气候变化领域集成服务门户(CCPortal): Highly stable zinc-iodine single flow batteries with super high energy density for stationary energy storage

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DOI	10.1039/c8ee02825g
	Highly stable zinc-iodine single flow batteries with super high energy density for stationary energy storage
	Xie C.; Liu Y.; Lu W.; Zhang H.; Li X.
发表日期	2019
ISSN	17545692
起始页码	1834
结束页码	1839
卷号	12 期号:6
英文摘要	A zinc-iodine single flow battery (ZISFB) with super high energy density, efficiency and stability was designed and presented for the first time. In this design, an electrolyte with very high concentration (7.5 M KI and 3.75 M ZnBr2) was sealed at the positive side. Thanks to the high solubility of KI, it fully meets the areal capacity of zinc deposition on the negative side. Most importantly, the ZISFB can be charged to nearly 100% state of charge (SOC) or I- can be fully charged to solid state I2 so as to get a maximum energy density. Besides, the blockage of the pump and pipelines on the positive side caused by solid I2 can be inhibited due to the avoidance of electrolyte circulation. Besides, the employment of a highly composite porous polyolefin ion conducting membrane with a super thin Nafion layer effectively improved the membrane selectivity. As a result, the ZISFB demonstrated a CE of 97% and an EE of 81% at a current density of 40 mA cm-2, and the battery could continuously run for more than 500 cycles. The battery demonstrated a high energy density of 205 W h L-1 (theoretical energy density is about 240 W h L-1) (7.5 M KI and 3.75 M ZnBr2 as the electrolyte), which is the highest cycling energy density ever reported. With super high energy density, long cycling life, and a simple structure, a ZISFB becomes a very promising candidate for large scale energy storage and even for power batteries. © 2019 The Royal Society of Chemistry.
英文关键词	Bromine compounds; Electrolytes; Energy storage; Flow batteries; Iodine; Zinc compounds; Electrolyte circulations; High energy densities; High solubility; Ion-conducting membranes; Membrane selectivity; Power batteries; Simple structures; Stationary energy storages; Charging (batteries); concentration (composition); electrolyte; energy efficiency; energy storage; fuel cell; iodine; zinc
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/189895
作者单位	Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China; University of Chinese Academy of Sciences, Beijing, 100039, China; Collaborative Innovation Center of Chemistry for Energy Materials (IChEM), Dalian, 116023, China
推荐引用方式 GB/T 7714	Xie C.,Liu Y.,Lu W.,et al. Highly stable zinc-iodine single flow batteries with super high energy density for stationary energy storage[J],2019,12(6).
APA	Xie C.,Liu Y.,Lu W.,Zhang H.,&Li X..(2019).Highly stable zinc-iodine single flow batteries with super high energy density for stationary energy storage.Energy & Environmental Science,12(6).
MLA	Xie C.,et al."Highly stable zinc-iodine single flow batteries with super high energy density for stationary energy storage".Energy & Environmental Science 12.6(2019).