Modified supramolecular carboxylated chitosan as hydrogel electrolyte for quasi-solid-state supercapacitors

Yang, Hezhen; Ji, Xiwei; Tan, Yongtao; Liu, Ying; Ran, Fen

doi:10.1016/j.jpowsour.2019.227174

Cited by 53 publications

(23 citation statements)

References 45 publications

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“…The supercapacitor revealed an 89.5% rate capability at a current density of 16 A/g and 93.9% capacitance retention after 5000 charge/discharge cycles [188]. [178]. (b) Synthesis of physically crosslinked cellulose hydrogel electrolytes and zinc ion hybrid supercapacitor assembly [180].…”

Section: Polymer Hydrogel Electrolytes For Supercapacitorsmentioning

confidence: 99%

“…There are many hosts for polymer which have been explored to build up polymer hydrogel electrolytes. For example, chitosan, sodium alginate, agar, cellulose, starch, poly (ethylene oxide) (PEO), poly (acrylic acid) (PAA), poly (acrylamide), poly (ether ether ketone) (PEEK), and poly (vinyl alcohol) (PVA) [ 140 , 178 , 179 , 180 , 181 , 182 , 183 , 184 , 185 , 186 ].…”

Section: Electrochemical Applications Of Polymer Hydrogelsmentioning

confidence: 99%

“…Carboxylated chitosan-g-poly (acrylamide)/lithium sulphate hydrogel electrolytes have been recently prepared via covalent crosslinking by Yang et al The hydrogel electrolytes exhibited higher ionic conductivity (1.74 × 10 −2 S/cm) and enhanced mechanical strength. Sandwiched hydrogel electrolytes between carbon electrodes delivered an energy density of 8.7 W h/kg at a power density of 350.3 W/kg in a wide potential window of 0 to 1.4 V. Figure 18 a reveals the synthesis and supercapacitor assembly containing the prepared hydrogel electrolytes [ 178 ].…”

Section: Electrochemical Applications Of Polymer Hydrogelsmentioning

confidence: 99%

“… ( a ) Synthesis and supercapacitor assembly containing prepared covalently carboxylated chitosan hydrogel electrolytes [ 178 ]. ( b ) Synthesis of physically crosslinked cellulose hydrogel electrolytes and zinc ion hybrid supercapacitor assembly [ 180 ].…”

Section: Figurementioning

confidence: 99%

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Fundamental Concepts of Hydrogels: Synthesis, Properties, and Their Applications

et al. 2020

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In the present review, we focused on the fundamental concepts of hydrogels—classification, the polymers involved, synthesis methods, types of hydrogels, properties, and applications of the hydrogel. Hydrogels can be synthesized from natural polymers, synthetic polymers, polymerizable synthetic monomers, and a combination of natural and synthetic polymers. Synthesis of hydrogels involves physical, chemical, and hybrid bonding. The bonding is formed via different routes, such as solution casting, solution mixing, bulk polymerization, free radical mechanism, radiation method, and interpenetrating network formation. The synthesized hydrogels have significant properties, such as mechanical strength, biocompatibility, biodegradability, swellability, and stimuli sensitivity. These properties are substantial for electrochemical and biomedical applications. Furthermore, this review emphasizes flexible and self-healable hydrogels as electrolytes for energy storage and energy conversion applications. Insufficient adhesiveness (less interfacial interaction) between electrodes and electrolytes and mechanical strength pose serious challenges, such as delamination of the supercapacitors, batteries, and solar cells. Owing to smart and aqueous hydrogels, robust mechanical strength, adhesiveness, stretchability, strain sensitivity, and self-healability are the critical factors that can identify the reliability and robustness of the energy storage and conversion devices. These devices are highly efficient and convenient for smart, light-weight, foldable electronics and modern pollution-free transportation in the current decade.

