| 查看: 1520 | 回复: 1 | ||||
Parker一班木虫 (正式写手)
水牛生态学家
|
[交流]
大牛Yet-Ming Chiang最新锂电力作（Chem Mater，2015年9月30日） 已有1人参与
|
|
题目：Supramolecular Perylene Bisimide-Polysulfide Gel Networks as Nanostructured Redox Mediators in Dissolved Polysulfide Lithium–Sulfur Batteries 作者：Peter D. Frischmann†, Laura C. H. Gerber†, Sean E. Doris†⊥, Erica Y. Tsai†, Frank Y. Fan‡, Xiaohui Qu§, Anubhav Jain§, Kristin A. Persson§, Yet-Ming Chiang‡, and Brett A. Helms*† † The Molecular Foundry, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, California 94720, United States ⊥ Department of Chemistry, University of California, Berkeley, California 94720, United States ‡ Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States § Computational Research Division, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, California 94720, United States 摘要：Here we report a new redox-active perylene bisimide (PBI)-polysulfide (PS) gel that overcomes electronic charge-transport bottlenecks common to lithium–sulfur (Li–S) hybrid redox flow batteries designed for long-duration grid-scale energy storage applications. PBI was identified as a supramolecular redox mediator for soluble lithium polysulfides from a library of 85 polycyclic aromatic hydrocarbons by using a high-throughput computational platform; furthermore, these theoretical predictions were validated electrochemically. Challenging conventional wisdom, we found that π-stacked PBI assemblies were stable even in their reduced state through secondary interactions between PBI nanofibers and Li2Sn, which resulted in a redox-active, flowable 3-D gel network. The influence of supramolecular charge-transporting PBI-PS gel networks on Li–S battery performance was investigated in depth and revealed enhanced sulfur utilization and rate performance (C/4 and C/8) at a sulfur loading of 4 mg cm–2 and energy density of 44 Wh L–1 in the absence of conductive carbon additives.  cm-2015.gif |
回复此楼» 本帖附件资源列表
-
欢迎监督和反馈：小木虫仅提供交流平台，不对该内容负责。
本内容由用户自主发布，如果其内容涉及到知识产权问题，其责任在于用户本人，如对版权有异议，请联系邮箱：xiaomuchong@tal.com - 附件 1 : Chang_ChemMater_2015.pdf
2015-09-30 04:42:33, 2.38 M
» 收录本帖的淘帖专辑推荐
 纳米技术与能源及模拟 |
» 猜你喜欢
请问谁有2025最新影响因子Excel表？金币求助！
已经有53人回复
-
氯化钠与有机磺酸分离
已经有1人回复
-
物理化学论文润色/翻译怎么收费?
已经有268人回复
-
瑞典-博后-固态电池-粘结剂-锂离子电池方向
已经有53人回复
-
广东省面上有什么动态么，啥时候公布呀？
已经有1人回复
-
高盐废水电催化氧化，氯离子存在下活性氯副产物、阳极选型的工程困惑
已经有0人回复
-
固相反应中颗粒形貌变化计算模拟学习求助
已经有0人回复
-
电催化氧化技术处理高盐难降解废水具备独特优势
已经有0人回复
  |
2楼2015-10-04 14:08:02
30