A deeply rechargeable zinc anode with pomegranate-inspired nanostructure for high-energy aqueous batteries

Chen, Peng; Wu, Yutong; Zhang, Yamin; Wu, Tzu−Ho; Ma, Yao; Pelkowski, Chloe; Yang, Haochen; Zhang, Yi; Hu, Xianwei; Liu, Nian

doi:10.1039/c8ta07809b

Cited by 66 publications

(35 citation statements)

References 53 publications

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“…To date, there have been varying strategies to mitigate dendrites, namely the use of additives, − anode coatings, and the use of porous anodes. − Additives have been well known in the field of electrodeposition for several decades and generally yield smooth continuous films. However, additives generally need to be replenished with time owing to break down during polarization and/or incorporation into metal .…”

Section: Introductionmentioning

confidence: 99%

Electrodeposited Zinc-Based Films as Anodes for Aqueous Zinc Batteries

Fayette

Chang

Rodríguez‐Pérez

et al. 2020

ACS Appl. Mater. Interfaces

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Zinc-based batteries have attracted extensive attention in recent years, due to high safety, high capacities, environmental friendliness, and low cost compared to lithiumion batteries. However, the zinc anode suffers primarily from dendrite formation as a mode of failure in the mildly acidic system. Herein, we report on electrochemically deposited zinc (ED Zn) and copper−zinc (brass) alloy anodes, which are critically compared with a standard commercial zinc foil. The film electrodes are of commercially relevant thicknesses (21 and 25 μM). The electrodeposited zinc-based anodes exhibit low electrode polarization (∼0.025 V) and stable cycling performance in 50 cycle consecutive experiments from 0.26 to 10 mA cm −2 compared to commercial Zn foil. Coulombic efficiencies at 1 mA cm −2 were over 98% for the electrodeposited zinc-based materials and were maintained for over 100 cycles. Furthermore, full cells with an electrodeposited Zn/brass anode, electrolytic manganese dioxide (EMD) cathode, in 1 M ZnSO 4 + 0.1 M MnSO 4 delivered capacities of 96.3 and 163 mAh g −1 , respectively, at 100 mA g −1 compared to 92.1 mAh g −1 for commercial Zn. The electrodeposited zinc-based anodes also show better rate capability, delivering full cell capacities of 35.9 and 47.5 mAh g −1 at a high current of up to 3 A g −1 . Lastly, the electrodeposited zinc-based anodes show enhanced capacity for up to 100 cycles at 100 mA g −1 , making them viable anodes for commercial use.

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Section: Introductionmentioning

confidence: 99%

Electrodeposited Zinc-Based Films as Anodes for Aqueous Zinc Batteries

Fayette

Chang

Rodríguez‐Pérez

et al. 2020

ACS Appl. Mater. Interfaces

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“…On the other hand, the existing exposed crystal plane leads to preferential electrodeposition of zinc dendrites, owing to the tendency of minimizing the surface energy. [2,8,[10][11][12] Therefore, the distribution of electric field and the crystal plane orientation of electroplated Zn 2+ play the important roles during the dendrite formation process.To date, various approaches have been employed to inhibit dendrites formation and protect zinc anode, such as interfacial modification by introducing conductive materials or interfacial layers, [2,[13][14][15][16] electrode modification by increasing surface area of zinc anode, [17,18] electrolyte additive [19][20][21][22] for purpose of coordinating electrolyte environment, homogenizing interfacial electric field, and inducing zinc deposition. [2,[23][24][25][26][27] Recently, special emphasis is given to rational manipulation of crystallographic orientation during electrodeposition of Zn 2+ featured withThe dendrite issues associated with zinc anode lead to safety hazards and sluggish reaction kinetics, and largely restrain widespread application of aqueous zinc ion batteries (ZIBs).…”

mentioning

confidence: 99%

“…To date, various approaches have been employed to inhibit dendrites formation and protect zinc anode, such as interfacial modification by introducing conductive materials or interfacial layers, [2,[13][14][15][16] electrode modification by increasing surface area of zinc anode, [17,18] electrolyte additive [19][20][21][22] for purpose of coordinating electrolyte environment, homogenizing interfacial electric field, and inducing zinc deposition. [2,[23][24][25][26][27] Recently, special emphasis is given to rational manipulation of crystallographic orientation during electrodeposition of Zn 2+ featured with…”

mentioning

confidence: 99%

Manipulating Crystallographic Orientation of Zinc Deposition for Dendrite‐free Zinc Ion Batteries

