Achieving high-rate and high-capacity Zn metal anodes<i>via</i>a three-in-one carbon protective layer

Qin, Hongyu; Kuang, Wei; Huang, Dan; Zhang, Xiaoyan; Liu, Jian; Li, Yi; Shen, Fang; Wei, Zongwu; Huang, Yanping; Xu, Jing; He, Huibing

doi:10.1039/d2ta04875b

Cited by 41 publications

(20 citation statements)

References 70 publications

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“…† Briey, the semicircle can be on behalf of the interfacial resistance related to ion transport through the surface layer. 36,37 Our symmetric cell with NaPF-K electrolyte obtains a low electron transfer impedance of This journal is © The Royal Society of Chemistry 2022 1.83 kU, which is smaller than that of the cell with NaPF electrolyte (2.28 kU). This behavior indicates that the cell using the NaPF-K electrolyte presents a more rapid electron interfacial transport rate than the NaPF electrolyte.…”

Section: Resultsmentioning

confidence: 88%

Salt engineering toward stable cation migration of Na metal anodes

Sun

et al. 2022

J. Mater. Chem. A

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Section: Resultsmentioning

confidence: 88%

Salt engineering toward stable cation migration of Na metal anodes

Sun

et al. 2022

J. Mater. Chem. A

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“…[8,9] In addition, these artificial coating layer could exacerbate the side reactions due to the sluggish mass transport kinetics across the anode interface. [10] Another effective method for regulating the interface chemistry is electrolyte optimization. [11] By introducing the super-concentration "water-in-salts" or co-solvent electrolytes, [12] the coordination environment of the hydrated Zn 2+ has been altered, and the activity of H 2 O molecules can be decreased, thus alleviating the H 2 O-induced side reactions and consequently improving the rechargeability of the Zn anodes.…”

Section: Introductionmentioning

confidence: 99%

Building Metal‐Molecule Interface towards Stable and Reversible Zn Metal Anodes for Aqueous Rechargeable Zinc Batteries

Qin

Kuang

et al. 2022

Adv Funct Materials

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139

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Aqueous zinc ion batteries (AZIBs) are receiving increasing attention for large-scale energy storage systems owing to their appealing features with intrinsic safety, low cost, and scalability. Unfortunately, the water-induced parasitic reactions and dendrite growth on the Zn anode severely impede the further development of AZIBs. Herein, a thiourea additive is introduced into ZnSO 4 electrolyte to construct unique metal-molecule interface for simultaneously regulating the Zn anode interface chemistry and the bulk electrolyte environment. Experimental results and theoretical calculations reveal that the formed metal-molecule interface can not only serve as a corrosion inhibitor for alleviating the water-induced side reactions, but also act as a Zn 2+ ion regulator for promoting the homogenous Zn deposition, thus achieving a corrosion-free and dendrite-free Zn anode. Consequently, the Zn|Zn symmetric cell exhibits an extended lifespan of 1200 h at 1 mA cm -2 , 1mAh cm -2 , and a high cumulative capacity of 3000 mAh cm -2 at 10 mA cm -2 . When paired with V 2 O 5 cathode, the Zn|V 2 O 5 full cell delivers a high capacity retention of 76.0% after 1000 cycles at 1 A g -1 . This study paves a new way to modulate Zn electrode interface chemistry by the novel design of metal-molecule interface for advanced rechargeable Zn metal batteries and beyond.

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“…The corrosion current of the Zn electrode is lower in the ZnHAP/BC battery system (4.66 µA) than that in the typical GF battery system (8.23 µA), and the corrosion potential turns to be more positive, implying the alleviated interfacial side‐reactions triggered by the active H 2 O. [ 17 ] Besides, electric double‐layer capacitance (EDLC) of the Zn anodes with GF or ZnHAP/BC separator was measured in symmetrical Zn|Zn cells to further elaborated the enhanced interfacial stability. As shown in Figure S10 (Supporting Information), the EDLC calculated by the equation of C = i c / v remarkably reduced from 48.47 to 17.8 µF cm −2 with ZnHAP/BC used as the separator, suggesting the water molecular adsorption at the Zn electrode interface was constrained, thus suppressing the related water‐induced side‐reactions and providing a fast desolvation process.…”

Section: Resultsmentioning

confidence: 99%

A Nature‐Inspired Separator with Water‐Confined and Kinetics‐Boosted Effects for Sustainable and High‐Utilization Zn Metal Batteries

Qin

Chen

Kuang

et al. 2023

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Uncontrollable dendrite growth and sluggish ion‐transport kinetics are considered as the main obstacles for the further development of high‐performance aqueous zinc ion batteries (AZIBs). Here, a nature‐inspired separator (ZnHAP/BC) is developed to tackle these issues via the hybridization of the biomass‐derived bacterial cellulose (BC) network and nano‐hydroxyapatite particles (HAP). The as‐prepared ZnHAP/BC separator not only regulates the desolvation process of the hydrated Zn2+ ions (Zn(H2O)62+) by suppressing the water reactivity through the surface functional groups, alleviating the water‐induced side‐reactions, but also boosts the ion‐transport kinetics and homogenize the Zn2+ flux, resulting in a fast and uniform Zn deposition. Remarkably, the Zn|Zn symmetric cell with ZnHAP/BC separator harvests a long‐term stability over 1600 h at 1 mA cm−2, 1 mAh cm−2 and endures stable cycling over 1025 and 611 h even at a high depth of discharge (DOD) of 50% and 80%, respectively. The Zn|V2O5 full cell with a low negative/positive (N/P) capacity ratio of 2.7 achieves a superior capacity retention of 82% after 2500 cycles at 10 A g−1. Furthermore, the Zn/HAP separator can be totally degraded within 2 weeks. This work develops a novel nature‐derived separator and provides insights in constructing functional separators toward sustainable and advanced AZIBs.

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Achieving high-rate and high-capacity Zn metal anodesviaa three-in-one carbon protective layer

Abstract: The long-standing dendrite and side reaction issues on Zn anodes largely impede the further development of aqueous zinc-ion batteries (AZIBs). Building artificial interface layers is an effective approach to alleviate...

Cited by 41 publications

References 70 publications

Salt engineering toward stable cation migration of Na metal anodes

Salt engineering toward stable cation migration of Na metal anodes

Building Metal‐Molecule Interface towards Stable and Reversible Zn Metal Anodes for Aqueous Rechargeable Zinc Batteries

A Nature‐Inspired Separator with Water‐Confined and Kinetics‐Boosted Effects for Sustainable and High‐Utilization Zn Metal Batteries

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