气候变化领域集成服务门户(CCPortal): Phenoxazine as a high-voltage p-type redox center for organic battery cathode materials: Small structural reorganization for faster charging and narrow operating voltage

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DOI	10.1039/d0ee01003k
	Phenoxazine as a high-voltage p-type redox center for organic battery cathode materials: Small structural reorganization for faster charging and narrow operating voltage
	Lee K.; Serdiuk I.E.; Kwon G.; Min D.J.; Kang K.; Park S.Y.; Kwon J.E.
发表日期	2020
ISSN	17545692
起始页码	4142
结束页码	4156
卷号	13 期号:11
英文摘要	Although organic p-type cathode materials with high redox potential (>3.5 V vs. Li/Li+) are sustainable alternatives to transition metal oxide cathodes for lithium-ion batteries, only a limited number of these materials have been investigated to date. Therefore, the discovery of new p-type redox centers is essential for further development of successful organic cathodes. Herein, we report phenoxazine (PXZ) as a new p-type redox center for high-voltage cathode materials. Negligible structural reorganization of this PXZ center facilitates a kinetically faster electrochemical pathway, leading to a narrow voltage plateau, full utilization of the capacity, and superior rate capability in a new PXZ-based cathode material, PXZ trimer (3PXZ). The 3PXZ cathode delivered a specific capacity of 112 mA h g-1 at 1C with a high average discharge voltage of 3.7 V vs. Li/Li+ in a Li-organic cell; moreover, even at a high rate of 20C, 73% capacity retention (76 mA h g-1) was achieved. In addition, a 3PXZ composite with mesoporous carbon CMK-3 exhibited a capacity of 100 mA h g-1 with high stability, losing only 0.044% capacity per cycle over 500 cycles at 5C. As 3PXZ outperforms most reported p-type cathodes in terms of both rate capability and stability, we suggest the adoption of the PXZ unit as a novel and promising redox center for high-performance and sustainable energy storage systems. © The Royal Society of Chemistry.
英文关键词	Cathode materials; Charging (batteries); Data storage equipment; Energy storage; Lithium-ion batteries; Redox reactions; Transition metal oxides; Transition metals; Average discharge voltage; Capacity retention; High voltage cathode; Mesoporous carbon CMK-3; Operating voltage; Specific capacities; Structural reorganization; Sustainable energy; Cathodes; alternative energy; composite; electrochemical method; electrode; energy storage; redox potential; transition element
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/189479
作者单位	Center for Supramolecular Optoelectronic Materials (CSOM), Department of Materials Science and Engineering, Research Institute of Advanced Materials (RIAM), Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea; Physics and Informatics, University of Gdańsk, Wita Stwosza 57, Gdańsk, 80-308, Poland; Department of Materials Science and Engineering, Research Institute of Advanced Materials (RIAM), Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 151-742, South Korea; Institute of Engineering Research, College of Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 151-742, South Korea; Center for Nanoparticle Research, Institute of Basic Science, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 151-742, South Korea
推荐引用方式 GB/T 7714	Lee K.,Serdiuk I.E.,Kwon G.,et al. Phenoxazine as a high-voltage p-type redox center for organic battery cathode materials: Small structural reorganization for faster charging and narrow operating voltage[J],2020,13(11).
APA	Lee K..,Serdiuk I.E..,Kwon G..,Min D.J..,Kang K..,...&Kwon J.E..(2020).Phenoxazine as a high-voltage p-type redox center for organic battery cathode materials: Small structural reorganization for faster charging and narrow operating voltage.Energy & Environmental Science,13(11).
MLA	Lee K.,et al."Phenoxazine as a high-voltage p-type redox center for organic battery cathode materials: Small structural reorganization for faster charging and narrow operating voltage".Energy & Environmental Science 13.11(2020).