Localized gelation cellulose separators enable dendrite-free anodes for future zinc-ion batteries

Xi, Chenpeng; Xiao, Yuanbin; Yang, Chengkai; Li, Mengchao; Li, Long; Yu, Chao; Li, Lingyun; He, Chunnian; Yu, Yan

doi:10.1039/d3ta00094j

Cited by 20 publications

(6 citation statements)

References 26 publications

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“…In addition, Stage 3 is the combination of diffusion and surface reaction control process until the cell system reaches a steady state. [32,33,42] For 1 m ZnSO 4 (Stage 1: 0 ~ t m , Stage 2: t m ~ 44 s, Stage 3: 44 s ~ ∞), the I m is the maximal and the t m is 1.645 s which is the shortest one. It indicates that the interface Zn 2+ transfer is the fastest, and the surface coverage is larger so that there is much more lamellar deposition.…”

Section: Electrochemical Performance Of Zn Anode In Gel Electrolytementioning

confidence: 99%

Spontaneous Desaturation of the Solvation Sheath for High‐Performance Anti‐Freezing Zinc‐Ion Gel‐Electrolyte

et al. 2023

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In recent years, gel‐electrolyte becomes pivotal in preventing hydrogen evolution, reducing dendrite growth, and protecting the zinc metal anode for zinc‐ion batteries. Herein, a polyvinyl alcohol‐based water–organic hybrid gel electrolyte with Agar and dimethyl sulfoxide is designed to construct the spontaneous desaturation of the solvation sheath for reducing hydrogen evolution and dendrite growth at room temperature and even low temperature. According to experimental characterization and theoretical calculations, the well binding between multihydroxy polymer and H2O is achieved in the hybrid desaturated gel‐electrolyte to regulate the inner and outer sheath. The ionic conductivity of hybrid gel‐electrolyte reaches 7.4 mS cm−1 even at −20 °C with only 0.5 m zinc trifluoromethanesulfonate (Zn(OTf)2). The Zn symmetric cells cycle over 1200 h under 26 and −20 °C with improved mechanical properties and electrochemical performance. The asymmetric Zn || Cu cell with hybrid gel electrolyte reaches ≈99.02% efficiency after 250 cycles. The capacity of full cell is maintained at around 74 mAh g−1 with almost unchanged retention rate from 50 to 300 cycles at −20 °C. This work provides an effective strategy for desaturated solvation to reach anti‐freezing and high‐density Zn energy storage devices.

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Section: Electrochemical Performance Of Zn Anode In Gel Electrolytementioning

confidence: 99%

Spontaneous Desaturation of the Solvation Sheath for High‐Performance Anti‐Freezing Zinc‐Ion Gel‐Electrolyte

et al. 2023

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“…In recent years, aqueous Zn-based energy storage devices are expected to become a key technology for the next generation of sustainable electrochemical energy storage, due to their availability of materials, low cost, and high safety. − In addition, Zn metal has advantages of having high theoretical specific capacity (820 mAh g –1 and 5855 mAh cm –3 ), being nonhazardous, and being easy to produce and store. − However, Zn-based energy storage is limited by dendrite growth on the surface of Zn anode, hydrogen evolution reaction (HER) and surface corrosion, resulting in a poor reversibility, which is more serious at higher current densities. − More importantly, due to the slow reaction kinetics under the conditions of zero temperature, the Zn-based energy storage cannot play a role in normal electrochemical performance, which limits its practical application. − …”

Section: Introductionmentioning

confidence: 99%

Promoting Desolvation by Hydrophobic and Zincophilic Adsorption Layer To Achieve Stable Zn Anodes at Low Temperature

Li,

Quan

et al. 2024

ACS Sustainable Chem. Eng.

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Aqueous Zn-based energy storage devices have broad prospects in the direction of large-scale energy storage, but the Zn anode still has problems, such as poor reversibility and unsatisfactory performance at low temperature. Due to the influence of thermodynamics at low temperature, the dissolution of the Zn ion becomes more difficult, which will intensify the growth of Zn dendrites. In this study, amphiphilic-ion Betaine (Bet) was introduced into 2 M ZnSO 4 aqueous electrolyte as an antifreeze to improve the stability of Zn anode at different temperatures. It is found that Bet can not only participate in the solvation structure of the Zn ion but also be adsorbed on the Zn anode surface directionally, ensuring good reaction kinetics at low temperature, which can inhibit the growth of Zn dendrites and improve its electrochemical performance at low temperature. The results show that, due to the introduction of Bet, Zn//Zn symmetric cells can cycle stably for more than 2000 h under 25 °C, and they can also cycle stably for more than 1000 h under an extreme condition of −20 °C. This work provides a reasonable method for the design of low-temperature and high-rate Zn-based energy storage devices.

