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DOI	10.1038/s41893-021-00800-9
	A non-flammable hydrous organic electrolyte for sustainable zinc batteries
	Han D.; Cui C.; Zhang K.; Wang Z.; Gao J.; Guo Y.; Zhang Z.; Wu S.; Yin L.; Weng Z.; Kang F.; Yang Q.-H.
发表日期	2021
ISSN	2398-9629
英文摘要	Aqueous zinc (Zn) batteries have long been considered a potentially more sustainable alternative to lithium-ion batteries because of their better environmental compatibility, enhanced safety and cost advantage. However, in the presence of an aqueous electrolyte, the Zn anode is poised to undergo dendrite failure, corrosion and hydrogen evolution, all of which resonate with each other leading to fast performance degradation. Here, in a break from the current aqueous battery path, we report a low-cost hydrous organic electrolyte involving a hydrated Zn(BF4)2 salt and an ethylene glycol solvent, which not only promotes the in situ formation of a favourable ZnF2 passivation layer to protect Zn from dendrite growth and side reactions but also embraces excellent non-flammability. Remarkably, the present Zn anode sustains a long-term cycling over 4,000 h at a current density of 0.5 mA cm−2 with a high Coulombic efficiency of 99.4% and shows an areal capacity as high as 5 mAh cm−2. Equally intriguingly, the electrolyte can run across a wide temperature range from −30 °C to 40 °C without seriously compromising performance. The Zn//V2O5 full cells with our electrolyte also perform much better in terms of capacity retention than a device with an aqueous ZnSO4 electrolyte. Our findings suggest a promising direction for developing electrolyte solutions for practical Zn batteries which combine safety, performance and sustainability. © 2021, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	Anodes; Ethylene; Ethylene glycol; Lithium-ion batteries; Organic solvents; Passivation; Sustainable development; Zinc; Zinc compounds; Aqueous electrolyte; Corrosion evolutions; Cost advantages; Environmental compatibility; Failure evolution; Hydrogen-evolution; Non-flammable; Organic electrolyte; Performance degradation; Zinc anodes; Electrolytes
来源期刊	Nature Sustainability
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/249868
作者单位	Nanoyang Group, State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin, China; Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, China; Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, China; Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Fuzhou, China
推荐引用方式 GB/T 7714	Han D.,Cui C.,Zhang K.,et al. A non-flammable hydrous organic electrolyte for sustainable zinc batteries[J],2021.
APA	Han D..,Cui C..,Zhang K..,Wang Z..,Gao J..,...&Yang Q.-H..(2021).A non-flammable hydrous organic electrolyte for sustainable zinc batteries.Nature Sustainability.
MLA	Han D.,et al."A non-flammable hydrous organic electrolyte for sustainable zinc batteries".Nature Sustainability (2021).