High-strength, highly conductive and woven organic hydrogel fibers for flexible electronics

Wang, Xiangdong; Wang, Xiaoyu; Pi, Menghan; Ran, Rong

doi:10.1016/j.cej.2021.131172

Cited by 59 publications

(47 citation statements)

References 53 publications

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“…The organohydrogels and H-TENGs both showed very stable weights after storage for 15 days at room temperature (Figure 7d). Similarly, Wang et al [102] have immersed PVA/hydroxyethyl cellulose (HEC) hydrogels in salt/glycerol/water solution. The obtained organohydrogels showed both high conduc-tivity of 5.77 S m −1 and excellent temperature tolerance of −35-65 °C.…”

Section: Temperature Tolerancementioning

confidence: 99%

“…Consequently, the V OC and J SC values of the corresponding TENG were also larger than those without double network and/or sodium bonds. On the other hand, Wang et al [102] have immersed PVA/HEC hydrogels in the salt glycerol/water solution. As shown in Figure 8d, different kinds and concentrations of salt solutions resulted in different conductivities.…”

Section: Conductivity Enhancementmentioning

confidence: 99%

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Hydrogels as Soft Ionic Conductors in Flexible and Wearable Triboelectric Nanogenerators

Luo

Cuthbert

et al. 2022

Advanced Science

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Flexible triboelectric nanogenerators (TENGs) have attracted increasing interest since their advent in 2012. In comparison with other flexible electrodes, hydrogels possess transparency, stretchability, biocompatibility, and tunable ionic conductivity, which together provide great potential as current collectors in TENGs for wearable applications. The development of hydrogel-based TENGs (H-TENGs) is currently a burgeoning field but research efforts have lagged behind those of other common flexible TENGs. In order to spur research and development of this important area, a comprehensive review that summarizes recent advances and challenges of H-TENGs will be very useful to researchers and engineers in this emerging field. Herein, the advantages and types of hydrogels as soft ionic conductors in TENGs are presented, followed by detailed descriptions of the advanced functions, enhanced output performance, as well as flexible and wearable applications of H-TENGs. Finally, the challenges and prospects of H-TENGs are discussed.

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Section: Temperature Tolerancementioning

confidence: 99%

Section: Conductivity Enhancementmentioning

confidence: 99%

Hydrogels as Soft Ionic Conductors in Flexible and Wearable Triboelectric Nanogenerators

Luo

Cuthbert

et al. 2022

Advanced Science

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“…Cellulosic biopolymers are listed with its respective industries. For instance, high performance strain sensor and electromagnetic interference (EMI) shielding application, used cellulose hydrogels or as nanocellulose composites, respectively (Anju, 2021;Wang et al, 2022;Zhang et al, 2022a), representing the electronic industry. The former as being tested for its biomimetic skin with adequate mechanical properties containing nanocellulose or microcrystalline cellulose (MCC) for instance of 50 µm in size where the hydrogel was fabricated chemically via crosslinking and under cryogenically lower temperature of − 20 °C.…”

Section: Cellulosic Fibersmentioning

confidence: 99%

“…The former as being tested for its biomimetic skin with adequate mechanical properties containing nanocellulose or microcrystalline cellulose (MCC) for instance of 50 µm in size where the hydrogel was fabricated chemically via crosslinking and under cryogenically lower temperature of − 20 °C. Meanwhile, in the latter, a modified (Anju, 2021;Wang et al, 2022;Zhang et al, 2022a) Cellular/cellulose membrane, biomembrane, nanocellulose membrane, pollutant adsorbent Downstream processing industry (Alipour et al, 2020;Das et al, 2021;Perendija et al, 2021;Wang et al, 2020;Zhang et al, 2022b) Leaf fibers, sisal fibers, agrofibers, cellulose fibers Foams, polyester, PLA, biodegradable plastics (Bendourou et al, 2021;Guimarães et al, 2021;Jabber et al, 2021;Sathees Kumar et al, 2021;Siva et al, 2020) Modified/regenerated cotton cellulose Fabric industry (Khalili et al, 2021;Štular et al, 2021) Wood-cellulose fiber, graphitic cellufoil, SnS/ carbonized cellulose film Energy industry, battery industries (lithiumion battery), nanogenerators (Yi et al, 2021;Yuan et al, 2021;Zhang et al, 2021) Fluorescent smart materials Fluorescent application (Delavari et al, 2020;Kalita et al, 2015;Nawaz et al, 2021) Dietary fiber, bacterial cellulose Food industry (Lin et al, 2020;Revin et al, 2018;Zhu et al, 2022)…”

