北京大学工学院的侯仰龙教授来访

2015-7-9 16:13:25

报告题目:面向先进能源存储的高性能电极材料

报告人侯仰龙  教授 杰青、长江,北京大学

报告时间711日(星期330

报告地点:物理科技楼101

报告摘要:

Presently, safe energy storage is one of the most demanding technologies by the developing society. In this regard, lithium ion batteries (LIBs) and Supercapacitors (SC) have got tremendous attention due to their high energy and power densities; have been considered as promising power source for future electric vehicles (EVs). Thus, most of the present research is focused to develop new electrode materials that can bring the realization of these devices for EVs. However, structural disintegration, limited access to redox sites and loss of electrical contact have long been identified as primary reasons for capacity loss and poor cyclic life of these materials. Although nanotechnology plays critical role by developing nanostructures but simple reduction in size introduce new fundamental issues like side reactions and thermally less stable. Thus, a careful design that can inhibit the side reaction by surface protection, make all redox sites accessible by increasing the intrinsic conductivity of the active materials, maintain a continues network for ionic and electronic flow and keeps the structural integrity, resulting improved performance and excellent capacity retention with long cyclic life to meet the requirements set by USABC for electrode materials to use them in EVs. Here, we have developed different hybrid structures of metal oxides, nitrides, sulfides, hydroxides and metal alloys with doped graphene to control above mentioned problems and to achieve the goals set by USABC. All these composites possess extraordinary performances as electrodes of LIBs and SC with long cyclic stability and excellent rate capability. The high performance of the composites based on the synergistic effect of several components in the nanodesign. These strategies to combine the different property enhancing factors in one composite with engineered structures will bring the realization of these devices in road market.


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报告人简介侯仰龙,教育部长江学者特聘教授北京大学教授、博士生导师。主要从事多功能磁性材料、新能源材料的控制合成及其在纳米生物医学与能源领域的应用探索研究。发展了单分散磁性纳米材料的通用制备方法,提出了自下而上的纳米耦合磁体化学制备新策略、探索了磁性纳米颗粒在肿瘤等重大疾病的诊断与治疗的应用。迄今发表学术论文100余篇,在国际和各类双边会议上作大会或分会邀请报告30余次。荣获北京市科技新星(2008)、教育部新世纪优秀人才(2009)、北京市优秀人才(2009)、霍英东优秀青年教师奖(2009)、青年科学之星新人奖(2010)、国家杰出青年基金获得者(2011)北京茅以升青年科技奖(2011)、绿叶生物医药杰出青年学者奖(2012)中国化学会-英国皇家化学会青年化学奖(2013)教育部长江学者特聘教授(2014)科技部中青年科技创新领军人才(2014)正主持或参加国家杰出青年基金、国家重大基础研究计划(973)等课题。现任Scientific Reports (NPG)、Advanced Science (Wiley)、Science China MaterialsRare Metals《化学学报》功能材料》等期刊编委,中国材料研究会中国化学会、中国生物材料学会理事中国化学会青年化学工作者委员会副主任委员,中国材料研究会纳米材料与器件分会、中国材料研究会青年委员会副秘书长

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