A non-flammable hydrous organic electrolyte for sustainable zinc batteries
Han, Daliang1,2; Cui, Changjun1; Zhang, Kangyu3; Wang, Zhenxing1; Gao, Jiachen1; Guo, Yong1; Zhang, Zhicheng1; Wu, Shichao1; Yin, Lichang3; Weng, Zhe1; Kang, Feiyu2; Yang, Quan-Hong1,4
Corresponding AuthorWeng, Zhe( ; Kang, Feiyu( ; Yang, Quan-Hong(
AbstractAqueous 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.
Funding OrganizationNational 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
Indexed BySCI
Funding ProjectNational 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 Research AreaScience & Technology - Other Topics ; Environmental Sciences & Ecology
WOS SubjectGreen & Sustainable Science & Technology ; Environmental Sciences ; Environmental Studies
WOS IDWOS:000725449500003
Citation statistics
Cited Times:212[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorWeng, Zhe; Kang, Feiyu; Yang, Quan-Hong
Affiliation1.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
Recommended Citation
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.
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