文献类型：期刊文献

英文题名：Highly Stable Sodium Batteries Enabled by Functional Ionic Polymer Membranes

作者：Wei, Shuya[1];Choudhury, Snehashis[1];Xu, Jun[2];Nath, Pooja[1];Tu, Zhengyuan[3];Archer, Lynden A.[1]

机构：[1]Cornell Univ, Sch Chem & Biomol Engn, Ithaca, NY 14853 USA;[2]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[3]Cornell Univ, Dept Mat Sci & Engn, Ithaca, NY 14853 USA

年份：2017

卷号：29

期号：12

外文期刊名：ADVANCED MATERIALS

收录：;EI(收录号：20170403287681);WOS:【SCI-EXPANDED(收录号:WOS:000396998800018)】；

基金：S.W. and S.C. contributed equally to this work. The IL polymer synthesis and analysis component of the work was supported by the National Science Foundation, Award No. DMR-1609125. The Na surface protection and electrochemical analysis of Na anodes in high-voltage and high-energy electrochemical cells was supported by the Advanced Research Projects Agency-Energy (ARPA-E) IDEAS program through Award No. DE-AR-0000750. Electron microscopy, X-Ray diffractometry, X-Ray spectroscopy facilities, and optical spectrometers available through the Cornell Center for Materials Research (CCMR) were used for this work (NSF Grant DMR-1120296). S.W. thanks W. Chen and Prof. C. K. Ober in the department of Material Science and Engineering, and Q. Zheng and Prof. G. W. Coates in the Department of Chemistry and Chemical Biology at Cornell University for help with GPC analysis of the polymer IL membranes synthesized in the study.

语种：英文

外文关键词：Anodes - Solid electrolytes - Polymer films - Sodium - Electropolymerization

摘要：A sodium metal anode protected by an ion-rich polymeric membrane exhibits enhanced stability and high-Columbic efficiency cycling. Formed in situ via electropolymerization of functional imidazolium-type ionic liquid monomers, the polymer membrane protects the metal against parasitic reactions with electrolyte and, for fundamental reasons, inhibits dendrite formation and growth. The effectiveness of the membrane is demonstrated using direct visualization of sodium electrodeposition.