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Strong, tough, ionic conductive, and freezing-tolerant all-natural hydrogel enabled by cellulose-bentonite coordination interactions

Author

Listed:
  • Siheng Wang

    (Chinese Academy of Forestry
    Wuhan University
    Nanjing Forestry University)

  • Le Yu

    (Wuhan University)

  • Shanshan Wang

    (Nanjing Forestry University)

  • Lei Zhang

    (Chinese Academy of Forestry)

  • Lu Chen

    (Wuhan University)

  • Xu Xu

    (Nanjing Forestry University)

  • Zhanqian Song

    (Chinese Academy of Forestry)

  • He Liu

    (Chinese Academy of Forestry)

  • Chaoji Chen

    (Wuhan University)

Abstract

Ionic conductive hydrogels prepared from naturally abundant cellulose are ideal candidates for constructing flexible electronics from the perspective of commercialization and environmental sustainability. However, cellulosic hydrogels featuring both high mechanical strength and ionic conductivity remain extremely challenging to achieve because the ionic charge carriers tend to destroy the hydrogen-bonding network among cellulose. Here we propose a supramolecular engineering strategy to boost the mechanical performance and ionic conductivity of cellulosic hydrogels by incorporating bentonite (BT) via the strong cellulose-BT coordination interaction and the ion regulation capability of the nanoconfined cellulose-BT intercalated nanostructure. A strong (compressive strength up to 3.2 MPa), tough (fracture energy up to 0.45 MJ m−3), yet highly ionic conductive and freezing tolerant (high ionic conductivities of 89.9 and 25.8 mS cm−1 at 25 and −20 °C, respectively) all-natural cellulose-BT hydrogel is successfully realized. These findings open up new perspectives for the design of cellulosic hydrogels and beyond.

Suggested Citation

  • Siheng Wang & Le Yu & Shanshan Wang & Lei Zhang & Lu Chen & Xu Xu & Zhanqian Song & He Liu & Chaoji Chen, 2022. "Strong, tough, ionic conductive, and freezing-tolerant all-natural hydrogel enabled by cellulose-bentonite coordination interactions," Nature Communications, Nature, vol. 13(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-30224-8
    DOI: 10.1038/s41467-022-30224-8
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    References listed on IDEAS

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    1. Mutian Hua & Shuwang Wu & Yanfei Ma & Yusen Zhao & Zilin Chen & Imri Frenkel & Joseph Strzalka & Hua Zhou & Xinyuan Zhu & Ximin He, 2021. "Strong tough hydrogels via the synergy of freeze-casting and salting out," Nature, Nature, vol. 590(7847), pages 594-599, February.
    2. Jianwei Song & Chaoji Chen & Shuze Zhu & Mingwei Zhu & Jiaqi Dai & Upamanyu Ray & Yiju Li & Yudi Kuang & Yongfeng Li & Nelson Quispe & Yonggang Yao & Amy Gong & Ulrich H. Leiste & Hugh A. Bruck & J. Y, 2018. "Processing bulk natural wood into a high-performance structural material," Nature, Nature, vol. 554(7691), pages 224-228, February.
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