Nitroxyl radical triggered the construction of a molecular protective layer for achieving durable Zn metal anodes

Ma, Xipo; Yu, Huaming; Yan, Chunshuang; Chen, Qihao; Wang, Zheng; Chen, Yuejiao; Chen, Gang; Lv, Chade

doi:10.1016/j.jcis.2024.03.085

Cited by 12 publications

(1 citation statement)

References 56 publications

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“…Dendrite formation poses a significant challenge in the design of the Zn anode, as it can greatly diminish the electrochemical reversibility. [29] In addition to effectively suppressing Zn corrosion, the anchored Val molecules on Zn interface also have a significant impact on altering Zn nucleation and promoting even Zn deposition by improving the kinetics of Zn 2 + plating/stripping as ion-transport pumps.…”

Section: Resultsmentioning

confidence: 99%

Achieving Dendrite‐Free Zinc Metal Anodes via Molecule Anchoring and lon‐Transport Pumping

He,

Yu,

Chen

et al. 2024

Chemistry A European J

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The potential for scale‐up application has been acknowledged by researchers for rechargeable aqueous zinc‐ion batteries (ZIBs). Nonetheless, the progress of the development is significantly impeded due to the instability of the interface between the zinc anode and electrolyte. Herein, efficient and environmentally benign valine (Val) were introduced as aqueous electrolyte additive to stabilize the electrode/electrolyte interface (EEI) via functional groups in additive molecules, thus achieving reversible dendrite‐free zinc anode. The amino groups present in Val molecules have a strong ability to adsorb on the surface of zinc metal, enabling the construction of anchored molecular layer on the surface of zinc anodes. The strongly polar carboxyl groups in Val molecules can act as ion‐transport pumps to capture zinc ions in the double electrical layer (DEL) through coordination chemistry. Therefore, this reconstructed EEI could modulate the zinc ion flux and simultaneously suppress side reactions and dendritic growth of Zn. Consequently, a long stable cycling up to 1400 h at a high current density of 20 mA cm‐2 is achieved. Additionally, Zn//V2O5 full cell with Val additive exhibit enhanced cyclability, retaining 77% capacity after 3000 cycles, displaying significant potential in promoting the commercialization of ZIBs.

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Section: Resultsmentioning

confidence: 99%

Achieving Dendrite‐Free Zinc Metal Anodes via Molecule Anchoring and lon‐Transport Pumping

He,

Yu,

Chen

et al. 2024

Chemistry A European J

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Steric hindrance and orientation polarization by a zwitterionic additive to stabilize zinc metal anodes

Wang,

Yu,

Chen

et al. 2024

Carbon Neutralization

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Zinc metal stands out as a promising anode material due to its exceptional theoretical capacity, impressive energy density, and low redox potential. However, challenges such as zinc dendrite growth, anode corrosion, and side reactions in aqueous electrolytes significantly impede the practical application of zinc metal anodes. Herein, 3‐(1‐pyridinio)‐1‐propanesulfonate (PPS) is introduced as a zwitterionic additive to achieve long‐term and highly reversible Zn plating/stripping. Due to the orientation polarization with the force of electric field, PPS additive with π–π conjugated pyridinio cations and strong coordination ability of sulfonate anion tends to generate a dynamic adsorption layer and build a unique water–poor interface. PPS with steric hindrance effect and strong coordination ability can attract solvated Zn2+, thereby promoting the desolvation process. Moreover, by providing a large number of nucleation sites and inducing zinc ion flow, the preferred orientation of the (002) crystal plane can be achieved. Therefore, the interfacial electrochemical reduction kinetics is regulated and uniform zinc deposition is ensured. Owing to these advantages, the Zn//Zn symmetrical cell with PPS additive exhibits remarkable cycling stability exceeding 2340 h (1 mA cm−2 and 1 mA h cm−2). The Zn//V2O5 full cell also delivers stable cycling for up to 6000 cycles.

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N-doped polyacrylonitrile carbon fiber interlayer for uniform and dendrite free Zn metal battery

Mohamed,

Hussain,

Rezaul Karim

et al. 2025

Applied Surface Science

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Nitroxyl radical triggered the construction of a molecular protective layer for achieving durable Zn metal anodes

Cited by 12 publications

References 56 publications

Achieving Dendrite‐Free Zinc Metal Anodes via Molecule Anchoring and lon‐Transport Pumping

Achieving Dendrite‐Free Zinc Metal Anodes via Molecule Anchoring and lon‐Transport Pumping

Steric hindrance and orientation polarization by a zwitterionic additive to stabilize zinc metal anodes

N-doped polyacrylonitrile carbon fiber interlayer for uniform and dendrite free Zn metal battery

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