Durable modulation of Zn(002) plane deposition<i>via</i>reproducible zincophilic carbon quantum dots towards low N/P ratio zinc-ion batteries

Zhu, Xiangwei; Li, Heng; Liu, Yupeng; Wang, Kexuan; Wang, Huibo; Ge, Mingzheng; Xie, Junpeng; Wen, Zhaorui; Pan, Hong; Qu, Songnan; Liu, Jilei; Zhang, Yanyan; Tang, Yuxin; Chen, Shi

doi:10.1039/d3mh00261f

Cited by 40 publications

(2 citation statements)

References 53 publications

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“…The peak located at 1470 cm À 1 is the stretching vibration peak of C=N in the triazine ring, and the CÀ N stretching vibration peak is at 1245 cm À 1 . While the stretching vibration of CÀ S is around 600~700 cm À 1 , [30] the weak absorption peak of SÀ H is located at 2560 cm À 1 .…”

Section: Surface Analysismentioning

confidence: 99%

Small Organic Molecules with Anchoring Adsorption Enhance Corrosion Inhibition of Zinc Electrodes in ZnSO₄ Medium

Liu,

Guan,

et al. 2024

ChemistrySelect

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In this study, trimercapto‐S‐triazine trisodium salt (TMT) with threefold rotational symmetry as a corrosion inhibitor was introduced into 2 mol ⋅ L−1 ZnSO4 medium. By electrochemical measurements, the corrosion inhibition efficiency of the zinc electrodes was 92.52 % when the concentration of TMT corrosion inhibitor was 2 mmol ⋅ L−1. Based on the microstructural characterization and theoretical analysis of Zn electrodes, it was confirmed that S and N atoms of TMT corrosion inhibitor serve as alternately zinc‐philic adsorption sites with sixfold rotational symmetry for the formation of intermolecular complexes. Adsorption energies of TMT on Zn surfaces were calculated and indicated that the bonds of Zn−N and Zn−S promoted anchoring adsorption on sixfold symmetric (002) plane of zinc. Meanwhile, TMT corrosion inhibitor can adsorb Zn2+ from the electrolyte and directionally deposit them on the surface of Zn (002), effectively avoiding the occurrence of dendrites. This study changes the common knowledge that organic corrosion inhibitors must form hydrophobic films to have corrosion inhibition performance, and provides a new approach for using small organic molecules with anchoring adsorption as metal corrosion inhibitors.

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Section: Surface Analysismentioning

confidence: 99%

Small Organic Molecules with Anchoring Adsorption Enhance Corrosion Inhibition of Zinc Electrodes in ZnSO₄ Medium

Liu,

Guan,

et al. 2024

ChemistrySelect

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“…They not only accelerate reaction kinetics but also provide a certain degree of corrosion protection. The second class involves adding functional electrolyte additives such as binaphthyl sulfonamide, [34] branched dextrin, [35] nitrogen and sulfur co-doped carbon quantum dots (N,S-CDs), [36] which facilitate the formation of an in-situ SEI layer on the surface of the Zn anode, thereby reducing side reactions and homogenizing surface electric fields. Some polymer additives can preferentially adsorb on the Zn anode to form a uniform protective layer and guide Zn nucleation and deposition along the (002) plane.…”

Section: Ultrathin Zn Foil Anodesmentioning

confidence: 99%

Design Strategies toward High‐Utilization Zinc Anodes for Practical Zinc‐Metal Batteries

Xiao,

Yuan,

Xiang

et al. 2024

Chemistry A European J

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Aqueous Zn‐metal batteries (AZMBs) hold a promise as the next‐generation energy storage devices due to their higher specific capacity. However, the actual capacity falls far below the requirements of commercial AZMBs due to the inevitable dendritic growth and side reactions on the surface of Zn anode. Reducing the N/P ratio (negative capacity/positive capacity) is an effective method to achieve high energy density. A significant amount of research has been devoted to increasing the cathode loading and specific capacity to achieve the goal of low N/P batteries. Nevertheless, there is currently a lack of comprehensive overview regarding how to enhance the utilization of the Zn anode to balance the cycle life and energy density of AZMBs. In this review, we summarize the challenges faced in achieving high‐utilization Zn anodes and elaborate on the modifying strategies for the Zn anode to lower the N/P ratio. The current research status and future prospects for the practical application of high‐performance AZMBs are proposed at the end of the review.

