气候变化领域集成服务门户(CCPortal): Extra lithium-ion storage capacity enabled by liquid-phase exfoliated indium selenide nanosheets conductive network

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DOI	10.1039/d0ee01052a
	Extra lithium-ion storage capacity enabled by liquid-phase exfoliated indium selenide nanosheets conductive network
	Zhang C.J.; Liang M.; Park S.-H.; Lin Z.; Seral-Ascaso A.; Wang L.; Pakdel A.; Coileaín C.Ó.; Boland J.; Ronan O.; McEvoy N.; Lu B.; Wang Y.; Xia Y.; Coleman J.N.; Nicolosi V.
发表日期	2020
ISSN	17545692
起始页码	2124
结束页码	2133
卷号	13 期号:7
英文摘要	As a recent addition to the family of van der Waals layered crystals, indium selenide (InSe) possesses unique optoelectronic and photonic properties, enabling high-performance electronic devices for broad applications. Nevertheless, the lithium storage behavior of InSe flakes is thus largely unexplored due to its low electronic conductivity and challenges associated with its exfoliation. Here, we prepare few-layered InSe flakes through liquid-phase exfoliation of wet-chemistry-synthesized layered InSe single crystals, and percolate the flakes with carbon nanotube (CNT) networks in order to form flexible anodes to store lithium (Li). We demonstrate, with the support of CNTs, that exfoliated InSe flakes possess superior Li storage capacity to bulk InSe; the capacity increases over prolonged cycling up to 1224 mA h g-1 from 520 mA h g-1, coupled with excellent rate handling properties and long-term cycling stability. The operando X-ray diffraction results suggest that the alloying of indium with Li dominates the Li storage reactions. By combining with density-functional theory calculations and post-mortem analysis, we believe that the in situ formed indium gradually reduces the domain size, forming nanoclusters which allow the accommodation of 4 Li+ per atomic indium, and leading to extra capacity beyond the traditional theoretical value. This new "nanoscluster alloying"Li storage mechanism may inspire new architectures or methods to synthesize few-layered InSe, thereby presenting broad opportunities for high-performance Li-ion battery anode technologies. © 2020 The Royal Society of Chemistry.
英文关键词	Alloying; Anodes; Carbon nanotubes; Density functional theory; Exfoliation (materials science); Indium compounds; Indium metallography; Lithium-ion batteries; Van der Waals forces; Carbonnanotube network (CNT); Conductive networks; Electronic conductivity; Handling properties; Lithium ion storages; Photonic properties; Post mortem analysis; Theoretical values; Lithium metallography; concentration (composition); crystal structure; equipment component; indium; lithium; nanomaterial
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/189624
作者单位	Swiss Federal Laboratories for Materials Science and Technology (Empa), ETH Domain, Überlandstrasse 129, Dübendorf, CH-8600, Switzerland; CRANN, AMBER Research Centers, Trinity College Dublin, Dublin 2, Ireland; School of Chemistry, Trinity College Dublin, Dublin 2, Ireland; College of Materials Science and Engineering, Sichuan University, Chengdu, 610065, China; School of Physics and Electronics, Hunan University, Changsha, 410082, China; School of Physics, Trinity College Dublin, Dublin 2, Ireland; Department of Chemistry, Shanghai Key Laboratory of Catalysis and Innovative Materials, Center of Chemistry for Energy Materials, Fudan University, Shanghai, 200433, China
推荐引用方式 GB/T 7714	Zhang C.J.,Liang M.,Park S.-H.,et al. Extra lithium-ion storage capacity enabled by liquid-phase exfoliated indium selenide nanosheets conductive network[J],2020,13(7).
APA	Zhang C.J..,Liang M..,Park S.-H..,Lin Z..,Seral-Ascaso A..,...&Nicolosi V..(2020).Extra lithium-ion storage capacity enabled by liquid-phase exfoliated indium selenide nanosheets conductive network.Energy & Environmental Science,13(7).
MLA	Zhang C.J.,et al."Extra lithium-ion storage capacity enabled by liquid-phase exfoliated indium selenide nanosheets conductive network".Energy & Environmental Science 13.7(2020).