Erythritol-strengthen electrolytes effectively improve the electrochemical stability window of aqueous symmetric supercapacitor

Zhang, Shangquan; Li, Qingning; Luo, Ketong; Liu, Zhong; Xiong, Yan; Li, Guangfeng; Zhong, Shengkui; Yan, Dongliang

doi:10.1016/j.matlet.2023.134384

Cited by 1 publication

(1 citation statement)

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“…The broad characteristic peaks from 2750 to 3000 cm −1 reflect the C-H stretching vibrations of erythritol molecules, while the O-H stretching vibrations of H 2 O and erythritol molecules together facilitate a wide peak from 3000 to 3700 cm −1 . The blue shift of the O-H peak can be observed with the addition of erythritol molecules, suggesting that the Et additives can effectively disrupt the hydrogen bond network between H 2 O molecules, greatly inhibit the decomposition of water, and reduce related side reactions [39]. The polarizations in various electrolytes were monitored to estimate the inhibiting effect of Et additives on the hydrogen evolution reaction (HER).…”

Section: Effect Of Et Additives On Deposition and Diffusion Kinetics ...mentioning

confidence: 99%

Erythritol as a Saccharide Multifunctional Electrolyte Additive for Highly Reversible Zinc Anode

Li,

Guo,

et al. 2024

Nanomaterials

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Dendrite formation and water-triggered side reactions on the surface of Zn metal anodes severely restrict the commercial viability of aqueous zinc-ion batteries (AZIBs). In this work, we introduce erythritol (Et) as an electrolyte additive to enhance the reversibility of zinc anodes, given its cost-effectiveness, mature technology, and extensive utilization in various domains such as food, medicine, and other industries. By combining multiscale theoretical simulation and experimental characterization, it was demonstrated that Et molecules can partially replace the coordination H2O molecules to reshape the Zn2+ solvation sheath and destroy the hydrogen bond network of the aqueous electrolyte. More importantly, Et molecules tend to adsorb on the zinc anode surface, simultaneously inhibit water-triggered side reactions by isolating water and promote uniform and dense deposition by accelerating the Zn2+ diffusion and regulating the nucleation size of the Zn grain. Thanks to this synergistic mechanism, the Zn anode can achieve a cycle life of more than 3900 h at 1 mA cm−2 and an average Coulombic efficiency of 99.77%. Coupling with δ-MnO2 cathodes, the full battery delivers a high specific capacity of 228.1 mAh g−1 with a capacity retention of 76% over 1000 cycles at 1 A g−1.

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Section: Effect Of Et Additives On Deposition and Diffusion Kinetics ...mentioning

confidence: 99%

Erythritol as a Saccharide Multifunctional Electrolyte Additive for Highly Reversible Zinc Anode

Li,

Guo,

et al. 2024

Nanomaterials

View full text Add to dashboard Cite

show abstract

Erythritol-strengthen electrolytes effectively improve the electrochemical stability window of aqueous symmetric supercapacitor

Cited by 1 publication

References 8 publications

Erythritol as a Saccharide Multifunctional Electrolyte Additive for Highly Reversible Zinc Anode

Erythritol as a Saccharide Multifunctional Electrolyte Additive for Highly Reversible Zinc Anode

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