首頁  >  學術交流  >  正文
                      學術交流
                      Magnetoresistive Nanocomposites for Electrochemical Energy Storage
                      發布時間:2019-07-03 09:25:24     發布者:徐鵬     瀏覽次數:

                       


                      時間:201973日上午10:00-12:00 

                      地點:武漢大學資源與環境科學學院301會議室

                      報告人:郭占虎教授(美國田納西州大學化學和生物分子工程系)

                      Electrochemical capacitors (ECs) have been in urgent demand for utilizing sustainable and renewable energy sources due to the concerns over both the depletion of fossil fuels and climate changes. However, the current ECs have some challenges, for example, high power but low energy densities for electric double layer capacitors or high energy but low power densities for pseudocapacitors. Main efforts have been focused on developing new electrode materials (for example, highly conductive composites with high capacitance), or designing hierarchical nanomaterials (for example, microstructures with shortened low-resistive pathways for electron transport and ion diffusion). Recently, a small magnetic field of about 0.072 T was reported to significantly enhance the capacitance by 155% in a novel magnetic graphene nanocomposite electrode. However, the measured positive giant magnetoresistance (GMR, a large resistance change upon applying a magnetic field) of the electrode materials failed to interpret the capacitance enhancement. Therefore, how the magnetic field affects the electrochemical energy storage remains unclear. In this talk, the lab-made conductive polymer based- nanocomposites have been designed and synthesized to disclose this puzzle.

                      郭占虎教授簡介:

                      郭占虎,男,博士生導師,美國田納西州大學化學和生物分子工程系副教授,1996年本科畢業于山東科技大學化學工程專業;1999年碩士畢業于北京化工大學化學工程專業;1999-2000在北京化工研究院任工程師設計。2000-2005年博士畢業于美國路易斯安那州立大學化學工程專業;2005-2008年在加利福尼亞大學洛杉磯分校機械和航空航天工程系博士后。2008-2014年在美國德克薩斯州拉馬爾大學任助理教授,2015年至今在美國田納西州大學諾克斯維爾分校任副教授,已在Chemical Society Reviews, Advanced Materials, Advanced Functional Materials, Angewandte Chemie, Energy & Environmental ScienceJournal of Materials Chemistry等國外SCI主流期刊雜志發表研究論文500余篇;擔任Advanced Composites and Hybrid Materials期刊主編和Engineered Science期刊執行主編。

                       

                      信息服務
                      學院網站教師登錄 學院辦公電話 學校信息門戶登錄

                      版權所有 ? 武漢大學資源與環境科學學院
                      地址:湖北省武漢市珞喻路129號 郵編:430079 
                      電話:027-68778381,68778284,68778296 傳真:027-68778893