A mini-review on the dielectric properties of cellulose and nanocellulose-based materials as electronic components

Luo, Qiguan; Shen, Huimin; Zhou, Guofu; Xu, Xuezhu

doi:10.1016/j.carbpol.2022.120449

Cited by 61 publications

(22 citation statements)

References 199 publications

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“…The degradation of performance in ambient atmosphere is mostly due to the effect of ambient humidity and temperature, and is typical for organic transistors . Moreover, ambient conditions such as temperature and humidity are also known to affect the properties of cellulose due to its hygroscopic nature, due to which it absorbs water molecules on the surface, resulting in change in the dielectric properties, leading to changes in the overall performance of the device. Moreover, adsorption of moisture can create traps on the surface of the semiconductor, leading to reduction in the device performance .…”

Section: Resultsmentioning

confidence: 99%

Decomposable Flexible Organic Transistors with a Cellulose-Based Gate Dielectric and Substrate for Biodegradable Electronics

Konwar

Rahi

Tiwari

2023

ACS Appl. Mater. Interfaces

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In this work, decomposable and combustible flexible organic transistors with a cellulose-based dielectric and substrate were demonstrated in an effort to produce biodegradable systems for ecosustainable electronics. High-k cyanoethyl cellulose (CEC) was explored as a suitable gate dielectric candidate for enhancing the biodegradability of flexible devices fabricated on a paper substrate. The fabricated flexible biodegradable transistors exhibited high performance for −5 V operation with excellent saturation in the output characteristics along with remarkable environmental, operational, electromechanical, and thermal stability. Upon thermal annealing, the performance of the devices did not degrade till the temperature of 60 °C, indicating their suitability for practical operating environments. Moreover, the devices exhibited decent stability upon exposure to very high humidity. Most importantly, these devices were decomposed in water-rich soil in 19 days due to the microorganisms present in soil, confirming the excellent biodegradability, which is highly essential for eco-sustainable electronics. Moreover, the combustion of the devices in fire, one of the quickest methods for degradation, led to a significant reduction in mass of more than 75%, leaving ashes primarily consisting of the remains of Ag bottom-gate and Au source/drain electrodes. Our results on the demonstration of flexible devices with full decomposability in soil and high combustibility can be a significant step toward the preparation of fully biodegradable flexible electronics to minimize the effects of e-waste on environment and soil.

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Section: Resultsmentioning

confidence: 99%

Decomposable Flexible Organic Transistors with a Cellulose-Based Gate Dielectric and Substrate for Biodegradable Electronics

Konwar

Rahi

Tiwari

2023

ACS Appl. Mater. Interfaces

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“…This is attributed to the fact that the orientation polarization of the grafted strong polar groups weakens the influence of the inherent strong hydrogen bonds of cellulose, thereby improving the dielectric responsiveness. [ 243 ] The chemical modification method based on group modification has a long research base with mature experience and significant effects, which is worth further exploration and research.…”

Section: Strategies For Dielectric Modulation Of Cellulosic Triboelec...mentioning

confidence: 99%

“…On the one hand, a large number of polar hydroxyl groups make cellulose undergo dipolar polarization under the action of an external electric field, showing a higher dielectric constant than ordinary polymers. [243] On the other hand, the active properties of hydroxyl endow cellulose with good chemical reactivity, which in turn makes it a larger space for chemical modification and more possibilities. [244] Therefore, the use of higher polar groups to replace the hydroxyl groups on the and d) By introducing polar groups, the dielectric constant of cellulose paper is increased, thereby enhancing the triboelectric properties, and the output performance has also been greatly improved.…”

Section: Chemical Modification For Dielectric Modulation Of Cellulosi...mentioning

confidence: 99%

Fabrication of Advanced Cellulosic Triboelectric Materials via Dielectric Modulation

