An improved PEG-based molecular crowding electrolyte using Zn(TFSI)2 vs. Zn(OTf)2 for aqueous Zn//V2O5 battery

Ciurduc, Diana Elena; Cruz, Carlos de la; Patil, Nagaraj; Mavrandonakis, Andreas; Marcilla, Rebeca

doi:10.1016/j.mtener.2023.101339

Cited by 10 publications

(2 citation statements)

References 46 publications

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“…It has been reported that Zn‖LMO batteries suffer from severe self-discharge behavior which is mainly caused by re-intercalation of Li + into LMO at the cathode side. 56 We evaluated the influence of PEG and MnSO 4 additives on the self-discharge characteristics of full batteries. Full cells using the three different electrolytes were cycled at 2C for 15 cycles before the self-discharge tests.…”

Section: Resultsmentioning

confidence: 99%

Highly improved aqueous Zn‖LiMn₂O₄ hybrid-ion batteries using poly(ethylene glycol) and manganese sulfate as electrolyte additives

Kong,

Guo,

et al. 2024

Sustainable Energy Fuels

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Section: Resultsmentioning

confidence: 99%

Highly improved aqueous Zn‖LiMn₂O₄ hybrid-ion batteries using poly(ethylene glycol) and manganese sulfate as electrolyte additives

Kong,

Guo,

et al. 2024

Sustainable Energy Fuels

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“…Considering these issues originating from the interaction between water and electrodes, reducing the activity of free water molecules in the electrolyte is an effective approach to avoid unfavorable side reactions. [ 18–21 ] Consequently, multiple classes of next‐generation electrolytes, including molecular crowding electrolytes, [ 22–24 ] hydrated eutectic electrolytes, [ 25–28 ] aqueous/organic hybrid electrolytes, [ 29–31 ] and non‐aqueous electrolytes, [ 32–34 ] have been developed to optimize battery performance via suppression of water activity and formation of a protective solid electrolyte interphase (SEI). By combining an organic species with only a small amount of water, the above methods mitigate issues related to the presence of water but raise other problems, including high cost, high viscosity, low ionic conductivity, and additional safety risks associated with the flammability of organic constituents.…”

Section: Introductionmentioning

confidence: 99%

Chaotropic Salt‐Aided “Water‐In‐Organic” Electrolyte for Highly Reversible Zinc‐Ion Batteries Across a Wide Temperature Range

Wang,

Diao,

Burrow

et al. 2023

Adv Funct Materials

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Aqueous zinc‐ion batteries are promising alternatives to lithium‐ion batteries due to their cost‐effectiveness and improved safety. However, several challenges, including corrosion, dendrites, and water decomposition at the Zn anode, hinder their performance. Herein, an approach is proposed, that deviates from the conventional design by adding water into a propylene carbonate‐based organic electrolyte to prepare a non‐flammable “water‐in‐organic” electrolyte. The chaotropic salt Zn(ClO4)2 exploits the Hofmeister effect to promote the miscibility of immiscible liquid phases. Interactions between propylene carbonate and water restrict water activity and mitigate unfavorable reactions. This electrolyte facilitates preferential Zn (002) deposition and the formation of solid electrolyte interphase. Consequently, the “water‐in‐organic” electrolyte achieves a 99.5% Coulombic efficiency at 1 mA cm−2 over 1000 cycles in Zn/Cu cells, and constant cycling over 1000 h in Zn/Zn symmetric cells. A Na0.33V2O5/Zn battery exhibits impressive cycling stability with a capacity of 175 mAh g−1 for 800 cycles at 2 A g−1. Additionally, this electrolyte enables sustainable cycling across a wide temperature range from −20 to 50 °C. The design of a “water‐in‐organic” electrolyte employing a chaotropic salt presents a potential strategy for high‐performance electrolytes in zinc‐ion batteries with a large stability window and a wide temperature range.

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Self‐Assembled Protection Layer Induced by Bifunctional Additive for Reversible Aqueous Zinc Metal Battery

Li,

Zhang,

et al. 2024

Adv Funct Materials

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Aqueous zinc metal battery (AZMB) has received widespread attention due to the advantages of low cost and high safety. However, challenges of dendritic growth, hydrogen evolution reaction, and other side‐reaction impede the performance of the Zn anode. Herein, 4‐amino‐benzene‐sulfonic acid (ABSA) is proposed as an additive to the ZnSO4 electrolyte for improving the performance of AZMB. Combined analyses of theoretical calculations and experiment results, ABSA assumes a pivotal function in constructing an adsorptive layer, facilitating the subsequent formation of a stable sulfur‐rich solid‐electrolyte interphase (SEI). Consequently, the SEI layer modulates the pathway of Zn2+ electrodeposition/dissolution and effectively hinders the deleterious growth of dendrites and unwanted side reactions. As a result, the Zn||Zn cells stably cycles for 2500 h at 1 mAh cm−2/1 mA cm−2 and over 1000 h at 10 mAh cm−2/10 mA cm−2. Significantly, the pouch cell of Zn||VO2 can obtain the specific capacity of 151 mAh g−1 after 100 cycles. This work may provide a new perspective for designing advanced electrolytes from the prospect of interface protection for the AZMB and other metal ion batteries.

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An improved PEG-based molecular crowding electrolyte using Zn(TFSI)2 vs. Zn(OTf)2 for aqueous Zn//V2O5 battery

Cited by 10 publications

References 46 publications

Highly improved aqueous Zn‖LiMn₂O₄ hybrid-ion batteries using poly(ethylene glycol) and manganese sulfate as electrolyte additives

Highly improved aqueous Zn‖LiMn₂O₄ hybrid-ion batteries using poly(ethylene glycol) and manganese sulfate as electrolyte additives

Chaotropic Salt‐Aided “Water‐In‐Organic” Electrolyte for Highly Reversible Zinc‐Ion Batteries Across a Wide Temperature Range

Self‐Assembled Protection Layer Induced by Bifunctional Additive for Reversible Aqueous Zinc Metal Battery

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An improved PEG-based molecular crowding electrolyte using Zn(TFSI)2 vs. Zn(OTf)2 for aqueous Zn//V2O5 battery

Cited by 10 publications

References 46 publications

Highly improved aqueous Zn‖LiMn2O4 hybrid-ion batteries using poly(ethylene glycol) and manganese sulfate as electrolyte additives

Highly improved aqueous Zn‖LiMn2O4 hybrid-ion batteries using poly(ethylene glycol) and manganese sulfate as electrolyte additives

Chaotropic Salt‐Aided “Water‐In‐Organic” Electrolyte for Highly Reversible Zinc‐Ion Batteries Across a Wide Temperature Range

Self‐Assembled Protection Layer Induced by Bifunctional Additive for Reversible Aqueous Zinc Metal Battery

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Highly improved aqueous Zn‖LiMn₂O₄ hybrid-ion batteries using poly(ethylene glycol) and manganese sulfate as electrolyte additives

Highly improved aqueous Zn‖LiMn₂O₄ hybrid-ion batteries using poly(ethylene glycol) and manganese sulfate as electrolyte additives