1 Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 Cass Ave, Lemont, IL, 60439, USA.
2 Department of Chemical Engineering & Waterloo Institute of Nanotechnology, University of Waterloo, 200 University Ave West, Waterloo, ON, N2L 3G1, Canada.
3 School of Chemistry and Chemical Engineering, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Normal University, Xinxiang, 453007, China.
4 Department of Mechanical and Industrial Engineering & Department of Civil and Materials Engineering, University of Illinois at Chicago, 842 W. Taylor Street, Chicago, IL, 60607-7022, USA.
5 Department of Chemical and Materials Engineering, Concordia University, 1455 Boulevard de Maisonneuve O, Montréal, QC, H3G 1M8, Canada.

A Lithium-Sulfur Battery using a 2D Current Collector Architecture with a Large-Sized Sulfur Host Operated under High Areal Loading and Low E/S Ratio.

Adv Mater. 2018 Nov;30(46):e1804271

Authors: Li M, Zhang Y, Bai Z, Liu WW, Liu T, Gim J, Jiang G, Yuan Y, Luo D, Feng K, Yassar RS, Wang X, Chen Z, Lu J

Abstract

While backless freestanding 3D electrode architectures for batteries with high loading sulfur have flourished in the recent years, the more traditional and industrially turnkey 2D architecture has not received the same amount of attention. This work reports a spray-dried sulfur composite with large intrinsic internal pores, ensuring adequate local electrolyte availability. This material offers good performance with a electrolyte content of 7 µL mg-1 at high areal loadings (5-8 mg cm-2 ), while also offering the first reported 2.8 µL mg-1 (8 mg cm-2 ) to enter into the second plateau of discharge and continue to operate for 20 cycles. Moreover, evidence is provided that the high-frequency semicircle (i.e., interfacial resistance) is mainly responsible for the often observed bypassing of the second plateau in lean electrolyte discharges.

PMID: 30368935 [PubMed]