Section: Cellulosic Fibersmentioning

confidence: 99%

Cellulosic fiber nanocomposite application review with zinc oxide antimicrobial agent nanoparticle: an opt for COVID-19 purpose

Azizan

Samsudin

Baharin

et al. 2022

Environ Sci Pollut Res

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Cellulosic fiber (CF) in nanoform is emergingly finding its way for COVID-19 solution for instance via nanocomposite/ nanoparticle from various abundant biopolymeric waste materials, which may not be widely commercialized when the pandemic strikes recently. The possibility is wide open but needs proper collection of knowledge and research data. Thus, this article firstly reviews CF produced from various lignocellulosic or biomass feedstocks' pretreatment methods in various nanoforms or nanocomposites, also serving together with metal oxide (MeO) antimicrobial agents having certain analytical reporting. CF-MeO hybrid product can be a great option for COVID-19 antimicrobial resistant environment to be proposed considering the long-established CF and MeO laboratory investigations. Secondly, a preliminary pH investigation of 7 to 12 on zinc oxide synthesis discussing on Fouriertransform infrared spectroscopy (FTIR) functional groups and scanning electron microscope (SEM) images are also presented, justifying the knowledge requirement for future stable nanocomposite formulation. In addition to that, recent precursors suitable for zinc oxide nanoparticle synthesis with emergingly prediction to serve as COVID-19 purposes via different products, aligning with CFs or nanocellulose for industrial applications are also reviewed.

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“…Once separated, electrostatic potential difference was created on the surface of the two tribolayers. Meanhile, the design of H-TENGs was slightly different to that of conventional ones, in which the hydrogel that acted as conductor was usually encapsulated in elastomeric materials, and then connected to wires as electrodes for TENGs [ 34 , 35 , 36 , 37 , 38 , 39 ]. According to the different transportation in conductivity of conductive components, hydrogel conductors can be further divided into ionic and electronic ones, which result in different charge transfer behaviors as demonstrated in Figure 1 [ 40 , 41 , 42 ].…”

Section: Introductionmentioning

confidence: 99%

Development and Applications of Hydrogel-Based Triboelectric Nanogenerators: A Mini-Review

Wang

Jing

et al. 2022

Polymers

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In recent years, with the appearance of the triboelectric nanogenerator (TENG), there has been a wave of research on small energy harvesting devices and self-powered wearable electronics. Hydrogels—as conductive materials with excellent tensile properties—have been widely focused on by researchers, which encouraged the development of the hydrogel-based TENGs (H-TENGs) that use the hydrogel as an electrode. Due to the great feasibility of adjusting the conductivity and mechanical property as well as the microstructure of the hydrogels, many H-TENGs with excellent performance have emerged, some of which are capable of excellent outputting ability with an output voltage of 992 V, and self-healing performance which can spontaneously heal within 1 min without any external stimuli. Although there are numerous studies on H-TENGs with excellent performance, a comprehensive review paper that systematically correlates hydrogels’ properties to TENGs is still absent. Therefore, in this review, we aim to provide a panoramic overview of the working principle as well as the preparation strategies that significantly affect the properties of H-TENGs. We review hydrogel classification categories such as their network composition and their potential applications on sensing and energy harvesting, and in biomedical fields. Moreover, the challenges faced by the H-TENGs are also discussed, and relative future development of the H-TENGs are also provided to address them. The booming growth of H-TENGs not only broadens the applications of hydrogels into new areas, but also provides a novel alternative for the sustainable power sources.

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High-strength, highly conductive and woven organic hydrogel fibers for flexible electronics

Cited by 59 publications

References 53 publications

Hydrogels as Soft Ionic Conductors in Flexible and Wearable Triboelectric Nanogenerators

Hydrogels as Soft Ionic Conductors in Flexible and Wearable Triboelectric Nanogenerators

Cellulosic fiber nanocomposite application review with zinc oxide antimicrobial agent nanoparticle: an opt for COVID-19 purpose

Development and Applications of Hydrogel-Based Triboelectric Nanogenerators: A Mini-Review

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