Double-cross-linked polyaniline hydrogel and its application in supercapacitors

Zhao, Jiahui; Cao, Lin; Lai, Fenglin; Wang, Xiao; Huang, Suyuan; Du, Xusheng; Li, Wei; Lin, Zhidan; Zhang, Peng

doi:10.1007/s11581-021-04251-2

Cited by 7 publications

(3 citation statements)

References 54 publications

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“…The electrochemical characteristics of our PANI/PT3Fe electrode as well as the device compare well with previously reported SCs devices based on PANI composites (Table 2). [53–58] This reflects the good electrochemical stability of our samples and the good compatibility between the gel electrolyte and PANI electrode in the device.…”

Section: Resultsmentioning

confidence: 78%

Mussel‐Inspired Conductive Hydrogel with Enhanced Adhesion and Toughness in All‐Hydrogel Supercapacitors

Chen,

Wang,

Wang

et al. 2023

ChemistrySelect

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Hydrogels that combine electrical conductivity, mechanical and self‐adhesion properties have attracted considerable interest because of their promising applications in wearable devices and flexible supercapacitors, among others. However, the weak interfacial adhesion between adjacent layers of flexible supercapacitors limits their practical applications. In this work, mussel‐inspired nanocomposite hydrogels composed of tannic acid (TA)‐modified doped polyaniline (PANI) and functional monomer acrylamide (AAm) were prepared, the hydrogel exhibited good mechanical properties (903 % strain at break) and adhesion properties. In a three‐electrode system the hydrogel exhibited a specific capacitance of 851.1 mF cm−2 (at 1 mA cm−2) and good stability. All‐hydrogel supercapacitors with robust interfacial capabilities were assembled on this basis without additional immobilization. The flexible supercapacitors show favorable electrochemical performance (570 mF cm−3 at 1 mA cm−2) and provide a volume energy density 55.9 μWh cm−3 and a capacitance retention of 85.6 % after 2000 cycles. Compared with previous conductive hydrogels, this work will provide a new approach to fabricate nanocomposite hydrogels with self‐adhesive, robust mechanical properties and conductive performance, effectively improving the interfacial adhesion of integrated supercapacitors and expanding the application scope of flexible supercapacitors.

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Section: Resultsmentioning

confidence: 78%

Mussel‐Inspired Conductive Hydrogel with Enhanced Adhesion and Toughness in All‐Hydrogel Supercapacitors

Chen,

Wang,

Wang

et al. 2023

ChemistrySelect

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“…The values of Cp reported in the literature for supercapacitors based on hydrogel and PANI ,, (Table S2) are orders of magnitude higher than that of our device. This is because the current stage of development of the fabrication technique allows only the preparation of asymmetric devices.…”

Section: Resultsmentioning

confidence: 99%

Preparation and Characterization of Self-Healing PVA–H₂SO₄ Hydrogel for Flexible Energy Storage

D’Altri,

Yeasmin,

Di Matteo

et al. 2024

ACS Omega

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In the past decade, hydrogels have attracted growing interest for emerging applications in flexible electronic devices, human−machine interactions, energy supply, or energy storage. Developing a multifunctional gel architecture with superior ionic conductivity and good mechanical flexibility is a bottleneck to overcome. Herein, poly(vinyl alcohol)/ sulfuric acid (PVA−H 2 SO 4 ) hydrogels were prepared via a freeze−thaw method. With the aim of tuning the formulation in view of a possible application in energy storage, the effects of different combinations in terms of the molecular weight (MW) of PVA and PVA−H 2 SO 4 weight ratio were investigated. Moreover, exploiting the self-healing properties of these hydrogels and the easy possibility of functionalizing them, i.e., introducing a conducting polymer such as poly(2-acrylamido-2-methyl-1-propane) sulfonic acid doped polyaniline (PANI_PAMPSA), a sandwiched all-in-one double-layer hydrogel (electrode/electrolyte configuration) was prepared (PVA−H 2 SO 4 −PANI_PAMPSA/PVA−H 2 SO 4 ). Results showed that the water content is independent of the PVA amount and MW; the polymer concentration has a significant effect on the formation of crystalline domains and therefore on swelling degree, whereas the cross-linking degree depends on the MW. The PVA MW has the maximum effect on the swelling percentage normalized with respect to the polymer fraction and the tensile properties of the hydrogel. The assembled all-in-one electrode/ electrolyte shows promising ionic conductivity (439.7 mS cm −1 ) and specific capacitance performance (0.297 mF cm −2 at a current density of 0.025 mA cm −2 ), as well as excellent flexibility and considerable self-healing properties. These results will promote the development of self-healing symmetrical supercapacitors for storage devices in wearable electronics.

