Using TEMPO-oxidized-nanocellulose stabilized carbon nanotubes to make pigskin hydrogel conductive as flexible sensor and supercapacitor electrode: Inspired from a Chinese cuisine

Wu, Ying; Sun, Simiao; Geng, Aobo; Wang, Linjie; Song, Changhui; Xu, Lijie; Jia, Chong; Shi, Jiangtao; Gan, Lu

doi:10.1016/j.compscitech.2020.108226

Cited by 45 publications

(20 citation statements)

References 31 publications

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“…Furthermore, the sensor fixed on the forehead, the eye corner, and the “Adam’s apple” was able to sense subtle body motions such as facial microexpression and pronunciation (Figure i,j). Similarly, Wu et al reported an conductive cellulose nanocomposite hydrogels with a homogeneous nanocellulose stabilized CNTs network incorporated into a pigskin hydrogel network. The flexible and wearable piezoresistive strain sensor constructed from the prepared conductive hydrogel was capable of the continuous and real-time detection of bodily motions.…”

Section: Polysaccharide-based Hydrogel Sensorsmentioning

confidence: 96%

“…Cellulose-based conductive hydrogels have been developed as robust platforms for sensor-related applications because of their good biocompatibility and biodegradability, renewability, and attractive and tailorable physiochemical properties (e.g., superior flexibility, tunable mechanical and electrical properties). − In this section, some typical wearable sensors based on cellulose-based conductive hydrogels are summarized including material and structural designs as well as properties to achieve high-performance wearable sensors including strain, pressure, temperature, and multifunctional sensors. ,,− ,− ,,, …”

Section: Polysaccharide-based Hydrogel Sensorsmentioning

confidence: 99%

“…Electronic conductive cellulose nanocomposite hydrogels refer to a class of electronic conductive cellulose-based hydrogels (ECCHs), which are usually constructed by integrating the homogeneous nanocellulose/electronic conductors dispersion into a hydrogel matrix . The synergistic effects of the nanocellulose/electronic conductors network and the hydrogel network may not only help build a high-efficiency percolation conductive network and improve mechanical properties including stretchability, strength, and toughness, modulus but also endow the cellulose nanocomposite hydrogels distinctive properties including plasticity, shape-recovery, self-healing, self-adhesive, conformablility, high sensitivity, and multisensory property. − ,− …”

Section: Polysaccharide-based Hydrogel Sensorsmentioning

confidence: 99%

“…Currently, carbon materials such as CNTs have been widely used to establish 3D-conductive networks within hydrogel matrices, which play vital roles in constructing electron transport channels via π-conjugated structure and enhancing the mechanical performance of the materials by virtue of their appealing mechanical and electrochemical properties including high specific surface area, high mechanical strength, high conductivity, and abundant surface functionalities. ,,, Inspired by the structure and superb antifatigue-fracture properties of biological skin, Su et al demonstrated a multifunctional and extraordinarily durable nanocomposite hydrogel by integrating partial crystalline fibrous cellulose nanocrystals/carbon nanotubes (CNCs@CNTs) within the hydrophobic association polyacrylamide (HAPAM) hydrogel (Figure f). The well-dispersed CNCs@CNTs interconnected with each other in hydrogel matrices built successfully a conductive and nanoreinforced network with partially crystallized nanostructures.…”

Section: Polysaccharide-based Hydrogel Sensorsmentioning

confidence: 99%

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Recent Progress in Natural Biopolymers Conductive Hydrogels for Flexible Wearable Sensors and Energy Devices: Materials, Structures, and Performance

Cui

Meng

et al. 2020

ACS Appl. Bio Mater.

223

149

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Natural biopolymer-based conductive hydrogels, which combine inherent renewable, nontoxic features, biocompatibility and biodegradability of biopolymers, and excellent flexibility and conductivity of conductive hydrogels, exhibit great potential in applications of wearable and stretchable sensing devices. Compared to traditional flexible substrates deriving from petro-materials-derived polymers, conductive hydrogels consisting of continuous cross-linked polymer networks and a large amount of water exhibit more fantastic combination of stretchability and conductivity because their polymer networks endow the hydrogels with mechanical flexibility and the water offers them a consecutive ionic transport property. Different from petro-materials-derived polymers, biopolymers that are extracted from bioresource with intrinsic biocompatibility and biodegradability are commonly considered as appropriate candidates for constructing wearable devices. For example, biopolymers such as cellulose, chitosan, and silk fibroin are usually chosen as promising candidates to construct conductive hydrogels, endowing the hydrogels with enhanced mechanical properties and remarkable biocompatibility. This review summarizes the recent progress of natural biopolymer-based conductive hydrogels that are utilized for electrical sensing devices with a series of typical biopolymers including cellulose, chitosan, silk fibroin, and gelatin. The chemical structures and physicochemical properties of the four typical biopolymers are demonstrated, and their applications in diverse conductive hydrogel sensors are discussed in detail. Finally, the remaining challenges and expectations are discussed.

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Section: Polysaccharide-based Hydrogel Sensorsmentioning

confidence: 96%

Section: Polysaccharide-based Hydrogel Sensorsmentioning

confidence: 99%

Section: Polysaccharide-based Hydrogel Sensorsmentioning

confidence: 99%

Section: Polysaccharide-based Hydrogel Sensorsmentioning

confidence: 99%

See 2 more Smart Citations

Recent Progress in Natural Biopolymers Conductive Hydrogels for Flexible Wearable Sensors and Energy Devices: Materials, Structures, and Performance

Cui

Meng

et al. 2020

ACS Appl. Bio Mater.

