Organo‐Hydrogel Electrolytes with Versatile Environmental Adaptation for Advanced Flexible Aqueous Energy Storage Devices

Wang, Hongfei; Riaz, Muhammad Sohail; Ali, Tariq; Gu, Jianjun; Zhong, Yijun; Hu, Yong

doi:10.1002/smsc.202200104

Cited by 18 publications

(8 citation statements)

References 130 publications

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“…[ 50 ] Finally, the matching between electrolytes and electrodes is worth considering, which is critical for constructing flexible devices. [ 51 ]…”

Section: Fundamentals Of Zn─i2 Batteriesmentioning

confidence: 99%

Aqueous Zinc‐Iodine Batteries: From Electrochemistry to Energy Storage Mechanism

Chen,

Li,

Fang

et al. 2023

Advanced Energy Materials

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As one of the most appealing energy storage technologies, aqueous zinc‐iodine batteries still suffer severe problems such as low energy density, slow iodine conversion kinetics, and polyiodide shuttle. This review summarizes the recent development of Zn─I2 batteries with a focus on the electrochemistry of iodine conversion and the underlying working mechanism. Starting from the fundamentals of Zn─I2 batteries, the electrochemistry of iodine conversion and zinc anode, as well as the scientific problems existing in Zn─I2 batteries are introduced. The concrete strategies dealing with cathode, anode, electrolyte, and separator challenges confronting Zn─I2 batteries are elaborated as well. To deepen the understanding of the electrochemistry of Zn─I2 batteries, the recent important findings of the underlying working mechanism of different Zn─I2 batteries are summarized in detail. Finally, some guidelines and directions for Zn─I2 batteries are also provided. This review is expected to deepen the understanding of Zn─I2 battery electrochemistry and promote their practical applications in the future.

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“…[ 50 ] Finally, the matching between electrolytes and electrodes is worth considering, which is critical for constructing flexible devices. [ 51 ]…”

Section: Fundamentals Of Zn─i2 Batteriesmentioning

confidence: 99%

Aqueous Zinc‐Iodine Batteries: From Electrochemistry to Energy Storage Mechanism

Chen,

Li,

Fang

et al. 2023

Advanced Energy Materials

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“…The electroconductivity of PVA 15 /CD/HAG and PVA 15 /CD/HAG/ CD AgNP was quantified by EIS. [99] A hydrogel block (10 × 10 × 3 mm) was sandwiched between two symmetric Pt sheet electrodes connected to a CHI600E electrochemical workstation (CH Instruments, Austin, TX, USA). EIS was performed within a frequency range of 1 to 1 × 10 5 Hz at room temperature and relative humidity of 50%.…”

Section: Adhesivenessmentioning

confidence: 99%

An Electroconductive and Antibacterial Adhesive Nanocomposite Hydrogel for High‐Performance Skin Wound Healing

Zheng,

Yang,

Wei

et al. 2023

Adv Healthcare Materials

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Multifunctional hydrogel adhesives inhibiting infections and enabling the electrical stimulation (ES) of tissue reparation are highly desirable for the healing of surgical wounds and other skin injuries. Herein, a therapeutic nanocomposite hydrogel is designed by integrating β‐cyclodextrin‐embedded Ag nanoparticles (CDAgNPs) in a polyvinyl alcohol (PVA) matrix enhanced with free β‐cyclodextrin (CD) and an atypical macromolecule made of β‐glucan grafted with hyaluronic acid (HAG). The main objective is to develop a biocompatible dressing combining the electroconductivity and antibacterial activity of CDAgNPs with the cohesiveness and porosity of PVA and the anti‐inflammatory, moisturizing, and cell proliferation‐promoting properties of HAG. The last component, CD, is added to strengthen the network structure of the hydrogel. PVA/CD/HAG/CDAgNP exhibited excellent adhesion strength, biocompatibility, electroconductivity, and antimicrobial activity against a wide range of bacteria. In addition, the nanocomposite hydrogel has a swelling ratio and water retention capacity suitable to serve as a wound dressing. PVA/CD/HAG/CDAgNP promoted the proliferation of fibroblast in vitro, accelerated the healing of skin wounds in an animal model, and is hemostatic. Upon ES, the PVA/CD/HAG/CDAgNP nanocomposite hydrogel became more efficient both in vitro and in vivo further speeding up the skin healing process thus demonstrating its potential as a next‐generation electroconductive wound dressing.

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“…However, since the organic/water mixed solvent systems with different polar components will significantly affect the polymerization process, specific synthetic conditions are required to be optimized carefully to reconcile the polymerization behavior of different monomers. [12] Hence, a solvent replacement method based on the osmotic pressure was proposed by displacing water molecules in the pre-prepared hydrogels with cryoprotectants. [13] Benefiting from the binary solvent system, the COHs obtained by solvent replacement exhibit outstanding anti-freezing capability.…”

Section: Introductionmentioning

confidence: 99%

A Freeze‐Resistant, Highly Stretchable and Biocompatible Organohydrogel for Non‐Delayed Wearable Sensing at Ultralow‐Temperatures

Huang,

Zheng,

Wang

et al. 2024

Adv Funct Materials

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Wearable electronics based on conductive hydrogels (CHs) easily suffer from prolonged response times, reduced wearing comfort, shortened service lives, and impaired signal accuracy in cold environments, because conventional CHs tend to freeze at subzero temperatures and lose their flexibility, adhesion, transparency, and conductivity, which will limit their applications in extreme environments. Inspired by the way psychrotolerant creatures and superabsorbent materials interfere with the hydrogen bonding networks of water, a freeze‐resistant conductive organohydrogel (COH) is facilely fabricated. The synergy effect between charged polar terminal groups and a binary solvent system of water–ethylene glycol weakens the hydrogen bonding between water molecules and endows the COH with remarkable freezing tolerance (−78 °C). Additionally, the obtained COH is ultra‐stretchable (≈6185%), tough (9.2 MJ m−3), highly transparent (≈99%), self‐adhesive (10.2–27.8 kPa), and biocompatible. This versatile COH is assembled into a strain sensor and a well‐designed bracelet electrocardiogram sensor. Benefiting from the exceptional low‐temperature tolerance of the prepared COH, these devices exhibit fast response with delay‐free signals even at −40 °C. Overall, this work proposes a strategy to develop multifunctional COHs for supporting human health in cold environments.

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Organo‐Hydrogel Electrolytes with Versatile Environmental Adaptation for Advanced Flexible Aqueous Energy Storage Devices

Cited by 18 publications

References 130 publications

Aqueous Zinc‐Iodine Batteries: From Electrochemistry to Energy Storage Mechanism

Aqueous Zinc‐Iodine Batteries: From Electrochemistry to Energy Storage Mechanism

An Electroconductive and Antibacterial Adhesive Nanocomposite Hydrogel for High‐Performance Skin Wound Healing

A Freeze‐Resistant, Highly Stretchable and Biocompatible Organohydrogel for Non‐Delayed Wearable Sensing at Ultralow‐Temperatures

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