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Molecular Synergistic Effects Mediate Efficient Interfacial Chemistry: Enabling Dendrite-Free Zinc Anode for Aqueous Zinc-Ion Batteries
被引:0
|作者:
Li, Yue-Ming
[1
]
Li, Wen-Hao
[2
]
Li, Kai
[3
]
Jiang, Wen-Bin
[1
]
Tang, Yuan-Zheng
[4
]
Zhang, Xiao-Ying
[1
]
Yuan, Hai-Yan
[1
]
Zhang, Jing-Ping
[1
]
Wu, Xing-Long
[2
]
机构:
[1] Jilin Provincial Key Laboratory of Organic Functional Molecular Design & Synthesis, Faculty of Chemistry, Northeast Normal University, Jilin, Changchun,130024, China
[2] MOE Key Laboratory for UV Light-Emitting Materials and Technology, Northeast Normal University, Jilin, Changchun,130024, China
[3] State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Jilin, Changchun,130022, China
[4] College of Electromechanical Engineering, Qingdao University of Science and Technology, Shandong, Qingdao,260061, China
关键词:
The primary cause of the accelerated battery failure in aqueous zinc-ion batteries (AZIBs) is the uncontrollable evolution of the zinc metal-electrolyte interface. In the present research on the development of multiadditives to ameliorate interfaces;
it is challenging to elucidate the mechanisms of the various components. Additionally;
the synergy among additive molecules is frequently disregarded;
resulting in the combined efficacy of multiadditives that is unlikely to surpass the sum of each component. In this study;
the molecular synergistic effect is employed;
which is generated by two nonhomologous acid ester (NAE) additives in the double electrical layer microspace. Specifically;
ethyl methyl carbonate (EMC) is more inclined to induce the oriented deposition of zinc metal by means of targeted adsorption with the zinc (002) crystal plane. Methyl acetate (MA) is more likely to enter the solvated shell of Zn2+ and will be profoundly reduced to produce SEI that is dominated by organic components under the molecular synergistic effect of EMC. Furthermore;
MA persists in a spontaneous hydrolysis reaction;
which serves to mitigate the pH increase caused by the hydrogen evolution reaction (HER) and further prevents the formation of byproducts. Consequently;
the 1E1M electrolyte not only extends the cycle life of the zinc anode to 3140 cycles (1 mA h cm-2 and 1 mA cm-2) but also extends the life of the Zn//MnO2 full battery;
with the capacity retention rate still at 89.9% after 700 cycles. © 2024 American Chemical Society;
D O I:
10.1021/jacs.4c10337
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页码:30998 / 31011
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