Fully wood-based green triboelectric nanogenerators

Bang, Jangwon; Moon, In Kyu; Jeon, Young Pyo; Ki, Bugeun; Oh, Jungwoo

doi:10.1016/j.apsusc.2021.150806

Cited by 35 publications

(26 citation statements)

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“…165,166 Functionalization with aminosilanes and fluorinated silanes has also been reported to make delignified densified wood respectively more tribopositive and tribonegative. 167 A nanogenerator made with a fluoropolymer (FEP) tribonegative electrode and a counter electrode made with delignified wood impregnated with single-walled carbon nanotubes (SWCNTs) has been claimed to allow energy harvesting and gas sensing at the same time. 168 Exposure to ppm amounts of ammonia gas resulted in a decrease of the electrical output which, coupled with good resistance against humidity and low temperatures, makes such nanogenerator potentially useful in smart packaging, to help detect spoilage of high-protein foods.…”

Section: Energy-conversion Woodmentioning

confidence: 99%

Emerging Engineered Wood for Building Applications

et al. 2022

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The building sector, including building operations and materials, was responsible for the emission of ∼11.9 gigatons of global energy-related CO2 in 2020, accounting for 37% of the total CO2 emissions, the largest share among different sectors. Lowering the carbon footprint of buildings requires the development of carbon-storage materials as well as novel designs that could enable multifunctional components to achieve widespread applications. Wood is one of the most abundant biomaterials on Earth and has been used for construction historically. Recent research breakthroughs on advanced engineered wood products epitomize this material’s tremendous yet largely untapped potential for addressing global sustainability challenges. In this review, we explore recent developments in chemically modified wood that will produce a new generation of engineered wood products for building applications. Traditionally, engineered wood products have primarily had a structural purpose, but this review broadens the classification to encompass more aspects of building performance. We begin by providing multiscale design principles of wood products from a computational point of view, followed by discussion of the chemical modifications and structural engineering methods used to modify wood in terms of its mechanical, thermal, optical, and energy-related performance. Additionally, we explore life cycle assessment and techno-economic analysis tools for guiding future research toward environmentally friendly and economically feasible directions for engineered wood products. Finally, this review highlights the current challenges and perspectives on future directions in this research field. By leveraging these new wood-based technologies and analysis tools for the fabrication of carbon-storage materials, it is possible to design sustainable and carbon-negative buildings, which could have a significant impact on mitigating climate change.

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Section: Energy-conversion Woodmentioning

confidence: 99%

Emerging Engineered Wood for Building Applications

et al. 2022

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“…In addition to being a positive triboelectric material for TENG, lignocellulose has also been developed as a negative triboelectric by adding strong electron absorption groups through modification. For instance, Bang et al explored an all-wood green TENG [ 77 ]. Flexible porous wood triboelectric layers were utilized as positive and negative materials to increase the triboelectric output of TENG.…”

Section: Current Progress In Bd-tengsmentioning

confidence: 99%

Biodegradable Polymers in Triboelectric Nanogenerators

Yin

Shi

et al. 2022

Polymers

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Triboelectric nanogenerators (TENGs) have attracted much attention because they not only efficiently harvest energy from the surrounding environment and living organisms but also serve as multifunctional sensors toward the detection of various chemical and physical stimuli. In particular, biodegradable TENG (BD-TENG) represents an emerging type of self-powered device that can be degraded, either in physiological environments as an implantable power source without the necessity of second surgery for device retrieval, or in the ambient environment to minimize associated environmental pollution. Such TENGs or TNEG-based self-powered devices can find important applications in many scenarios, such as tissue regeneration, drug release, pacemakers, etc. In this review, the recent progress of TENGs developed on the basis of biodegradable polymers is comprehensively summarized. Material strategies and fabrication schemes of biodegradable and self-powered devices are thoroughly introduced according to the classification of plant-degradable polymer, animal-degradable polymer, and synthetic degradable polymer. Finally, current problems, challenges, and potential opportunities for the future development of BD-TENGs are discussed. We hope this work may provide new insights for modulating the design of BD-TNEGs that can be beneficial for both environmental protection and healthcare.

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“…Synthetic polymers like PTFE, polyvinylidene fluoride (PVDF), Kapton, PDMS, and polyethylene terephthalate (PET) as typical TENG materials 38,65,[93][94][95] can release dangerous chemicals to the environment due to their incomplete degradation. 96 Thus, recently, there has been a great deal of development of bio-based TENGs by employing eco-friendly, simple, low-cost, degradable, and renewable biomaterials such as wood, [97][98][99][100][101] silk, [102][103][104][105][106][107][108][109][110] cellulose, 101,[111][112][113][114][115][116][117][118][119][120][121] starch, 96,120,122,123 and chitosan [124][125][126] instead of non-renewable synthetic polymers.…”

Section: Developing Biomaterial-based Tengsmentioning

confidence: 99%