A self-assembled nanoporous polyelectrolytic interlayer for highly stable zinc metal anodes

Tian, Siyu; Zhang, Long; He, Wei; Tian, Yafen; Zhou, Yue; Wu, Shiwen; Jian, Ruda; Balkus, Kenneth J.; Luo, Tengfei; Xiong, Guoping

doi:10.1016/j.cej.2023.142276

Cited by 7 publications

(3 citation statements)

References 67 publications

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“…This indicated that SG molecules were chemically stable and remained effective during charge/discharge. 34,35 Fig. 5b depicts the rate performance of the full cells at current densities ranging from 0.1 to 5 A g −1 .…”

Section: Resultsmentioning

confidence: 99%

Inducing preferential growth of the Zn (002) plane by using a multifunctional chelator for achieving highly reversible Zn anodes

Li,

Chen,

Ruan

et al. 2024

Nanoscale

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Section: Resultsmentioning

confidence: 99%

Inducing preferential growth of the Zn (002) plane by using a multifunctional chelator for achieving highly reversible Zn anodes

Li,

Chen,

Ruan

et al. 2024

Nanoscale

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“…To date, many strategies have been proposed to address water-induced challenges, including Zn surface modification, [7,8] Zn crystallography modulation, [9,10] separator functionalization, [11,12] and electrolyte engineering. [13,14] Compared with other strategies, electrolyte engineering has emerged as a promising approach to advance the large-scale implementation of AZIBs.…”

Section: Introductionmentioning

confidence: 99%

A Low‐Cost Quasi‐Solid‐State “Water‐in‐Swelling‐Clay” Electrolyte Enabling Ultrastable Aqueous Zinc‐Ion Batteries

Tian

Hwang

Estalaki

et al. 2023

Advanced Energy Materials

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The poor reversibility of Zn metal anodes arising from water‐induced parasitic reactions poses a significant challenge to the practical applications of aqueous zinc‐ion batteries (AZIBs). Herein, a novel quasi‐solid‐state “water‐in‐swelling‐clay” electrolyte (WiSCE) containing zinc sulfate and swelling clay, bentonite (BT), is designed to enable highly reversible Zn metal anodes. AZIB full cells based on the WiSCE exhibit excellent cyclic stability at various current densities, long shelf life, low self‐discharge rate, and outstanding high‐temperature adaptability. Particularly, the capacity of WiSCE‐based AZIB full cells retains 90.47% after 200 cycles at 0.1 A g−1, 96.64% after 2000 cycles at 1 A g−1, and 88.29% after 5000 cycles at 3 A g−1. Detailed density functional theory calculations show that strong hydrogen bonds are formed between BT and water molecules in the WiSCE. Thus, water molecules are strongly confined by BT, particularly within the interlayers, which significantly inhibits water‐induced parasitic reactions and greatly improves cyclic stability. Compared to the state‐of‐the‐art “water‐in‐salt” electrolytes, the WiSCE can provide a significantly higher capacity at the full‐cell level with a substantially reduced cost, which is promising for the design of next‐generation high‐performance AZIBs. This work provides a new direction for developing cost‐competitive AZIBs as alternatives to grid‐scale energy storage.

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“…To date, extensive efforts have been made to regulate water activity and suppress water-induced side reactions at the Zn/electrolyte interface. Effective strategies that can enhance the cyclic stability of AZIBs include anode modification, − separator functionalization, and electrolyte engineering. , From the perspective of water molecules, they exist in the bulk electrolyte phase or at the electrode/electrolyte interfaces. Moreover, regulating the water activity in aqueous electrolytes through additives has shown great potential to enhance the cyclic stability of AZIBs. , As summarized in Table S1, electrolyte additives, including organic molecules, − inorganic salts, − metal oxide particles, − and carbon materials, have been added to the baseline electrolytes (e.g., 1–3 M ZnSO 4 ).…”

Section: Introductionmentioning

confidence: 99%

Suppressing Dendrite Growth and Side Reactions via Mechanically Robust Laponite-Based Electrolyte Membranes for Ultrastable Aqueous Zinc-Ion Batteries

et al. 2023

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The development of aqueous zinc-ion batteries (AZIBs) faces significant challenges because of waterinduced side reactions arising from the high water activity in aqueous electrolytes. Herein, a quasi-solid-state electrolyte membrane with low water activity is designed based on a laponite (LP) nanoclay for separator-free AZIBs. The mechanically robust LP-based membrane can perform simultaneously as a separator and a quasi-solidstate electrolyte to inhibit dendrite growth and water-induced side reactions at the Zn/electrolyte interface. A combination of density functional theory calculations, theoretical analyses, and experiments ascertains that the water activities associated with self-dissociation, byproduct formation, and electrochemical decomposition could be substantially suppressed when the water molecules are absorbed by LP. This could be attributed to the high water adsorption and hydration capabilities of LP nanocrystals, resulting from the strong Coulombic and hydrogenbinding interactions between water and LP. Most importantly, the separator-free AZIBs exhibit high capacity retention rates of 94.10% after 2,000 cycles at 1 A/g and 86.32% after 10,000 cycles at 3 A/g, along with enhanced durability and record-low voltage decay rates over a 60-day storage period. This work provides a fundamental understanding of water activity and demonstrates that LP nanoclay is promising for ultrastable separator-free AZIBs for practical energy storage applications.

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A self-assembled nanoporous polyelectrolytic interlayer for highly stable zinc metal anodes

Cited by 7 publications

References 67 publications

Inducing preferential growth of the Zn (002) plane by using a multifunctional chelator for achieving highly reversible Zn anodes

Inducing preferential growth of the Zn (002) plane by using a multifunctional chelator for achieving highly reversible Zn anodes

A Low‐Cost Quasi‐Solid‐State “Water‐in‐Swelling‐Clay” Electrolyte Enabling Ultrastable Aqueous Zinc‐Ion Batteries

Suppressing Dendrite Growth and Side Reactions via Mechanically Robust Laponite-Based Electrolyte Membranes for Ultrastable Aqueous Zinc-Ion Batteries

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