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A Double‐Charged Organic Molecule Additive to Customize Electric Double Layer for Super‐Stable and Deep‐Rechargeable Zn Metal Pouch Batteries

Hu,

Lv,

Chen

et al. 2023

Adv Funct Materials

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The electrochemical performance of aqueous zinc metal batteries (AZMBs) is highly dependent on the electric double layer (EDL) properties at Zn electrode/electrolyte interface. Herein, a novel reconfigured EDL is constructed via a double‐charged theanine (TN) additive for super‐stable and deep‐rechargeable AZMBs. Experiments and theoretical computations unravel that the positively charged TN not only serves as preferential anchor to form a water‐poor Helmholtz plane onto the Zn anode, but also its anionic end could coordinate with Zn2+ to tailor the solvation structure in the diffusion layer and further reconstruct the inner H‐bonds networks, thus effectively guiding uniform Zn deposition and suppressing the water‐induced side reactions. Consequently, the Zn//Zn cells acquire outstanding cycling stabilities of nearly 800 h at a high depth of discharge of 80%. Moreover, the Zn//VOX full cells deliver substantial capacity retention (94.12% after 1400 cycles at 2 A g−1) under practical conditions. Importantly, the designed 2.7 Ah Zn//VOX pouch cell harvests a recorded energy density of 42.3 Wh Kgcell−1 and 79.5 Wh Lcell–1, with a remarkable capacity retention of 85.93% after 220 cycles at 50 mA g−1. This innovative design concept to reshape the EDL chemistry would inject fresh vitality into developing advanced AZMBs and beyond.

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Durable modulation of Zn(002) plane depositionviareproducible zincophilic carbon quantum dots towards low N/P ratio zinc-ion batteries

Abstract: Aqueous zinc-ion batteries (ZIBs) are promising candidates for next-generation energy storage systems due to their intrinsic safety, environmental friendliness, and low cost. However, the uncontrollable Zn dendrite growth during cycling...

Cited by 40 publications

References 53 publications

Small Organic Molecules with Anchoring Adsorption Enhance Corrosion Inhibition of Zinc Electrodes in ZnSO₄ Medium

Small Organic Molecules with Anchoring Adsorption Enhance Corrosion Inhibition of Zinc Electrodes in ZnSO₄ Medium

Design Strategies toward High‐Utilization Zinc Anodes for Practical Zinc‐Metal Batteries

A Double‐Charged Organic Molecule Additive to Customize Electric Double Layer for Super‐Stable and Deep‐Rechargeable Zn Metal Pouch Batteries

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Durable modulation of Zn(002) plane depositionviareproducible zincophilic carbon quantum dots towards low N/P ratio zinc-ion batteries

Abstract: Aqueous zinc-ion batteries (ZIBs) are promising candidates for next-generation energy storage systems due to their intrinsic safety, environmental friendliness, and low cost. However, the uncontrollable Zn dendrite growth during cycling...

Cited by 40 publications

References 53 publications

Small Organic Molecules with Anchoring Adsorption Enhance Corrosion Inhibition of Zinc Electrodes in ZnSO4 Medium

Small Organic Molecules with Anchoring Adsorption Enhance Corrosion Inhibition of Zinc Electrodes in ZnSO4 Medium

Design Strategies toward High‐Utilization Zinc Anodes for Practical Zinc‐Metal Batteries

A Double‐Charged Organic Molecule Additive to Customize Electric Double Layer for Super‐Stable and Deep‐Rechargeable Zn Metal Pouch Batteries

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Product

Resources

About

Small Organic Molecules with Anchoring Adsorption Enhance Corrosion Inhibition of Zinc Electrodes in ZnSO₄ Medium

Small Organic Molecules with Anchoring Adsorption Enhance Corrosion Inhibition of Zinc Electrodes in ZnSO₄ Medium