Chemically Functionalized Natural Cellulose Materials for Effective Triboelectric Nanogenerator Development

Yao, Chunhua; Yin, Xin; Yu, Yanhao; Cai, Zhiyong; Wang, Xudong

doi:10.1002/adfm.201700794

Cited by 237 publications

(155 citation statements)

References 37 publications

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“…Thus, COFs could offer an attractive structure-function platform for developing appropriate TENG systems.B esides, Wang and co-workers reported that the output performance of TENG could be enhanced by integrating electron withdrawing groups onto cellulose. [28] Herein, we reportt he first example of COFs for TENG application by designingabuilt-in electron withdrawing bromine groups on the skeletons.In this work, we designed and synthesizedan ovel bromine functionalized TPB-DBBA-COF with monomer2 ,5-dibromobenzene-1,4-dicarbaldehyde (DBBA)a sl inker and1 ,3,5-tris (4-aminophenyl) benzene (TPB) as knot ( Figure 1a). The polycondensation reactionsw erec onducted under solvothermal conditions in am ixed solvento fn-butanola nd o-dicholorobenzene in the presence of acetic acid( 6m)a t1 20 8Cf or 3d ays.…”

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Bromine‐Functionalized Covalent Organic Frameworks for Efficient Triboelectric Nanogenerator

Zhai

Cui

Tong

et al. 2020

Chemistry A European J

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Covalent organic frameworks( COFs) enablep recise integration of variouso rganic building blocks into porouss keletons through topology predesign. Here,w e report the first example of COFs by integrating electron withdrawing bromine group onto the skeletons for triboelectricn anogenerators (TENG). The resulting framework exhibits high surface area and good crystallinity.T hus, the brominef unctionalizedC OF has more regular aligned p columns and arrays over the skeleton than bare COFs, which in turn significantly enhances chargetransport ability.A saresult, bromine functionalized COFs showed higher electrical outputp erformance at 5Hzw ith ap eak value of short circuit current density of 43.6 mAa nd outputv oltage of 416 V, which is 2a nd 1.3 times higher than those of bareC OFs (21.6 mAa nd 318 V),r espectively. These results demonstrated that this strategy for engineeringelectron withdrawingg roupso nt he skeleton could open an ew aspect of COFs for developing TENG devices.Triboelectricn anogenerators (TENG) are an ovel device that can effectively convert ambient mechanical energy,s uch as body motion, wind and vibratione nergy into electrical energy. [1] TENG has received increasing attention for harvesting mechanical energy because of their specific advantages,s uch as safety,s mall-size device, and easy fabrication. [2] As for TENG device, the current density ando utput voltage are the critical issuesf or its practical application. Furthermore, the frictional motions,t he environmental factors, especially the structure and functionality of the friction pair materials dominate the output performance of TENG device. [3,4] Although ab road diversityo fm aterials ranging from inorganic to organic have been employedt op repare TENG device, as ystematic and complex molecular design of these materials to manage the consecutive energy conversion process remainasubstantial challenging. [5] Covalent organic frameworks (COFs) are au nique class of crystalline porous materials, which are constructed from organic buildingu nits via reversible chemical reactions. [6] Since the seminal work reported by Yaghi and co-workersi n2 005, [7] great progress over the last decadew as achieved in the exploration of topology diagrams and synthetic reactions. [8][9][10] Benefiting from the features of designable regularp orous structures and versatile functionalities throught opologya nd building blocksd esign,C OFs have been regarded as one of the most promising materials in gas sorption [11,12] and separation, [13,14] sensing, [15] ion conductor, [16,17] catalysis, [18][19][20][21] energy storage, [13b, 22, 23] semiconductor [24, 25] and electronic devices. [26,27] In addition, another inherit advantage of COFs is their densely aligned p columns and arrayso ver the skeleton, which can be utilizedaspre-arranged pathways to facilitate charge transport. This distinct feature is hard to achieve from other inorganic and organic materials. Thus, COFs could offer an attractive structure-function platform for developing appropriate TENG...