Wang

Liu

et al. 2023

Advanced Science

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The rapid rise of triboelectric nanogenerators (TENGs), which are emerging energy conversion devices in advanced electronics and wearable sensing systems, has elevated the interest in high-performance and multifunctional triboelectric materials. Among them, cellulosic materials, affording high efficiency, biodegradability, and customizability, are becoming a new front-runner. The inherently low dielectric constant limits the increase in the surface charge density. However, owing to its unique structure and excellent processability, cellulose shows great potential for dielectric modulation, providing a strong impetus for its advanced applications in the era of Internet of Things and artificial intelligence. This review aims to provide comprehensive insights into the fabrication of dielectric-enhanced cellulosic triboelectric materials via dielectric modulation. The exceptional advantages and research progress in cellulosic materials are highlighted. The effects of the dielectric constant, polarization, and percolation threshold on the charge density are systematically investigated, providing a theoretical basis for cellulose dielectric modulation. Typical dielectric characterization methods are introduced, and their technical characteristics are analyzed. Furthermore, the performance enhancements of cellulosic triboelectric materials endowed by dielectric modulation, including more efficient energy harvesting, high-performance wearable electronics, and impedance matching via material strategies, are introduced. Finally, the challenges and future opportunities for cellulose dielectric modulation are summarized.

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“…Cellulose, the most prevalent naturally occurring polysaccharide, has received considerable attention as a potential substitute for traditional petroleum-based dielectric materials due to its exceptional renewability and biodegradability as well as its superior dielectric performance. − The abundance of hydroxy (−OH) groups in molecular chains endows cellulose with an impressive dielectric constant (ε r ), surpassing that of most commercial dielectric materials . This is ascribed to the spontaneous alignment of the dipole moments (−OH) along the direction of the applied electric field.…”

mentioning

confidence: 99%

“…22−26 The abundance of hydroxy (−OH) groups in molecular chains endows cellulose with an impressive dielectric constant (ε r ), surpassing that of most commercial dielectric materials. 27 This is ascribed to the spontaneous alignment of the dipole moments (−OH) along the direction of the applied electric field. Moreover, the presence of intra-and intermolecular hydrogen bonding networks further imparts cellulose with excellent mechanical properties and high-temperature tolerance.…”

mentioning

confidence: 99%

Enhanced Dielectric Properties of All-Cellulose Composite Film via Modulating Hydroxymethyl Conformation and Hydrogen Bonding Network

Shi

Lan

et al. 2023

ACS Macro Lett.

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Cellulose-based dielectrics with attractive dielectric performance are promising candidates to develop eco-friendly electrostatic energy storage devices. Herein, all-cellulose composite films with superior dielectric constant were fabricated by manipulating the dissolution temperature of native cellulose, where we revealed the relationship among the hierarchical microstructure of the crystalline structure, the hydrogen bonding network, the relaxation behavior at a molecular level, and the dielectric performance of the cellulose film. The coexistence of cellulose I and cellulose II led to a weakened hydrogen bonding network and unstable C6 conformations. The increased mobility of cellulose chains in the cellulose I-amorphous interphase enhanced the dielectric relaxation strength of side groups and localized main chains. As a result, the as-prepared all-cellulose composite films exhibited a fascinating dielectric constant of as high as 13.9 at 1000 Hz. This work proposed here provides a significant step toward fundamentally understanding the dielectric relaxation of cellulose, thus developing high-performance and eco-friendly cellulose-based film capacitors.

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A mini-review on the dielectric properties of cellulose and nanocellulose-based materials as electronic components

Cited by 61 publications

References 199 publications

Decomposable Flexible Organic Transistors with a Cellulose-Based Gate Dielectric and Substrate for Biodegradable Electronics

Decomposable Flexible Organic Transistors with a Cellulose-Based Gate Dielectric and Substrate for Biodegradable Electronics

Fabrication of Advanced Cellulosic Triboelectric Materials via Dielectric Modulation

Enhanced Dielectric Properties of All-Cellulose Composite Film via Modulating Hydroxymethyl Conformation and Hydrogen Bonding Network

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