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“…Typically, PAni are combined with other polymers to obtain better electrochemical properties. For instance, PAni has been combined with polyvinyl alcohol (PVA) [88] and has obtained a 237 mF/cm 2 at current density of 0.5 mA/cm 2 with excellent charge-discharge cycles. However, there is a difficulty in making a good combination of PVA and PAni; the authors employed a special crosslinking agent to obtain good results.…”

Section: Polyaniline (Pani) Hydrogelmentioning

confidence: 99%

Review on Hydrogel-Based Flexible Supercapacitors for Wearable Applications

Tadesse

Lübben

2023

Gels

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Smart hydrogels with high electrical conductivity, which can be a real source of power while also collecting and storing the diverse sources of energy with ultrahigh stretchability, strong self-healability, low-temperature tolerance, and excellent mechanical properties, are great value for tailored wearable cloths. Considerable effort has been dedicated in both scientific and technological developments of electroconductive hydrogels for supercapacitor applications in the past few decades. The key to realize those functionalities depends on the processing of hydrogels with desirable electrochemical properties. The various hydrogel materials with such properties are now emerging and investigated by various scholars. The last decade has witnessed the development of high-performance supercapacitors using hydrogels. Here, in this review, the current status of different hydrogels for the production of flexible supercapacitors has been discussed. The electrochemical properties such as capacitance, energy density and cycling ability has been given attention. Diverse hydrogels, with their composites such as carbon-based hydrogels, cellulose-based hydrogels, conductive-polymer-based hydrogels and other hydrogels with excellent electromechanical properties are summarized. One could argue that hydrogels have played a central, starring role for the assembly of flexible supercapacitors for energy storage applications. This work stresses the importance of producing flexible supercapacitors for wearable clothing applications and the current challenges of hydrogel-based supercapacitors. The results of the review depicted that hydrogels are the next materials for the production of the flexible supercapacitor in a more sustainable way.

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Double-cross-linked polyaniline hydrogel and its application in supercapacitors

Cited by 7 publications

References 54 publications

Mussel‐Inspired Conductive Hydrogel with Enhanced Adhesion and Toughness in All‐Hydrogel Supercapacitors

Mussel‐Inspired Conductive Hydrogel with Enhanced Adhesion and Toughness in All‐Hydrogel Supercapacitors

Preparation and Characterization of Self-Healing PVA–H₂SO₄ Hydrogel for Flexible Energy Storage

Review on Hydrogel-Based Flexible Supercapacitors for Wearable Applications

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Double-cross-linked polyaniline hydrogel and its application in supercapacitors

Cited by 7 publications

References 54 publications

Mussel‐Inspired Conductive Hydrogel with Enhanced Adhesion and Toughness in All‐Hydrogel Supercapacitors

Mussel‐Inspired Conductive Hydrogel with Enhanced Adhesion and Toughness in All‐Hydrogel Supercapacitors

Preparation and Characterization of Self-Healing PVA–H2SO4 Hydrogel for Flexible Energy Storage

Review on Hydrogel-Based Flexible Supercapacitors for Wearable Applications

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Preparation and Characterization of Self-Healing PVA–H₂SO₄ Hydrogel for Flexible Energy Storage