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Section: Polymer Hydrogel Electrolytes For Supercapacitorsmentioning

confidence: 99%

Section: Electrochemical Applications Of Polymer Hydrogelsmentioning

confidence: 99%

Section: Electrochemical Applications Of Polymer Hydrogelsmentioning

confidence: 99%

Section: Figurementioning

confidence: 99%

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Fundamental Concepts of Hydrogels: Synthesis, Properties, and Their Applications

et al. 2020

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“…Compared with most previously reported hydrogel electrolyte-based supercapacitors, the Ragone plot of SPMA-ZHS exhibits a higher energy density of 164.13 Wh kg −1 at the power density of 1283.44 Wh kg −1 (Figure 3G, Table S2, Supporting Information). [52][53][54][55][56][57][58][59][60][61][62][63] Cycling performance is an important indicator for the supercapacitors. Cycling stability and coulombic efficiency of SPMA-ZHS were investigated at 10 A g −1 for 5000 charge-discharge cycles.…”

Section: Electrochemical Performancesmentioning

confidence: 99%

A Powder Self‐Healable Hydrogel Electrolyte for Flexible Hybrid Supercapacitors with High Energy Density and Sustainability

Huang

Han

et al. 2021

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detection, [9-15] disease diagnosis, [16-22] soft robotics, [23-27] and artificial intelligence devices. [28-30] With the development of flexible electronic devices, the exploitation of supporting flexible energy storage devices became an urgent requirement. Among different kinds of flexible energy storage devices, hydrogel electrolyte-based supercapacitors display excellent electrochemical performance and have received significant interest due to the good flexibility, conductivity and stability of hydrogel electrolyte. [31-36] However, due to the lack of effective recycling methods, a large number of ineffective flexible hydrogel electrolyte supercapacitors caused by some irreversible mechanical damages, collapse damages, and dryness of hydrogel electrolyte are abandoned, which would induce heavy economic and environmental protection problems. Hence, developing a recyclable flexible hydrogel electrolyte is necessary to meet the sustainability strategy. Self-healing is an effective strategy to overcome the mechanical damage to prolong the service life. Based on the dynamic interactions, the self-healing hydrogel electrolyte can effectively restore the structure after suffering mechanical damage and recover its good electrochemical performance. [37-43] For example, Chen et al. [44] developed a hydrogel electrolyte by double linkers of Laponite (synthetic hectorite-type clay) and graphene oxide with good stretchability, ionic conductivity, and self-healing ability. The supercapacitor assembled by this hydrogel electrolyte demonstrated good electrochemical performance and excellent self-healing ability under the treatments of both infrared light irradiation and heating. Although self-healing could helpfully protect the hydrogel electrolyte from mechanical damage, the hydrogel electrolyte-based supercapacitor still would not work when suffered from collapse damages or dryness of hydrogel electrolyte. In this case, the recyclability of hydrogel electrolyte-based supercapacitors cannot be guaranteed. Pan et al. [45] prepared a multifunctional hydrogel electrolyte with vinylimidazole and hydroxypropyl acrylate. Based on the excellent self-healing and swelling properties of hydrogel electrolyte, the assembled supercapacitor exhibited good electrochemical performance Ionic conductive hydrogel electrolyte is considered to be an ideal electrolyte candidate for flexible supercapacitor due to its flexibility and high conductivity. However, due to the lack of effective recycling methods, a large number of ineffective flexible hydrogel supercapacitors caused by some irreversible damages and dryness of hydrogel electrolyte are abandoned, which would induce heavy economic and environmental protection problems. Herein,a smart ionic conductive hydrogel (SPMA-Zn: ZnSO 4 /sodium alginate/polymethylacrylic acid) is developed for flexible hybrid supercapacitor (SPMA-ZHS). The SPMA-Zn exhibits an excellent self-healing ability and can recover its electrochemical performance after multiple mechanical damages. More importantly, it possess...

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Biomass‐based Electrolytes for Supercapacitor Applications

Nayem¹,

Islam²,

Shah

et al. 2023

Biomass‐Based Supercapacitors

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Modified supramolecular carboxylated chitosan as hydrogel electrolyte for quasi-solid-state supercapacitors

Cited by 53 publications

References 45 publications

Fundamental Concepts of Hydrogels: Synthesis, Properties, and Their Applications

Fundamental Concepts of Hydrogels: Synthesis, Properties, and Their Applications

A Powder Self‐Healable Hydrogel Electrolyte for Flexible Hybrid Supercapacitors with High Energy Density and Sustainability

Biomass‐based Electrolytes for Supercapacitor Applications

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