Interfacial polarization triggered by glutamate accelerates dehydration of hydrated zinc ions for zinc-ion batteries

Jin, Yan; Chen, Hongzhan; Peng, Linhui; Chen, Zehai; Cheng, Luo; Song, Jidong; Zhang, Hao; Chen, Jian; Xie, Fangyan; Shi, Jifu; Meng, Hui

doi:10.1016/j.cej.2020.127704

Cited by 33 publications

(19 citation statements)

References 46 publications

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“…host ([Zn(H 2 O) 6 ] 2+ →Zn 2+ +6H 2 O). [17,[19][20][21] Thus, the battery system consumes extra energy to expel the Zn 2+ from their surrounding solvation shells, yielding energy losses due to undesirable desolvation process. This also diminishes the Zn 2+ ion migration rate, interfacial charge transfer rate, and modifies the mass transfer behavior of electrolyte solute.…”

Section: Introductionmentioning

confidence: 99%

Construction of Bio‐inspired Film with Engineered Hydrophobicity to Boost Interfacial Reaction Kinetics of Aqueous Zinc–Ion Batteries

Gou

Luo

Zheng

et al. 2022

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Aqueous zinc–ion batteries typically suffer from sluggish interfacial reaction kinetics and drastic cathode dissolution owing to the desolvation process of hydrated Zn2+ and continual adsorption/desorption behavior of water molecules, respectively. To address these obstacles, a bio‐inspired approach, which exploits the moderate metabolic energy of cell systems and the amphiphilic nature of plasma membranes, is employed to construct a bio‐inspired hydrophobic conductive poly(3,4‐ethylenedioxythiophene) film decorating α‐MnO2 cathode. Like plasma membranes, the bio‐inspired film can “selectively” boost Zn2+ migration with a lower energy barrier and maintain the integrity of the entire cathode. Electrochemical reaction kinetics analysis and theoretical calculations reveal that the bio‐inspired film can significantly improve the electrical conductivity of the electrode, endow the cathode–electrolyte interface with engineered hydrophobicity, and enhance the desolvation behavior of hydrated Zn2+. This results in an enhanced ion diffusion rate and minimized cathode dissolution, thereby boosting the overall interfacial reaction kinetics and cathode stability. Owing to these intriguing merits, the composite cathode can demonstrate remarkable cycling stability and rate performance in comparison with the pristine MnO2 cathode. Based on the bio‐inspired design philosophy, this work can provide a novel insight for future research on promoting the interfacial reaction kinetics and electrode stability for various battery systems.

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Section: Introductionmentioning

confidence: 99%

Construction of Bio‐inspired Film with Engineered Hydrophobicity to Boost Interfacial Reaction Kinetics of Aqueous Zinc–Ion Batteries

Gou

Luo

Zheng

et al. 2022

Small

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“…Moreover, EDTA, as a typical coordination agent with abundant oxygen/nitrogen functional groups, would be coordinated with Zn 2+ -ions and regulate the Zn nucleation and growth to enable uniform Zn plating and consequent uniform stripping. [37][38][39] Taking the suppressed corrosion reaction and uniform Zn plating together, improved reversibility of Zn metal electrode can be expected in EDTA-containing electrolyte.…”

Section: Resultsmentioning

confidence: 99%

“…As shown in Figure 1B, EDTA would be absorbed instead of water molecules, thus reducing the direct contact between active Zn and water molecules, and inhibiting corrosion side reactions. Moreover, EDTA, as a typical coordination agent with abundant oxygen/nitrogen functional groups, would be coordinated with Zn 2+ ‐ions and regulate the Zn nucleation and growth to enable uniform Zn plating and consequent uniform stripping 37–39 . Taking the suppressed corrosion reaction and uniform Zn plating together, improved reversibility of Zn metal electrode can be expected in EDTA‐containing electrolyte.…”

Section: Resultsmentioning

confidence: 99%

Reversible aqueous Zn battery anode enabled by a stable complexation adsorbent interface

Cai

Wang

et al. 2022

EcoMat

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Rechargeable aqueous Zn batteries (RAZBs) are highly promising for grid‐scale energy storage systems. Nevertheless, strong water molecule adsorption on Zn electrode provokes undesired corrosion reactions and electrode polarization/dendrite growth, restricting the reversibility of Zn anode and the commercialization of RAZBs. Herein, ethylenediamine tetraacetic acid (EDTA), a typical compounding ingredient, was applied in aqueous ZnSO4 electrolyte to replace the adsorbed water molecules on Zn surface and enabled a stable complexation adsorbent interface. The chemically adsorbed EDTA layer reduced the direct contact between H2O molecules and metallic Zn, and reduced the corrosion rate to more than a half. Moreover, such adsorbent interface featuring abundant oxygen/nitrogen‐based functional groups regulated Zn deposition kinetics and promoted the uniform Zn plating. As consequence, the stable complexation adsorbent interface enabled highly‐reversible Zn stripping/plating behavior for 5000 h under a harsh dynamic measurement that combining eletrochemical cycling at 1 mA cm−2 and 0.5 mAh cm−2 for 72 h and resting for 24 h. The effectiveness of such complexation adsorbent interface was also verified in MnO2||Zn full cells. The complexation interface chemistry demonstrated in this study opened up new avenues for the design of low‐cost and highly reversible Zn metal electrodes towards next‐generation RAZBs.

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“…Besides arginine, 208,209 glutamate has been demonstrated to regulate the structure of hydrated zinc ions. 210…”

Section: A Summary Of Solvation Structure Regulation Strategiesmentioning

confidence: 99%

Strategies of regulating Zn²⁺solvation structures for dendrite-free and side reaction-suppressed zinc-ion batteries

Cao

Zhang

et al. 2022

Energy Environ. Sci.

435

282

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Interfacial polarization triggered by glutamate accelerates dehydration of hydrated zinc ions for zinc-ion batteries

Cited by 33 publications

References 46 publications

Construction of Bio‐inspired Film with Engineered Hydrophobicity to Boost Interfacial Reaction Kinetics of Aqueous Zinc–Ion Batteries

Construction of Bio‐inspired Film with Engineered Hydrophobicity to Boost Interfacial Reaction Kinetics of Aqueous Zinc–Ion Batteries

Reversible aqueous Zn battery anode enabled by a stable complexation adsorbent interface

Strategies of regulating Zn²⁺solvation structures for dendrite-free and side reaction-suppressed zinc-ion batteries

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Interfacial polarization triggered by glutamate accelerates dehydration of hydrated zinc ions for zinc-ion batteries

Cited by 33 publications

References 46 publications

Construction of Bio‐inspired Film with Engineered Hydrophobicity to Boost Interfacial Reaction Kinetics of Aqueous Zinc–Ion Batteries

Construction of Bio‐inspired Film with Engineered Hydrophobicity to Boost Interfacial Reaction Kinetics of Aqueous Zinc–Ion Batteries

Reversible aqueous Zn battery anode enabled by a stable complexation adsorbent interface

Strategies of regulating Zn2+solvation structures for dendrite-free and side reaction-suppressed zinc-ion batteries

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Strategies of regulating Zn²⁺solvation structures for dendrite-free and side reaction-suppressed zinc-ion batteries