Swelling-resistant microgel-reinforced hydrogel polymer electrolytes for flexible all-in-one supercapacitors with high performances

Jia, Yingmin; Guo, Mingxin; Feng, Li; Hao, Jiajia; Guo, Y. Q.; Li, Zhipeng; Liu, Shuzheng; Qin, G.; Sun, Gengzhi; Chen, Qiang

doi:10.1039/d3tc00160a

Cited by 8 publications

(1 citation statement)

References 47 publications

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“…Flexible conductive materials can convert external stimuli, such as stress, strain, temperature, and humidity, into electrical signals (such as current, resistance, and capacitance) [1][2][3]. Due to their unique stimuli-responsive characteristics, flexible conductive materials are commonly used in research fields such as human motion monitoring [4], human health monitoring [5], remote medical control [6], artificial skin [7], and soft robotics [8].…”

Section: Introductionmentioning

confidence: 99%

Recent Progress of Anti-Freezing, Anti-Drying, and Anti-Swelling Conductive Hydrogels and Their Applications

Li,

Cheng,

Deng

et al. 2024

Polymers

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Hydrogels are soft–wet materials with a hydrophilic three-dimensional network structure offering controllable stretchability, conductivity, and biocompatibility. However, traditional conductive hydrogels only operate in mild environments and exhibit poor environmental tolerance due to their high water content and hydrophilic network, which result in undesirable swelling, susceptibility to freezing at sub-zero temperatures, and structural dehydration through evaporation. The application range of conductive hydrogels is significantly restricted by these limitations. Therefore, developing environmentally tolerant conductive hydrogels (ETCHs) is crucial to increasing the application scope of these materials. In this review, we summarize recent strategies for designing multifunctional conductive hydrogels that possess anti-freezing, anti-drying, and anti-swelling properties. Furthermore, we briefly introduce some of the applications of ETCHs, including wearable sensors, bioelectrodes, soft robots, and wound dressings. The current development status of different types of ETCHs and their limitations are analyzed to further discuss future research directions and development prospects.

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Section: Introductionmentioning

confidence: 99%

Recent Progress of Anti-Freezing, Anti-Drying, and Anti-Swelling Conductive Hydrogels and Their Applications

Li,

Cheng,

Deng

et al. 2024

Polymers

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An Ultrastretchable and Highly Conductive Hydrogel Electrolyte for All‐in‐One Flexible Supercapacitor With Extreme Tensile Resistance

Li,

Wei,

Jiang

et al. 2024

Energy & Environ Materials

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Stretchability is a crucial property of flexible all‐in‐one supercapacitors. This work reports a novel hydrogel electrolyte, polyacrylamide‐divinylbenzene‐Li2SO4 (PAM‐DVB‐Li) synthesized by using a strategy of combining hydrophobic nodes and hydrophilic networks as well as a method of dispersing hydrophobic DVB crosslinker to acrylamide monomer/Li2SO4 aqueous solution by micelles and followed γ‐radiation induced polymerization and crosslinking. The resultant PAM‐DVB‐Li hydrogel electrolyte possesses excellent mechanical properties with 5627 ± 241% stretchability and high ionic conductivity of 53 ± 3 mS cm−1. By in situ polymerization of conducting polyaniline (PANI) on the PAM‐DVB‐Li hydrogel electrolyte, a novel all‐in‐one supercapacitor, PAM‐DVB‐Li/PANI, with highly integrated structure is prepared further. Benefiting from the excellent properties of hydrogel electrolyte and the all‐in‐one structure, the device exhibits a high specific capacitance of 469 mF cm−2 at 0.5 mA cm−2, good cyclic stability, safety, and deformation damage resistance. More importantly, the device demonstrates a superior tensile resistance (working normally under no more than 300% strain, capacitance stability in 1000 cycles of 1000% stretching and 10 cycles of 3000% stretching) far beyond that of other all‐in‐one supercapacitors. This work proposes a novel strategy to construct tensile‐resistant all‐in‐one flexible supercapacitors that can be used as an energy storage device for stretchable electronic devices.

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An overview of conductive composite hydrogels for flexible electronic devices

Chen,

Liu,

Abdiryim

et al. 2024

Adv Compos Hybrid Mater

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Swelling-resistant microgel-reinforced hydrogel polymer electrolytes for flexible all-in-one supercapacitors with high performances

Abstract: In the past few years, in-situ polymerization of polyaniline (PANI) on hydrogel polymer electrolyte (HPE) has been usually applied to fabricate flexible all-in-one supercapacitors, but many HPEs suffer from severe...

Cited by 8 publications

References 47 publications

Recent Progress of Anti-Freezing, Anti-Drying, and Anti-Swelling Conductive Hydrogels and Their Applications

Recent Progress of Anti-Freezing, Anti-Drying, and Anti-Swelling Conductive Hydrogels and Their Applications

An Ultrastretchable and Highly Conductive Hydrogel Electrolyte for All‐in‐One Flexible Supercapacitor With Extreme Tensile Resistance

An overview of conductive composite hydrogels for flexible electronic devices

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