报告题目：Rational Electrode Design Principles Beyond Li ion Batteries（锂离子电池电极材料的理性设计）
Yong-Mook Kang，韩国东国大学能源与材料工程系著名副教授。2004年于Korea Advanced Institute of Science and Technology获得博士学位，迄今发表100多篇相关期刊论文，包括Chemical Society Reviews, Advanced Energy Materials, Small, Nano Energy等；50多篇国际会议论文和数篇书籍、论文集文章；此外还主编了美国科学出版社出版的《金属氧化物纳米材料及应用》、《纳米科学和电化学设备》等教材。由于在“能源转化&储存材料”方面的杰出研究成就，他成为首个荣获“第三世界（TWAS）青年会士”称号的韩国人；2010年荣获澳大利亚研究委员会国际合作奖，2012年荣获韩国知识经济部世界超级材料技术奖；2015年被选为RSC（英国皇家学会）代表。
Modern technology-driven society largely relies on energy storage systems or electric vehicles for eco-friendly transportation and the use of high technology devices. Lithium rechargeable batteries are the most promising power sources because of its high energy density but still have a challenge. Graphite is the most widely used anode material in the field of lithium ion secondary battery due to its many advantages such as good cyclic performances, and high charge/discharge efficiency in the initial cycle. However, its low energy density is preventing the current lithium ion secondary battery from realizing electric vehicles or energy storage systems. So, here we will show two-fold pathways to innovatively enhance the energy density of batteries for large-scale applications.
As a first way to solve this problem, we suggest Si-carbon composite nanofibers(NFs) through electrospinning as a candidate anode for lithium ion secondary battery. Electrospun Si-carbon composite NFs displayed excellent cyclic retention and coulombic efficiency due to amorphous carbon framework accommodating the inherent volume expansion of Si nanoparticles during lithiation as well as the enlarged contact area between active materials and conducting agent attributed to the morphological characteristics of its 1D nanostructure. Actually, lithium-air battery can be the real replacement of lithium ion secondary battery because of its high theoretical specific energy coming up to 11,140 Wh/kg. So, some of important issues related to the cathode of lithium-air battery will be also dealt with in this presentation.
Keywords: Lithium ion secondary battery, Si-Carbon composite nanofibers, Lithium-air battery, Catalyst, Surface Energy.
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