气候变化领域集成服务门户(CCPortal): Cation ordered Ni-rich layered cathode for ultra-long battery life

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DOI	10.1039/d0ee03774e
	Cation ordered Ni-rich layered cathode for ultra-long battery life
	Kim U.-H.; Park G.-T.; Conlin P.; Ashburn N.; Cho K.; Yu Y.-S.; Shapiro D.A.; Maglia F.; Kim S.-J.; Lamp P.; Yoon C.S.; Sun Y.-K.
发表日期	2021
ISSN	17545692
起始页码	1573
结束页码	1583
卷号	14 期号:3
英文摘要	Fluorine doping of a compositionally graded cathode, with an average concentration of Li[Ni0.80Co0.05Mn0.15]O2, yields a high discharge capacity of 216 mA h g-1 with unprecedented cycling stability by retaining 78% of its initial capacity after 8000 cycles. The cathode is cycled at 100% depth of discharge (DOD), unlike the currently deployed layered cathode whose DOD is limited to 60-80% to compensate for capacity fading and guarantee the required battery life. Additionally, the capacity and cycling stability of the cathode easily surpass those of the existing state-of-the-art batteries, while achieving the energy density goal of 800 W h kg-1cathode for electric vehicles (EV) with ultra-long cycle life. The structural and chemical stabilities of the cathode were provided by the compositional partitioning and unique microstructure of the compositionally graded cathode combined with the ordered site-intermixing of Li and transition metal (TM) ions discovered via transmission electron microscopy. F doping induced the formation of a 2ahex × 2ahex × chex superlattice from ordered Li occupation in TM slabs and vice versa, which has been proven to be essential for suppressing microcrack formation in deeply charged states, while maintaining the structural stability of the cathode during extended cycling. Furthermore, the proposed cathode allows for the recycling of used EV batteries in energy storage systems, thereby alleviating the negative environmental impact by reducing the CO2 emissions and cost associated with disposing of dead batteries. © 2021 The Royal Society of Chemistry.
英文关键词	Cathodes; Electronic Waste; Energy storage; Environmental impact; High resolution transmission electron microscopy; Lithium; Lithium metallography; Stability; Transition metal compounds; Transition metals; Average concentration; Cycling stability; Depth of discharges; Discharge capacities; Energy storage systems; Microcrack formation; State of the art; Structural stabilities; Secondary batteries; cation; electrode; instrumentation; nickel
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/190755
作者单位	Department of Energy Engineering, Hanyang University, Seoul, 04763, South Korea; Department of Materials Science and Engineering, Department of Physics, University of Texas at Dallas, Richardson, TX 75080, United States; Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, United States; Bmw Group, Petuelring 130, München, 80788, Germany; Department of Materials Science and Engineering, Hanyang University, Seoul, 04763, South Korea
推荐引用方式 GB/T 7714	Kim U.-H.,Park G.-T.,Conlin P.,et al. Cation ordered Ni-rich layered cathode for ultra-long battery life[J],2021,14(3).
APA	Kim U.-H..,Park G.-T..,Conlin P..,Ashburn N..,Cho K..,...&Sun Y.-K..(2021).Cation ordered Ni-rich layered cathode for ultra-long battery life.Energy & Environmental Science,14(3).
MLA	Kim U.-H.,et al."Cation ordered Ni-rich layered cathode for ultra-long battery life".Energy & Environmental Science 14.3(2021).