimensional materials pose particular interest to the researchers owing to impressive areas of electrochemically-active surfaces. Herein, a new family of the conductive 2D MOFs, M-HABs, will be presented as the electrode materials for electrochemical capacitors. A gravimetric capacitance up to 400 F/g of Ni-HAB was demonstrated with a mass loading of 5 mg/cm2, yielding areal capacitance close to 15 F/cm2. Moreover, M-HABs demonstrated excellent cycling stability, which is promising for practical applications.
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