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“…However, the limitation of Mn 3+ to Mn 2+ conversion leads to dissolution behavior in AZIBs, causing rapid capacity degradation and poor cyclic stability of Mn. 25 Thus, the Zn//V 2 O 5 battery with a stable layered structure and diverse morphology is well-suited for hydrogel electrolytes and displays a high specific capacity, higher rate performance, and a longer cycle life along with high theoretical capacity, which is an additional advantage for aqueous ZIBs. 26 Herein, we propose to develop a newer inorganic nanofiller, 2D-Ti-MXene-incorporated polyacrylamide-based hybrid hydrogel electrolyte, for aqueous ZIBs by a free radical polymerization technique.…”

Section: Introductionmentioning

confidence: 99%

“…Among them, Zn // MnO 2 and Zn // V 2 O 5 are commonly used cathode materials for hydrogel electrolytes because of their high safety, low cost, and large abundance. However, the limitation of Mn 3+ to Mn 2+ conversion leads to dissolution behavior in AZIBs, causing rapid capacity degradation and poor cyclic stability of Mn . Thus, the Zn // V 2 O 5 battery with a stable layered structure and diverse morphology is well-suited for hydrogel electrolytes and displays a high specific capacity, higher rate performance, and a longer cycle life along with high theoretical capacity, which is an additional advantage for aqueous ZIBs …”

Section: Introductionmentioning

confidence: 99%

3D-Polyacrylamide/Ti-MXene: A Newer Hybrid Hydrogel Electrolyte Featuring High Mechanical Strength and Durability for Flexible Aqueous Zinc-Ion Batteries

Radjendirane,

M Sha,

Balan

et al. 2024

ACS Appl. Energy Mater.

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The utilization of hydrogel (HG) electrolytes for aqueous zinc-ion batteries is a new emerging technology for flexible and wearable electronics owing to their eco-friendliness, low cost, high safety, and ease of operation. In comparison with solid electrolytes, the hydrogel electrolyte (HGE) carries an annexation of the individualities of both solid and liquid electrolytes in terms of mechanical strength and ionic conductivity. However, it is still a technical hitch to achieve hydrogel electrolytes that comply with all of the necessities for developing a high-performance zinc-ion battery. Herein, a newer type of polymer-inorganic-based hybrid hydrogel electrolyte (HHGE) of polyacrylamide (PAM)/Ti-MXene is developed for aqueous zinc-ion batteries to address the aforementioned concerns. Among different wt % values of Ti-MXene-incorporated PAM, PAM/Ti-MXene (0.1 wt %) HHGE shows a higher ionic conductivity of 25.27 mS cm–1 with an electrochemical stability window (ESW) of ∼2.7 V. Additionally, the as-fabricated Zn//V2O5–CNT battery shows a higher initial capacity of 192 mAh g–1 at 0.05 Ag–1 with a Coulombic efficiency of 100%.

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Localized gelation cellulose separators enable dendrite-free anodes for future zinc-ion batteries

Abstract: The safety, adaptability, and eco-friendliness of zinc-ion batteries draw increased attention. However, it is suffered from the irregular interfacial kinetics and the uncontrolled Zn2+ deposition. Herein, a novel localized gelation...

Cited by 20 publications

References 26 publications

Spontaneous Desaturation of the Solvation Sheath for High‐Performance Anti‐Freezing Zinc‐Ion Gel‐Electrolyte

Spontaneous Desaturation of the Solvation Sheath for High‐Performance Anti‐Freezing Zinc‐Ion Gel‐Electrolyte

Promoting Desolvation by Hydrophobic and Zincophilic Adsorption Layer To Achieve Stable Zn Anodes at Low Temperature

3D-Polyacrylamide/Ti-MXene: A Newer Hybrid Hydrogel Electrolyte Featuring High Mechanical Strength and Durability for Flexible Aqueous Zinc-Ion Batteries

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