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DOI	10.1073/pnas.1620809114
	Ultrathin dendrimer-graphene oxide composite film for stable cycling lithium-sulfur batteries
	Liu W.; Jiang J.; Yang K.R.; Mi Y.; Kumaravadivel P.; Zhong Y.; Fan Q.; Weng Z.; Wu Z.; Cha J.J.; Zhou H.; Batista V.S.; Brudvig G.W.; Wang H.
发表日期	2017
ISSN	0027-8424
起始页码	3578
结束页码	3583
卷号	114 期号:14
英文摘要	Lithium-sulfur batteries (Li-S batteries) have attracted intense interest because of their high specific capacity and low cost, although they are still hindered by severe capacity loss upon cycling caused by the soluble lithium polysulfide intermediates. Although many structure innovations at the material and device levels have been explored for the ultimate goal of realizing long cycle life of Li-S batteries, it remains a major challenge to achieve stable cycling while avoiding energy and power density compromises caused by the introduction of significant dead weight/volume and increased electrochemical resistance. Here we introduce an ultrathin composite film consisting of naphthalimide-functionalized poly(amidoamine) dendrimers and graphene oxide nanosheets as a cycling stabilizer. Combining the dendrimer structure that can confine polysulfide intermediates chemically and physically together with the graphene oxide that renders the film robust and thin (<1% of the thickness of the active sulfur layer), the composite film is designed to enable stable cycling of sulfur cathodes without compromising the energy and power densities. Our sulfur electrodes coated with the composite film exhibit very good cycling stability, together with high sulfur content, large areal capacity, and improved power rate.
英文关键词	Dendrimer; Graphene oxide; Lithium-sulfur battery; Long cycle; Ultrathin composite film
语种	英语
scopus关键词	dendrimer; graphene oxide; lithium; nanosheet; polyamidoamine; sulfide; sulfur; Article; cycling; density; electrode; energy; film; priority journal
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/160647
作者单位	Liu, W., Department of Chemistry and Energy Sciences Institute, Yale University, West Haven, CT 06516, United States; Jiang, J., Department of Chemistry and Energy Sciences Institute, Yale University, West Haven, CT 06516, United States; Yang, K.R., Department of Chemistry and Energy Sciences Institute, Yale University, West Haven, CT 06516, United States; Mi, Y., Department of Chemistry and Energy Sciences Institute, Yale University, West Haven, CT 06516, United States, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China; Kumaravadivel, P., Department of Mechanical Engineering and Materials Science, Yale University, New Haven, CT 06511, United States; Zhong, Y., Department of Chemistry and Energy Sciences Institute, Yale University, West Haven, CT 06516, United States; Fan, Q., Department of Chemistry and Energy Sciences Institute, Yale University, West Haven, CT 06516, United States, School of Chemistry and Chemical Engineering, Southeast University, Nanjing,...
推荐引用方式 GB/T 7714	Liu W.,Jiang J.,Yang K.R.,et al. Ultrathin dendrimer-graphene oxide composite film for stable cycling lithium-sulfur batteries[J],2017,114(14).
APA	Liu W..,Jiang J..,Yang K.R..,Mi Y..,Kumaravadivel P..,...&Wang H..(2017).Ultrathin dendrimer-graphene oxide composite film for stable cycling lithium-sulfur batteries.Proceedings of the National Academy of Sciences of the United States of America,114(14).
MLA	Liu W.,et al."Ultrathin dendrimer-graphene oxide composite film for stable cycling lithium-sulfur batteries".Proceedings of the National Academy of Sciences of the United States of America 114.14(2017).