Unveiling the multifunctional regulation effect of a glutamine additive for highly reversible Zn metal anodes

Yin, Junyi; Li, Mingyan; Feng, Xiang; Cui, Tianyi; Chen, Jingzhe; Li, Fuxiang; Wang, Minghui; Cheng, Yonghong; Ding, Shujiang; Xu, Xin; Wang, Jianhua

doi:10.1039/d3ta06593f

Cited by 4 publications

(2 citation statements)

References 41 publications

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“…The 1 H NMR (400 MHz, DMSO-d 6 ) spectrum is depicted in the figure, with an integral ratio of δ 3.41 (s, 1 H) to δ 2.03 (s, 1 H) protons at 1:1. The 19 F NMR (376 MHz, DMSO-d 6 ) spectrum showed an integral of δ-148.62 (d, J = 20.4 Hz) proton at 1. The presence of DMSO solvent and residual water was also confirmed at dw2.49 and dw3.33, respectively.…”

Section: The Chemical Structure Characterization Of [Sbp]bfmentioning

confidence: 99%

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[SBP]BF4 Additive Stabilizing Zinc Anode by Simultaneously Regulating the Solvation Shell and Electrode Interface

Zhang,

Su,

et al. 2024

Batteries

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The zinc anode mainly faces technical problems such as short circuits caused by the growth of dendrite, low coulomb efficiency, and a short cycle life caused by side reactions, which impedes the rapid development of aqueous zinc-ion batteries (AZIBs). Herein, a common ionic liquid, 1,1-Spirobipyrrolidinium tetrafluoroborate ([SBP]BF4), is selected as a new additive for pure ZnSO4 electrolyte. It is found that this additive could regulate the solvation sheath of hydrated Zn2+ ions, promote the ionic mobility of Zn2+, homogenize the flux of Zn2+, avoid side reactions between the electrolyte and electrode, and inhibit the production of zinc dendrites by facilitating the establishment of an inorganic solid electrolyte interphase layer. With the 1% [SBP]BF4-modified electrolyte, the Zn||Zn symmetric cell delivers an extended plating/stripping cycling life of 2000 h at 1 mA cm−2, which is much higher than that of the cell without additives (330 h). As a proof of concept, the Zn‖V2O5 battery using the [SBP]BF4 additive shows excellent cycling stability, maintaining its specific capacity at 97 mAh g−1 after 2000 cycles at 5 A g−1, which is much greater than the 46 mAh g−1 capacity of the non-additive battery. This study offers zinc anode stabilization through high-efficiency electrolyte engineering.

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Section: The Chemical Structure Characterization Of [Sbp]bfmentioning

confidence: 99%

“…), and metal additives (lead and tin). Ionic additives containing heavy metals can cause environmental and electrolyte side reaction issues [19,20]. Inorganic and metal additives have received less research attention due to their limited solubility.…”

Section: Introductionmentioning

confidence: 99%

[SBP]BF4 Additive Stabilizing Zinc Anode by Simultaneously Regulating the Solvation Shell and Electrode Interface

Zhang,

Su,

et al. 2024

Batteries

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Interfacial Dual‐Modulation via Cationic Electrostatic Shielding and Anionic Preferential Adsorption toward Planar and Reversible Zinc Electrodeposition

Tang,

Hu,

et al. 2024

Adv Funct Materials

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Rechargeable aqueous zinc‐ion batteries (ZIBs) with low cost and high safety arouse most promises as next‐generation energy storage configurations. Yet the heterogeneous electric field distributions and interfacial side reactions are considered stumbling roadblocks toward the commercialization of ZIBs. Here, these challenges via cationic electrostatic shielding and anionic preferential adsorption by sodium gluconate (SG) additive are addressed. The polar functional groups (─COO−) of SG anions preferentially anchor to the Zn anode, which can alter Zn2+ migration pathways and restrain side reactions. Moreover, as per the smaller effective reduction potential, the separated cations (Na+) from SG serve as a dynamic armor to provide strong electrostatic shielding effect for uniform Zn2+ deposition on the [002] crystal plane, radically eliminating Zn dendrite growth and promoting anti‐corrosion behaviors of Zn. Consequently, the Zn//Zn symmetric cell with modified electrolyte confers a lifespan of up to 600 h at a high 80% depth of discharge. Furthermore, even under a record‐low negative/positive ratio of 2.11 and lean electrolyte of 30 µL mAh−1, the Zn//VOX full cell remains enhanced capacity retention of 84.37% even after 800 cycles at 1 A g−1. This work develops an interfacial dual‐modulation strategy and provides unique insights to enlighten the practical application of ZIBs.

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A self-regulated interface enabled by trivalent gadolinium ions toward highly reversible zinc metal anodes

Zhang,

Yang,

Liang

et al. 2024

Journal of Colloid and Interface Science

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Unveiling the multifunctional regulation effect of a glutamine additive for highly reversible Zn metal anodes

Abstract: This work proposes glutamine (Gln) as a multifunctional electrolyte additive for highly stable and reversible Zn anodes in aqueous zinc-ion batteries.

Cited by 4 publications

References 41 publications

[SBP]BF4 Additive Stabilizing Zinc Anode by Simultaneously Regulating the Solvation Shell and Electrode Interface

[SBP]BF4 Additive Stabilizing Zinc Anode by Simultaneously Regulating the Solvation Shell and Electrode Interface

Interfacial Dual‐Modulation via Cationic Electrostatic Shielding and Anionic Preferential Adsorption toward Planar and Reversible Zinc Electrodeposition

A self-regulated interface enabled by trivalent gadolinium ions toward highly reversible zinc metal anodes

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