Three-functional ether-based co-solvents for suppressing water-induced parasitic reactions in aqueous Zn-ion batteries

Miao, Licheng; Wang, Renheng; Xin, Wenli; Zhang, Lei; Geng, Yaheng; Peng, Huiling; Yan, Zichao; Jiang, Dongting; Qian, Zhengfang; Zhu, Zhiqiang

doi:10.1016/j.ensm.2022.04.032

Cited by 85 publications

(54 citation statements)

References 42 publications

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“…These effects increase the nucleation sites and ultimately promote the formation of an even zinc layer. 55,57…”

Section: Resultsmentioning

confidence: 99%

“…These effects increase the nucleation sites and ultimately promote the formation of an even zinc layer. 55,57 To visualize the inuence of SPS-Zn on the metal Zn electrode, in situ optical microscopy was employed to monitor the electrochemical plating/stripping behavior at the electrode/ electrolyte interface in a transparent symmetrical ZnjjZn cell. As expected, abundant and visible protuberances were formed aer 60 minutes of deposition and they sequentially grew into larger Zn dendrites in LE (Fig.…”

Section: Dendrite Inhibition Mechanism In the Sps-zn Electrolytementioning

confidence: 99%

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Construction of zwitterionic osmolyte-based hydrogel electrolytes towards stable zinc anode for durable aqueous zinc ion storage and integrated electronics

et al. 2022

J. Mater. Chem. A

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“…These effects increase the nucleation sites and ultimately promote the formation of an even zinc layer. 55,57…”

Section: Resultsmentioning

confidence: 99%

Section: Dendrite Inhibition Mechanism In the Sps-zn Electrolytementioning

confidence: 99%

Construction of zwitterionic osmolyte-based hydrogel electrolytes towards stable zinc anode for durable aqueous zinc ion storage and integrated electronics

et al. 2022

J. Mater. Chem. A

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“…The lifespan of the Zn j j Zn cell was extended to 672 h in the Z/G/W electrolyte, which could be attributed to the decreased reactivity of water by G4 participating (Figure S19). [31] More excitingly, the addition of I 2 into the G4-containing electrolyte could further prolong the cycling life of the Zn j j Zn cell to 1800 h. Meanwhile, the voltage hysteresis of the cell in the Z/G/I/W electrolyte is also lower than that obtained in the Z/G/W electrolyte, which should be attributed to the G4-I 2 synergy that decreases the charge transfer resistance of the Zn anode (Figure S20 and Table S2) while increasing the ionic conductivity of the electrolyte (Figure S21). For these reasons, the cell with the Z/G/I/W electrolyte exhibited superior rate capability compared to other electrolytes (Figure S22).…”

Section: Methodsmentioning

confidence: 99%

Boosting Cathode Activity and Anode Stability of Zn‐S Batteries in Aqueous Media Through Cosolvent‐Catalyst Synergy

et al. 2022

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Aqueous ZnÀ S battery with high energy density represents a promising large-scale energy storage technology, but its application is severely hindered by the poor reversibility of both S cathode and Zn anode. Herein, we develop a "cocktail optimized" electrolyte containing tetraglyme (G4) and water as cosolvents and I 2 as additive. The G4-I 2 synergy could activate efficient polar I 3 À /I À catalyst couple and shield the cathode from water, thus facilitating the conversion kinetics of S and suppressing the interfacial side reactions. Simultaneously, it could stabilize Zn anode by forming an organic-inorganic interphase upon cycling. With boosted electrodes reversibility, the ZnÀ S cell delivers a high capacity of 775 mAh g À 1 at 2 A g À 1 , and retains over 70 % capacity after 600 cycles at 4 A g À 1 .The advances can also be readily generalized to other ethers/water hybrid electrolytes, showing the universality of the "cocktail optimized" electrolyte design strategy.

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“…Rechargeable aqueous zinc (Zn) batteries (RAZBs) promise attractive advantages for large-scale energy storage applications, owing to their intrinsic safety, materials abundance, low cost, and environmental compatibility. − In addition, a Zn metal anode has a high theoretical capacity (820 mA h g –1 and 5855 mA h cm –3 ) and aqueous electrolyte features with a high ionic conductivity (>10 mS cm –1 ). , However, the implementation of RAZBs is still hampered by the irreversible issues of Zn anodes involving the water-induced side reactions (H 2 evolution and Zn corrosion) and dendrite growth caused by the tip effect and the uneven distribution of Zn 2+ flux. − The former would induce the continuous consumption of both electrolyte and Zn anode, and the latter inevitably accelerates the parasitic reactions, resulting in low utilization of the Zn anode and short lifespan of the battery. , …”

Section: Introductionmentioning

confidence: 99%

Aqueous Electrolytes with Hydrophobic Organic Cosolvents for Stabilizing Zinc Metal Anodes

et al. 2022

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Rechargeable aqueous zinc (Zn) batteries are promising for large-energy storage because of their low cost, high safety, and environmental compatibility, but their implementation is hindered by the severe irreversibility of Zn metal anodes as exemplified by water-induced side reactions (H 2 evolution and Zn corrosion) and dendrite growth. Here, we find that the introduction of a hydrophobic carbonate cosolvent into a dilute aqueous electrolyte exhibits a much stronger ability to address the reversible issues facing Zn anodes than that with hydrophilic ones. Among the typical carbonates (ethylene carbonate, propylene carbonate, dimethyl carbonate, and diethyl carbonate (DEC)), DEC as the most hydrophobic additive enables the strongest breaking of water's H-bond network and replaces the solvating H 2 O in a Zn 2+ -solvation sheath, which significantly reduces the water activity and its decomposition. Additionally, DEC molecules preferentially adsorb onto the Zn surface to create an H 2 O-poor electrical double layer and render a dendrite-free Zn 2+ -plating behavior. The formulated hybrid 2 m Zn(OTf) 2 + 7 m DEC electrolyte endows the Zn electrode with an ability to achieve high cycling stability (over 3500 h at 5 mA cm −2 with 2.5 mA h cm −2 ) and supports the stable operation of Zn||V 2 O 5 • nH 2 O full battery. This efficient strategy with hydrophobic cosolvent suggests a promising direction for designing aqueous battery chemistries.

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Three-functional ether-based co-solvents for suppressing water-induced parasitic reactions in aqueous Zn-ion batteries

Cited by 85 publications

References 42 publications

Construction of zwitterionic osmolyte-based hydrogel electrolytes towards stable zinc anode for durable aqueous zinc ion storage and integrated electronics

Construction of zwitterionic osmolyte-based hydrogel electrolytes towards stable zinc anode for durable aqueous zinc ion storage and integrated electronics

Boosting Cathode Activity and Anode Stability of Zn‐S Batteries in Aqueous Media Through Cosolvent‐Catalyst Synergy

Aqueous Electrolytes with Hydrophobic Organic Cosolvents for Stabilizing Zinc Metal Anodes

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