Cao

Zhang

et al. 2021

Advanced Energy Materials

370

229

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The dendrite issues associated with zinc anode lead to safety hazards and sluggish reaction kinetics, and largely restrain widespread application of aqueous zinc ion batteries (ZIBs). Herein, a functional separator composed of cellulose nanofibers and graphene oxide (CG) is developed for dendrite‐free and exceptionally stable ZIBs, realized by uniform hexagonal zinc deposits with manipulated crystallographic orientation (002) plane. This CG separator with negative surface charges and abundant zincophilic‐O groups ensures the strong interaction between the separator and zinc species, simultaneously inducing Zn(002) deposition due to the low mismatch between (002)Zn and (002)GO, thus initiating the preferential orientation of the zinc growth along the horizontal direction due to strong Zn binding ability, and uniform interfacial charge of Zn(002) deposition. Furthermore, the CG separator can effectively promote the uniform nucleation of Zn2+ and eliminate side effects. Accordingly, extremely low polarization of 58 mV at 0.5 mA cm−2, and ultralong cycle life over 1750 h at 2 mA cm−2 and 400 h at 20 mA cm−2 are achieved for the zinc anode. Notably, the CG separator significantly boosts rate capability and cyclability of coin‐type full batteries (Zn||Zn(CF3SO3)2||V2O5, Zn||ZnSO4+MnSO4||MnO2/graphite) and a flexible soft‐packaged battery (Zn||MnO2). Therefore, this work introduces a sustainability consideration in to the design of separators for constructing dendrite‐free ZIBs.

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“… for clarity). However, it is increasingly recognized now that electrochemical properties obtained in this manner cannot represent the true performance in practical batteries in which a reasonable electrolyte content is required for better volumetric and gravimetric energy densities . Bearing this in mind, a Zn–air cell using ZnCl 2 ·2.33H 2 O electrolyte was constructed with Zn as the anode and Pt/C catalyst as the cathode.…”

mentioning

confidence: 99%

A Room‐Temperature Molten Hydrate Electrolyte for Rechargeable Zinc–Air Batteries

Chen

Matsumoto

Kubota

et al. 2019

Advanced Energy Materials

152

128

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Aqueous Zn‐based batteries are attracting extensive interest because of their economic feasibility and potentially high energy density. However, poor rechargeability of Zn anode in conventional electrolytes resulting from dendrite formation and self‐corrosion hinders their practical implementation. Herein, a Zn molten hydrate composed of inorganic Zn salt and water is demonstrated as an advantageous electrolyte for solving these issues. In this electrolyte, dendrite‐free Zn deposition/dissolution reaction with a high Coulombic efficiency (≈99%) as well as long‐term stability, free from CO2 poisoning are realized. The resultant Zn–air cell exhibits a reversible capacity of 1000 mAh g(catalyst)−1 over 100 cycles at 30 °C. Combined with the intrinsic safety associated with aqueous chemistry and cost benefit of the raw material, the present Zn–air battery makes a strong candidate for large‐scale energy storage.

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A deeply rechargeable zinc anode with pomegranate-inspired nanostructure for high-energy aqueous batteries

Abstract: A deeply rechargeable zinc anode material with nanoscale pomegranate-structured was designed and synthesized for the high energy aqueous batteries.

Cited by 66 publications

References 53 publications

Electrodeposited Zinc-Based Films as Anodes for Aqueous Zinc Batteries

Electrodeposited Zinc-Based Films as Anodes for Aqueous Zinc Batteries

Manipulating Crystallographic Orientation of Zinc Deposition for Dendrite‐free Zinc Ion Batteries

A Room‐Temperature Molten Hydrate Electrolyte for Rechargeable Zinc–Air Batteries

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