TOPIC:Polymer Nanocomposites for Energy Storage and Conversion
SPEAKER:Dr. Jikai Yuan（苑金凯 博士），中科院工程塑料重点实验室，中国科学院化学研究所
TIME:May 26 (Thursday)PM14:00
LOCATION:Meeting room of Shanghai Key Lab of Electrical Insulation and Thermal Ageing (3rd Floor, Electrical Insulation Building, North of Building D of Materials)
上海市电气绝缘与热老化重点实验室会议室（绝缘楼3楼，在材料D楼后面）
INVITER:Prof. Pingkai Jiang (江平开 教授)

Polymer Nanocomposites for Energy Storage and Conversion
 
苑金凯
中科院工程塑料重点实验室，中国科学院化学研究所，100090，北京
Email: jkyuan@iccas.ac.cn
 

Combining functional nanoparticles with polymers can create advanced polymer nanocomposites, which are recently arousing considerable interest in the field of energy storage and conversion. For the power energy storage application in dielectric capacitors, we have proposed a concept of “local alignment of conducting nanoparticles” to develop giant-permittivity polymer composites with low losses. Further, near-percolated-networks of reduced graphene oxide were explored in a soft polymer media to achieve a large permittivity variation with mechanical deformation. The resultant materials show a giant electrostrictive coefficient and thus can be used in energy harvester to efficiently convert mechanical energy into electricity. In addition, we have also developed polymer composite fibers to convert thermal energy into mechanical one based on the concept of shape-memory twisted fiber. Our polymer fibers doped by graphene oxide exhibit an ever record mechanical energy density, showing a great promise for the use in miniaturized and strong torsional actuators.
 
苑金凯简介
2006年，北京化工大学，本科
2009年，北京化工大学，硕士
2012年，法国Ecole Centrale Paris，博士
2013-2016， 法国Centre de Recherche Paul Pascal-CNRS， 博士后
 
2016年通过中科院率先行动“百人计划”引进回国，进入中科院化学研究所工程塑料重点实验室工作，任项目研究员，课题组长。长期从事新型能源相关聚合物复合材料的研究工作。迄今为止共发表SCI论文26篇，其中以第一作者或通讯作者在Science，Nature Communications 、Advanced Materials 等顶级期刊上发表SCI论文12篇，并受邀撰写专著章节2部。发表文章共计被Web of Science引用>1100次（Google Scholar引用>1500次），多篇文章入选ESI高引用论文。研究成果被 ScienceDaily、 Phys.org等媒体highlight。美国材料研究学会、英国化学工业协会成员。受邀担任学术期刊包括 Energy & Environmental Science, Carbon, ACS Applied Materials & Interfaces, The Journal of Physical Chemistry, Journal of Materials ChemistryA(C), Applied Physics Letters, Journal of Applied Physics, RSC Advances, 等审稿人。