223

149

View full text Add to dashboard Cite

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“…This conductive hydrogel could swiftly and precisely respond to cyclic tensile/pressure forces with stable and repeatable resistance change signals, as well as perform real-time detection of the movements of different human body parts. Furthermore, specific capacitance of 65 F/g and capacitance retention of 60% after 2000 cycles were measured [ 147 ].…”

Section: Applications Of Cns-based Functional Materials In Supercapacitorsmentioning

confidence: 99%

Cellulose-Derived Nanostructures as Sustainable Biomass for Supercapacitors: A Review

Kumar

2022

Polymers

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Sustainable biomass has attracted a great attention in developing green renewable energy storage devices (e.g., supercapacitors) with low-cost, flexible and lightweight characteristics. Therefore, cellulose has been considered as a suitable candidate to meet the requirements of sustainable energy storage devices due to their most abundant nature, renewability, hydrophilicity, and biodegradability. Particularly, cellulose-derived nanostructures (CNS) are more promising due to their low-density, high surface area, high aspect ratio, and excellent mechanical properties. Recently, various research activities based on CNS and/or various conductive materials have been performed for supercapacitors. In addition, CNS-derived carbon nanofibers prepared by carbonization have also drawn considerable scientific interest because of their high conductivity and rational electrochemical properties. Therefore, CNS or carbonized-CNS based functional materials provide ample opportunities in structure and design engineering approaches for sustainable energy storage devices. In this review, we first provide the introduction and then discuss the fundamentals and technologies of supercapacitors and utilized materials (including cellulose). Next, the efficacy of CNS or carbonized-CNS based materials is discussed. Further, various types of CNS are described and compared. Then, the efficacy of these CNS or carbonized-CNS based materials in developing sustainable energy storage devices is highlighted. Finally, the conclusion and future perspectives are briefly conferred.

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A Multifunctional Skin‐Like Sensor Based on Liquid Metal Activated Gelatin Organohydrogel

Zong

et al. 2022

Adv Materials Inter

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experience is dramatically improved. Despite the advantages, there are still existing challenges hindering the hydrogelbased soft electronics toward practical use. Particularly, most of the conductive hydrogels are comparing conductive nano-fillers (e.g., metal nano wire, [9,10] graphene, [11] carbon nanotubes, [12] and Perovskite [13] ) and polymer networks. [14,15] The mechanical mismatch between the rigid filler and soft polymer bulk will lead to concentrated internal stress and further affect the performance and lifetime of conductive hydrogel.In the past decade, liquid metals (LMs) [16][17][18] are emerging as novel conductive fillers for soft electronics, and among them, eutectic gallium and indium alloys (EGaIn) are the most widely used due to their negligible toxicity, low cost, and good thermal and electrical conductivity. More importantly, the melting point could be controlled below room temperature by appropriately adjusting the ratio of the Ga and In components, thus rendering EGaIn excellent ductility and fluidity to address the issues caused by rigid conductive fillers. Many studies have shown by using ultrasonic treatment, [19][20][21][22][23] EGaIn could be effectively dispersed in hydrophilic polymer precursor solutions, including polyvinyl alcohol, acrylic acid, and acryl amide. [24][25][26][27][28] After gelation process EGaIn is well distributed in polymer matrix as micro or nano size droplets, and the resulted hydrogels are endowed with unique thermal or electrical properties for different applications, such as tunable actuator or pressure sensor to discern bodily motions. However, it is noticeable that there is a reluctant use of peroxide initiator and toxic crosslinker for polymerization. The leaking risk of these agents and the poor degradability of the synthetic polymers have limited the hydrogels for bioengineering and in vivo biomedicals.Nowadays, with the increasing demand for ecologically sustainable and environment friendly materials, biopolymers are encouraged to replace the synthetic polymers to explore new advances in soft electronics. Generally, polysaccharide [29][30][31] and polypeptide [32,33] are the two typical types of biopolymers abundant in plants and animals, respectively. Since they are naturally occurred, biopolymers inherit the diverse structures and topologies in nature thus avoiding the toxic and complex polymeric synthesis process. In addition, due to their biodegradability and biocompatibility, biopolymers are extremely suitable for the use in wearable, [34] Gelatin, as a polypeptide-based biopolymer derived from animal resources, has a great potential to take the place of synthetic polymers for the development of next-generation electronic skin with enhanced biocompatibility and biodegradability. However, the soft and brittle nature of polypeptide hydrogel still remains as a challenge hindering its step to achieve skinlike properties and toward practical applications. Herein, a gelatin-based organohydrogel using liquid metal (LM) nanodroplets as functional filler...

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Using TEMPO-oxidized-nanocellulose stabilized carbon nanotubes to make pigskin hydrogel conductive as flexible sensor and supercapacitor electrode: Inspired from a Chinese cuisine

Cited by 45 publications

References 31 publications

Recent Progress in Natural Biopolymers Conductive Hydrogels for Flexible Wearable Sensors and Energy Devices: Materials, Structures, and Performance

Recent Progress in Natural Biopolymers Conductive Hydrogels for Flexible Wearable Sensors and Energy Devices: Materials, Structures, and Performance

Cellulose-Derived Nanostructures as Sustainable Biomass for Supercapacitors: A Review

A Multifunctional Skin‐Like Sensor Based on Liquid Metal Activated Gelatin Organohydrogel

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