Stabilizing zinc anode via a chelation and desolvation electrolyte additive

被引:192
作者
Cao, Jin [1 ,2 ]
Zhang, Dongdong [1 ,2 ]
Chanajaree, Rungroj [2 ]
Yue, Yilei [3 ]
Zeng, Zhiyuan [4 ]
Zhang, Xinyu [3 ]
Qin, Jiaqian [2 ,5 ]
机构
[1] Chulalongkorn Univ, Int Grad Program Nanosci & Technol, Bangkok 10330, Thailand
[2] Chulalongkorn Univ, Met & Mat Sci Res Inst, Bangkok 10330, Thailand
[3] Yanshan Univ, State Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Peoples R China
[4] City Univ Hong Kong, Dept Mat Sci & Engn, Kowloon, 83 Tat Chee Ave, Hong Kong 999077, Peoples R China
[5] Chulalongkorn Univ, Res Unit Adv Mat Energy Storage, Bangkok 10330, Thailand
来源
ADVANCED POWDER MATERIALS | 2022年 / 1卷 / 01期
关键词
Zinc-ion battery; Zinc anode; Dendrites; EDTA-2Na; Desolvation; HIGH-PERFORMANCE; DENDRITE; ZN; HYDROXYAPATITE; PERSPECTIVES; FUNDAMENTALS; DEPOSITION;
D O I
10.1016/j.apmate.2021.09.007
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The uncontrollable dendrites growth and intricately water-induced side reactions occurred on zinc anode leads to safety issues and poor electrochemical kinetics, which largely limit the widespread application of zinc-ion bat-teries (ZIBs). Herein, ethylenediaminetetraacetic acid disodium salt (EDTA-2Na) is utilized as an electrolyte ad-ditive to strengthen the reversibility and cycling stability of zinc anode. Experimental results and theoretical calculation demonstrate that the EDTA-2Na presents a much stronger coordination with Zn2+ when comparing with H2O molecular, implying the EDTA-2Na is capable to enter the solvation shell of [Zn(OH2)6]2+ and coor-dinate with Zn2+ ions, thus achieving a flat and smooth zinc deposition with less by-products (Zn4SO4(OH)6 & BULL;xH2O and H2). Consequently, the zinc symmetric battery with EDTA-2Na additive delivers an excellent cycling stability up to 1800 h under current density of 1 mA cm-2, and the hydrogen evolution reaction (HER), corrosion, by-product issues are significantly inhibited. Moreover, the rate performance and stability of coin-type and pouch-type ZniiMnO2/graphite batteries are significantly boosted via EDTA-2Na additive (248 mAh g-1 at 0.1 A g-1, 81.3% after 1000 cycles at a A g-1). This kind of electrolyte additive with chelation and desolvation functions shed lights on strategies of improving zinc anode stability for further application of ZIBs.
引用
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页数:9
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