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confidence: 99%

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Bromine‐Functionalized Covalent Organic Frameworks for Efficient Triboelectric Nanogenerator

Zhai

Cui

Tong

et al. 2020

Chemistry A European J

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“…Recently, Yao et al employed wet‐chemical reaction approaches to introduce nitro groups and methyl groups, to rationally tune the triboelectric polarity of CNF for TENG application . Nitro‐CNF was achieved by treating CNFs with nitration acid mixture comprising HNO 3 , H 2 SO 4 , and water.…”

Section: Cellulose Nanomaterials For Nanogenerator Developmentsmentioning

confidence: 99%

Cellulose‐Based Nanomaterials for Energy Applications

Wang

Yao

Wang

et al. 2017

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Cellulose is the most abundant natural polymer on earth, providing a sustainable green resource that is renewable, degradable, biocompatible and cost effective. Recently, nanocellulose-based mesoporous structure, flexible thin films, fibers, and networks are increasingly developed and used in photovoltaic devices, energy storage systems, mechanical energy harvesters, and catalysts components, showing tremendous materials science value and application potential in many energy-related fields. In this review article, we review the most recent advancements of processing, integration and application of cellulose nanomaterials in the areas of solar energy harvesting, energy storage, and mechanical energy harvesting. For solar energy harvesting, promising applications of cellulose-based nanostructures for both solar cells and photoelectrochemical electrodes development are reviewed, and their morphology-related merits are discussed. For energy storage, our discussion is primarily focused on the applications of cellulose-based nanomateriales in lithium ion batteries, including electrodes (e.g. active materials, binders and structural support), electrolytes, and separators. Applications of cellulose nanomaterials in supercapacitors are also overviewed briefly. For mechanical energy harvesting, we review the most recent technology evolution of cellulose-based triboelectric nanogenerators, from fundamental property tuning to practical implementations. At last, the future research potential and opportunities of cellulose nanomaterials as a new energy material are commented.

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“…As to PDMS‐PTFE samples, as shown in the high‐resolution XPS spectra (Figure c), the O 1s spectra of PDMS‐PTFE films can be deconvoluted into one more CO bond located at 531.2 eV except for 532.7 eV for PDMS. It also can be determined from C 1s spectra (Figure d), which has a new chemical bond of CO peak of 286.5 eV for the PDMS‐PTFE films . Moreover, the CF bond positioned at 288.4 eV is increased with the doping.…”

Section: Resultsmentioning

confidence: 92%

High‐Performance Transparent and Flexible Triboelectric Nanogenerators Based on PDMS‐PTFE Composite Films

Wang

et al. 2019

Adv Elect Materials

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energy, including solar energy, wind energy, water energy, and bioenergy. Triboelectric nanogenerator (TENG), based on contact electrification and electrostatic induction, was emerging in 2012, [1] which has arisen enormous interest in recent years owing to its ability to harvest energy and convert the energy to electrical energy from human everyday activities, [2,3] the environment of nature, [4][5][6] and similar mechanical motions. TENG shows a wide range of potential applications, such as identified keyboard, [7] sensor power for monitoring driver behavior, [8] smart seat as signal generator, [9] or even the power source for implantable devices, [10] and wearable electronics. [11] Among various kinds of triboelectric materials, poly(dimethylsiloxane) (PDMS) is a kind of ideal negative friction layer candidate due to its high electronegativity, good transparency, and flexibility. [12] Although there are so many advantages of PDMS, there is still a long way to improve the output characteristics of PDMS-based TENG, which can better satisfy the energy needs of various devices in the future. Many researchers have proposed diverse methods such as increasing actual triboelectric area by the preparation of surface micro-nanostructures using photolithography templates, [13][14][15] and surface physical/chemical treatments. [14,16] Unfortunately, these methods often require complicated processes or delicate instruments. In addition, dielectric materials [17,18] or conductive materials [19,20] can be doped in PDMS to build micro-capacitance structures to improve output characteristics. However, these often deteriorate the transparency and flexibility of TENG. Although the PTFE material has attracted much attention due to high electronegativity for TENG applications, [21][22][23][24][25][26][27] its transparence is still far from satisfactory. Here it should be noted that the integration of flexible and transparent characteristics has attracted much attention, and various kinds of novel optoelectronic and electronic devices have been developed in recent years, including artificial skins, [28,29] various sensors, [30,31] and transistors. [32,33] In this study, one simple and low-cost method was demonstrated to modify the PDMS film as the negative friction layer of TENG without degrading its transparency and flexibility, and meanwhile the output performance was obviously improved.

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Chemically Functionalized Natural Cellulose Materials for Effective Triboelectric Nanogenerator Development

Cited by 237 publications

References 37 publications

Bromine‐Functionalized Covalent Organic Frameworks for Efficient Triboelectric Nanogenerator

Bromine‐Functionalized Covalent Organic Frameworks for Efficient Triboelectric Nanogenerator

Cellulose‐Based Nanomaterials for Energy Applications

High‐Performance Transparent and Flexible Triboelectric Nanogenerators Based on PDMS‐PTFE Composite Films

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