Phytic acid cross-linked and Hofmeister effect strengthened polyvinyl alcohol hydrogels for zinc ion storage

Liu, Xinlong; Cao, Yulin; Wang, Haiou; Hu, Yingqi; Wang, Zhan; Li, Yingzhi; Yang, Weimin; Cheng, Hua; Lu, Zhouguang

doi:10.1039/d3cc05008d

Chem. Commun.

2024

DOI: 10.1039/d3cc05008d

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Phytic acid cross-linked and Hofmeister effect strengthened polyvinyl alcohol hydrogels for zinc ion storage

Xinlong Liu,

Yulin Cao,

Haiou Wang

et al.

Abstract: The mechanical strength of polyvinyl alcohol (PVA) hydrogel can be drastically boosted by Hofmeister effects and rich hydrogen bonds. The phosphate groups from phytic acid (PA) are beneficial to fast ions transport.

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Cited by 4 publications

References 26 publications

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A Synergistic Zincophilic and Hydrophobic Supramolecule Shielding Layer for Actualizing Long‐Term Zinc‐Ion Batteries

Tao,

Cai,

et al. 2024

Advanced Energy Materials

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The zinc metal anodes are liable to experience detrimental dendrite growth and side reactions, thereby limiting the lifespan of aqueous Zn‐ion batteries. Here, a readily available supramolecule, dimethoxypillar[5]arene (DP[5]), is utilized as a shielding layer to stabilize the Zn anode by exploiting its zincophilicity derived from the ─OCH3 functional groups and its hydrophobicity from the hydrophobic backbone. The DP[5] shielding layer regulates the solvation sheath of Zn2+ and facilitates uniform zinc deposition. Swelling and dendrite formation are obviously suppressed in both the symmetric and full cells. The DP[5]‐Zn symmetrical cell cycles stably for 5500 h, and achieves a coulombic efficiency of 99.76% in a DP[5]‐Zn||Cu half‐cell after 2200 cycles. The DP[5]‐Zn||V2O5 full cell maintains 92.03% of initial capacity after 6000 cycles. Given the cost‐effective fabrication and environmental friendliness of DP[5] films, this material may pave the way for practical applications of zinc anodes.

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A Synergistic Zincophilic and Hydrophobic Supramolecule Shielding Layer for Actualizing Long‐Term Zinc‐Ion Batteries

Tao,

Cai,

et al. 2024

Advanced Energy Materials

View full text Add to dashboard Cite

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Ion‐sieving MXene flakes with quantum dots enable high plating capacity for dendrite‐free Zn anodes

Liu,

Xu,

Deng

et al. 2024

Carbon Energy

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The commercial utilization of Zn metal anodes with high plating capacity is significantly hindered by the uncontrolled growth of dendrites and associated side reactions. Herein, a robust artificial ion‐sieving MXene flake (MXF)‐coating layer, with abundant polar terminated groups, is constructed to regulate the interfacial Zn2+ deposition behavior. In particular, the fragmented MXF coupled with in situ generated quantum dots not only has strong Zn affinity to homogenize electric fields but also generates numerous zincophilic sites to reduce nucleation energy, thus securing a uniform dendrite‐free surface. Additionally, the porous coating layer with polar groups allows the downward diffusion of Zn2+ to achieve bottom‐up deposition and repels the excessive free water and anions to prevent parasitic reactions. The ion‐sieving effect of MXF is firmly verified in symmetric cells with high areal capacity of 10–40 mAh cm−2 (1.0 mA cm−2) and depth of discharge of 15%–60%. Therefore, the functional MXF‐coated anode manifests long‐term cycling with 2700 h of stable plating/stripping in Zn||Zn cell. Such rational design of MXF protective layer breaks new ground in developing high plating capacity zinc anodes for practical applications.

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From Fundamentals to Practice: Electrolyte Strategies for Zinc‐Ion Batteries in Extreme Temperature

Xue,

Mu,

Wei

et al. 2024

Carbon Neutralization

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In the pursuit of advanced energy storage technologies that promote sustainable energy solutions, zinc‐ion batteries (ZIBs) have emerged as a promising alternative to lithium‐ion batteries due to their abundance, safety, and environmental advantages. However, the failure mechanisms of ZIBs under extreme temperatures are still not fully understood, presenting significant challenges to their development and commercialization. Therefore, innovative strategies are essential to enhance their adaptability to temperature extremes. In this review, we first explore the thermodynamic and kinetic aspects of performance degradation under extreme temperatures, focusing on key factors such as ion diffusion and redox processes at electrode interfaces. We then comprehensively summarize and discuss the existing approaches for various electrolyte types, including aqueous, nonaqueous, and solid state. Finally, we highlight the key challenges and future prospects for ZIBs operating under extreme temperature conditions. The insights presented in this review are expected to accelerate the advancement of ZIBs and facilitate their practical implementation in large‐scale energy storage systems.

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Phytic acid cross-linked and Hofmeister effect strengthened polyvinyl alcohol hydrogels for zinc ion storage

Abstract: The mechanical strength of polyvinyl alcohol (PVA) hydrogel can be drastically boosted by Hofmeister effects and rich hydrogen bonds. The phosphate groups from phytic acid (PA) are beneficial to fast ions transport.

Cited by 4 publications

References 26 publications

A Synergistic Zincophilic and Hydrophobic Supramolecule Shielding Layer for Actualizing Long‐Term Zinc‐Ion Batteries

A Synergistic Zincophilic and Hydrophobic Supramolecule Shielding Layer for Actualizing Long‐Term Zinc‐Ion Batteries

Ion‐sieving MXene flakes with quantum dots enable high plating capacity for dendrite‐free Zn anodes

From Fundamentals to Practice: Electrolyte Strategies for Zinc‐Ion Batteries in Extreme Temperature

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