气候变化领域集成服务门户(CCPortal): DMF stabilized Li3N slurry for manufacturing self-prelithiatable lithium-ion capacitors

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DOI	10.1016/j.scib.2019.11.014
	DMF stabilized Li3N slurry for manufacturing self-prelithiatable lithium-ion capacitors
	Liu C.; Li T.; Zhang H.; Song Z.; Qu C.; Hou G.; Zhang H.; Ni C.; Li X.
发表日期	2020
ISSN	20959273
起始页码	434
结束页码	442
卷号	65 期号:6
英文摘要	Li3N is an excellent zero-residue positive electrode pre-lithiation additive to offset the initial lithium loss in lithium-ion capacitors. However, Li3N has an intrinsic problem of poor compatibility with commonly used aprotic polar solvents in electrode manufacture procedure due to its high reactivity with commonly used solvents like N-methy-2-pyrrolidone (NMP) and etc. It is the Valley of Death between research and large-scale commercialization of Li-ion capacitors using Li3N as prelithiation agent. In this work, Li3N containing electrode is prepared by a commercially adoptable route for the first time, using N,N-dimethylformamide (DMF) to homogenate the electrode slurry. The DMF molecular stabilizing mechanism is confirmed via experiment analysis and DFT simulation, indicating that the dehydrogenation energy for DMF is obviously larger than other commonly used solvents such as NMP and etc. The soft package lithium-ion capacitors (LIC250) with only 12 wt% Li3N addition in AC positive electrode exhibits excellent rate capability, cyclic stability and ultrahigh specific energy. Its specific energy is 2.3 times higher than the Li3N-free devices, with energy retention as high as 90% after 10,000 cycles. © 2019 Science China Press
关键词	High specific energy and long cycle life Li3N Lithium-ion capacitors Pre-lithiation Soft package
英文关键词	Dimethylformamide; Electrodes; Ions; Lithium; Manufacture; Organic solvents; Supercapacitor; Aprotic polar solvents; Experiment analysis; Li3N; Lithium-ion capacitors; Long cycles; N ,N-Dimethylformamide; Positive electrodes; Pre-lithiation; Lithium compounds
语种	英语
来源期刊	Science Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/207125
作者单位	Division of Energy Storage, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China; Solid-state NMR & Catalytic Chemistry Group, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China; Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 200032, China
推荐引用方式 GB/T 7714	Liu C.,Li T.,Zhang H.,et al. DMF stabilized Li3N slurry for manufacturing self-prelithiatable lithium-ion capacitors[J],2020,65(6).
APA	Liu C..,Li T..,Zhang H..,Song Z..,Qu C..,...&Li X..(2020).DMF stabilized Li3N slurry for manufacturing self-prelithiatable lithium-ion capacitors.Science Bulletin,65(6).
MLA	Liu C.,et al."DMF stabilized Li3N slurry for manufacturing self-prelithiatable lithium-ion capacitors".Science Bulletin 65.6(2020).