气候变化领域集成服务门户(CCPortal): Lithium-activated SnS-graphene alternating nanolayers enable dendrite-free cycling of thin sodium metal anodes in carbonate electrolyte

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DOI	10.1039/d0ee02423f
	Lithium-activated SnS-graphene alternating nanolayers enable dendrite-free cycling of thin sodium metal anodes in carbonate electrolyte
	Liu W.; Chen Z.; Zhang Z.; Jiang P.; Chen Y.; Paek E.; Wang Y.; Mitlin D.
发表日期	2021
ISSN	17545692
起始页码	382
结束页码	395
卷号	14 期号:1
英文摘要	Sodium metal battery (SMB, NMB) anodes can become dendritic due to an electrochemically unstable native Na-based solid electrolyte interphase (SEI). Herein Li-ion activated tin sulfide graphene nanocomposite membrane (A-SnS-G) is employed as an artificial SEI layer, allowing cyclability of record-thin 100 µm Na metal foils. The thin Na metal is prepared by a self-designed metallurgical rolling protocol. A-SnS-G is initially placed onto the polypropylene (PP) separator but becomes in situ transferred onto the Na metal surface. Symmetric metal cells protected by A-SnS-G achieve low-overpotential extended high-rate cycling in a standard carbonate electrolyte (EC?:?DEC = 1?:?1, 5% FEC). Accumulated capacity of 1000 mA h cm-2 is obtained after 500 cycles at 4 mA cm-2, with accumulated capacity-to-foil capacity (A/F) ratio of 90.9. This is among the most favorable cycle life, accumulated capacity, and anode utilization combinations reported. Protection by non-activated SnS-G membrane yields significantly worse cycling, albeit still superior to the baseline unprotected sodium. Post-mortem and dedicated light optical analysis indicate that metal swelling, dendrite growth and dead metal formation is extensive for the unprotected sample, but is suppressed with A-SnS-G. Per XPS, post-100 cycles near-surface structure of A-SnS-G is rich in metallic Sn alloys and inorganic carbonate salts. Even after 300 cycles, Li-based SEI components ROCO2-Li, Li2CO3 and LiF are detected with A-SnS-G. As a proof of principle, an SMB with a high mass loading (6 mg cm-2) NVP cathode and a A-SnS-G protected anode delivered extended cyclability, achieving 74 mA h g-1 after 400 cycles at 0.4C. © The Royal Society of Chemistry.
英文关键词	Anodes; Carbonation; Graphene; IV-VI semiconductors; Layered semiconductors; Lithium-ion batteries; Metals; Polypropylenes; Rolling; Sodium compounds; Solid electrolytes; Solid-State Batteries; Sulfur compounds; Surface structure; Tin alloys; Tin compounds; Carbonate electrolytes; Carbonate salts; Dendrite growth; Graphene nanocomposites; Metal surfaces; Optical analysis; Proof of principles; Solid electrolyte interphase; Lithium compounds; carbonate; electrochemical method; electrode; electrolyte; in situ measurement; lithium; nanoparticle; sodium
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190815
作者单位	Institute of New-Energy and Low-Carbon Technology (INELT), Sichuan University, Chengdu Sichuan, 610065, China; Engineering Research Center of Alternative Energy Materials and Devices, Ministry of Education, Sichuan University, Chengdu Sichuan, 610065, China; Chemical and Biomolecular Engineering, Clarkson University, Potsdam, NY 13699, United States; Materials Science and Engineering Program and Texas Materials Institute, The University of Texas at Austin, Austin, TX 78712, United States
推荐引用方式 GB/T 7714	Liu W.,Chen Z.,Zhang Z.,et al. Lithium-activated SnS-graphene alternating nanolayers enable dendrite-free cycling of thin sodium metal anodes in carbonate electrolyte[J],2021,14(1).
APA	Liu W..,Chen Z..,Zhang Z..,Jiang P..,Chen Y..,...&Mitlin D..(2021).Lithium-activated SnS-graphene alternating nanolayers enable dendrite-free cycling of thin sodium metal anodes in carbonate electrolyte.Energy & Environmental Science,14(1).
MLA	Liu W.,et al."Lithium-activated SnS-graphene alternating nanolayers enable dendrite-free cycling of thin sodium metal anodes in carbonate electrolyte".Energy & Environmental Science 14.1(2021).