報(bào)告題目：Rational Electrode Design Principles Beyond Li ion Batteries（鋰離子電池電極材料的理性設(shè)計(jì)）
主講人：Yong-Mook Kang（姜龍默）副教授
報(bào)告時(shí)間：2016年10月31日（周一）上午9:00
報(bào)告地點(diǎn)：四川大學(xué)（望江校區(qū)）beat365235會(huì)議室
Yong-Mook Kang，韓國(guó)東國(guó)大學(xué)能源與材料工程系著名副教授。2004年于Korea Advanced Institute of Science and Technology獲得博士學(xué)位，迄今發(fā)表100多篇相關(guān)期刊論文，包括Chemical Society Reviews, Advanced Energy Materials, Small, Nano Energy等；50多篇國(guó)際會(huì)議論文和數(shù)篇書籍、論文集文章；此外還主編了美國(guó)科學(xué)出版社出版的《金屬氧化物納米材料及應(yīng)用》、《納米科學(xué)和電化學(xué)設(shè)備》等教材。由于在“能源轉(zhuǎn)化&儲(chǔ)存材料”方面的杰出研究成就，他成為首個(gè)榮獲“第三世界（TWAS）青年會(huì)士”稱號(hào)的韓國(guó)人；2010年榮獲澳大利亞研究委員會(huì)國(guó)際合作獎(jiǎng)，2012年榮獲韓國(guó)知識(shí)經(jīng)濟(jì)部世界超級(jí)材料技術(shù)獎(jiǎng)；2015年被選為RSC（英國(guó)皇家學(xué)會(huì)）代表。
講座摘要：
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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