Aluminum-sulfur composites for LiS batteries with a high-rate performance. (1st May 2019)

• Record Type: Journal Article
• Authors: Zhou, Sophia P.; Lu, Yan-Qiu; Shen, Shou-Yu; Zhang, Shao-Jian; Liu, Wu; Guan, Wan-Bing; Zhou, Xiao-Dong; Li, Jun-Tao; Huang, Ling; Sun, Shi-Gang
• Is Part Of: Composites. Number 164(2019)
• Page Start: 740
• Page End: 746
• Publication Date: 2019-05-01
• Subjects: Composite materials -- Periodicals; Materials science -- Periodicals; Composite materials; Periodicals; Electronic journals; 620.118
• DOI: 10.1016/j.compositesb.2018.09.079
• Languages: English
• ISSNs: 1359-8368

Abstract

Abstract: Over the past few years, lithium sulfur (LiS) batteries have attracted growing attention as an enabling technology because of their high energy density. The limitations to commercialize LiS batteries originate from the intrinsic properties of sulfur: its poor electronic conductivity and the polysulfide shuttling effect. The aim of this research is to address these challenges by developing an additive for LiS batteries. Aluminum (Al) powders prepared from soda cans were mixed with sulfur to form a composite with a sulfur mass loading up to 90 wt%. The electrochemical performance shows that the AlS composite in LiS cells exhibits a stable retention after 200 cycles and an ability to stabilize quickly (<10 cycles). Moreover, the rate performance of the AlS composite is improved over conventional carbon additives. Post analysis suggests that AlS surface interaction is a possible origin for this improvement.