A non-flammable hydrous organic electrolyte for sustainable zinc batteries

doi:10.1038/s41893-021-00800-9

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	A non-flammable hydrous organic electrolyte for sustainable zinc batteries
	Han, Daliang 1,2; Cui, Changjun 1; Zhang, Kangyu 3; Wang, Zhenxing 1; Gao, Jiachen 1; Guo, Yong 1; Zhang, Zhicheng 1; Wu, Shichao 1; Yin, Lichang 3; Weng, Zhe 1
刊名	NATURE SUSTAINABILITY
	2021-12-02
页码	12
ISSN号	2398-9629
DOI	10.1038/s41893-021-00800-9
通讯作者	Weng, Zhe(zweng@tju.edu.cn) ; Kang, Feiyu(fykang@tsinghua.edu.cn) ; Yang, Quan-Hong(qhyangcn@tju.edu.cn)
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 degrees C to 40 degrees 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. Aqueous Zn batteries offer safety, but the Zn anodes are vulnerable to dendrite failure and side reaction. Here the authors show a low-cost electrolyte that involves hydrate salt and organic solvent but proves inflammable. The Zn battery cell delivers excellent performance even at a low temperature of -30 degrees C.
资助项目	National Natural Science Foundation of China[51972223] ; National Natural Science Foundation of China[51932005] ; National Natural Science Foundation of China[51972312] ; China Postdoctoral Science Foundation[2021M692385] ; Natural Science Foundation of Tianjin[20JCYBJC01550] ; Local Innovative Research Teams Project of Guangdong Pearl River Talents Programme[2017BT01N111]
WOS研究方向	Science & Technology - Other Topics ; Environmental Sciences & Ecology
语种	英语
出版者	NATURE PORTFOLIO
WOS记录号	WOS:000725449500003
资助机构	National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; Natural Science Foundation of Tianjin ; Local Innovative Research Teams Project of Guangdong Pearl River Talents Programme
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/167571]
专题	金属研究所_中国科学院金属研究所
通讯作者	Weng, Zhe; Kang, Feiyu; Yang, Quan-Hong
作者单位	1.Tianjin Univ, Sch Chem Engn & Technol, State Key Lab Chem Engn, Nanoyang Grp, Tianjin, Peoples R China 2.Tsinghua Univ, Tsinghua Shenzhen Int Grad Sch, Shenzhen, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang, Peoples R China 4.Tianjin Univ, Joint Sch Natl Univ Singapore & Tianjin Univ, Int Campus, Fuzhou, Peoples R China
推荐引用方式 GB/T 7714	Han, Daliang,Cui, Changjun,Zhang, Kangyu,et al. A non-flammable hydrous organic electrolyte for sustainable zinc batteries[J]. NATURE SUSTAINABILITY,2021:12.
APA	Han, Daliang.,Cui, Changjun.,Zhang, Kangyu.,Wang, Zhenxing.,Gao, Jiachen.,...&Yang, Quan-Hong.(2021).A non-flammable hydrous organic electrolyte for sustainable zinc batteries.NATURE SUSTAINABILITY,12.
MLA	Han, Daliang,et al."A non-flammable hydrous organic electrolyte for sustainable zinc batteries".NATURE SUSTAINABILITY (2021):12.