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物电院:From Cation Electrodes to Anion Electrodes
学术地点 物电学院A栋335学术报告厅 主讲人 纪秀磊,Oregon State University
讲座时间 2019年6月26日14:30

主题:From Cation Electrodes to Anion Electrodes

主讲人:纪秀磊,Oregon State University





讲座摘要:Storage batteries need to be installed at the gigawatt-scale so that they can be competitive to pumped hydro and compressed air storage to facilitate the intermittent solar and wind power. It is the levelized energy cost (LEC) of storage solutions that dictates whether the technology can penetrate the market. To date, a consensus has not been reached about the choice of storage batteries despite the fact that several beyond-lithium batteries have received tremendous attention. To minimize LEC that is a function of capital cost, energy density, and cycle life, one should employ earth-abundant materials and promote the electrochemical performance. Unfortunately, one most significant cost factor that is often left out is the liability, which could cost the whole enterprise. Thus, we hope to choose a family of inherently safe chemistries. During the past several years, we shift our attention to aqueous batteries. The question is which battery chemistry will be the winning one for grid storage. Carrying this question, we did not stick to one charge carrier and design the suitable electrode materials for this particular charge carrier; instead, we often employ the known electrodes to investigate their combinations with different charge carriers. Our goal is, by ‘shopping’ around, to find the scientific problem to address so that we will find the suitable battery chemistries sooner. In this talk, I will introduce examples based on which we conclude that one metric is the crucial factor to decipher the design roadmap for future batteries. I will present our new results on these non-conventional charge carriers, i.e., H+, H3O+, NH4+, Fe2+, and NO3-, and I will talk about how the Grotthuss mechanism works and its implications.

主讲人简介:Prof. Ji Xiulei (纪秀磊) graduated from Jilin University with a B.Sc. in chemistry in 2003. He obtained his Ph.D. degree from the University of Waterloo in 2009. He was an NSERC Postdoctoral Fellow at the University of California, Santa Barbara from 2010 to 2012. Dr. Ji is currently a tenured Associate Professor at the Department of Chemistry, Oregon State University. He has published 106 articles in journals, includingNature Materials, Nature Energy, Nature Chemistry, Nature Commun., JACS, Angew. Chem. His H-index is 45 (Web of Science), and the non-self-citations are more than 12,400 (Web of Science). He received 2016 CAREER Award of National Science Foundation, the DOE Energy Battery500 Seedling Award (2017), the ACS PRF Doctoral New Investigator Award (2015), the Innovation Challenge Award, Natural Sciences and Engineering Research Council of Canada (2010). He is a Scialog Fellow. He received the 2018 Promising Scholar Award of Oregon State University. He serves as an Associate Editor ofCarbon Energy, a new Wiley journal.


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