Cellulose template-based triboelectric nanogenerators for self-powered sensing at high humidity

Zhang, Wanglin; Chen, Xianghui; Zhao, Jiamin; Wang, Xinyue; Li, Xiuzhen; Liu, Tao; Luo, Bin; Qin, Ying; Zhang, Song; Chi, Mingchao; Wang, Shuangfei; Nie, Shuangxi

doi:10.1016/j.nanoen.2023.108196

Cited by 88 publications

(32 citation statements)

References 35 publications

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“…Second, the exceptional hygroscopicity of LiCl enables the composite film to further efficiently absorb moisture from the atmosphere and precisely regulate its water absorption ability. ,, This results in a multitude of wrinkle structures that significantly increase the area of interaction with the PTFE film during contact. Third, the introduction of two-dimensional MXene nanosheets simultaneously promotes cross-linking of PVA and the formation of microcapacitor networks in the composite film. , The layered structure amplifies the number of active sites and microcapacitor networks of the sheet resulting in an elevated charge storage capacity and ultimately contributing to heightened outputs of TENG. , Ambient humidity can induce a gradient distribution of mobile hydrogen ions (H) within carbon (C) materials containing oxygen-functional groups, and the concentration gradient drives H migration to generate electrical signals. − This innovative approach improves the electrical conductivity and ion transport efficiency, resulting in enhanced output performance and a linear fit degree with humidity for TENGs. These curve fittings serve as a strong foundation and can pave the way for future curve fittings of PL4M-TENGs functioning as power sources under high humidity conditions.…”

Section: Resultsmentioning

confidence: 99%

Self-Powered TENG with High Humidity Sensitivity from PVA Film Modified by LiCl and MXene

Wang,

Xia,

Yao

et al. 2023

ACS Appl. Mater. Interfaces

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Triboelectric nanogenerators (TENGs) are promising for a variety of applications that require a reliable output performance and stability. In this work, by utilizing the synergistic effect of lithium chloride (LiCl) and MXene, poly(vinyl alcohol) (PVA) based composite films with humidity-sensitive properties were prepared and employed as a friction layer to achieve selfpowered TENGs with enhanced output performance under high humidity. The composite material demonstrates exceptional and stable output performance in the humidity range of 30−95% while exhibiting a strong linear correlation with increasing relative humidity (RH). At 95% RH, its short-circuit current increases up to 31.91 μA, which is three times the output of the TENG fabricated by PVA and PTFE (P-TENG). The rich hydroxyl group in PVA, the strong hygroscopicity of LiCl, and the microcapacitor network provided by MXene nanosheets significantly improve the water absorption capacity and surface roughness of the composite material, resulting in an excellent triboelectric output of TENG. Short-circuit current of the TENG in a wide range of RH (from 50% to 98%) responds very sensitively to humidity fluctuations in the environment and superior adsorption−desorption performance as humidity decreases. Furthermore, TENG regarded as a power supply in high humidity conditions was realized and it can light up 240 LEDs instantaneously with the transfer charge density of TENG reaching 194.37 μC m −2 . This technology presents an effective method for stable energy harvesting and self-powered sensing in fog, the ocean, and other high-humidity environments.

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Section: Resultsmentioning

confidence: 99%

Self-Powered TENG with High Humidity Sensitivity from PVA Film Modified by LiCl and MXene

Wang,

Xia,

Yao

et al. 2023

ACS Appl. Mater. Interfaces

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“…[ 236 ] The cellulose network structure formed by the interwoven fibers can increase the filler loading. [ 237 ] Inspired by natural bamboo, Zhao et al. [ 238 ] prepared a unique bamboo/polyaniline (PANI) triboelectric material with a hierarchical porous structure (Figure 9d).…”

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

confidence: 99%

“…[236] The cellulose network structure formed by the interwoven fibers can increase the filler loading. [237] Inspired by natural bamboo, Zhao et al [238] prepared a unique bamboo/polyaniline (PANI) triboelectric material with a hierarchical porous structure (Figure 9d). The hierarchical porous structure provides a template for the construction of 3D conductive networks, enhancing the triboelectric properties of the material and enabling it to maintain stable and efficient power output in extreme environments.…”

Section: Structural Design For Dielectric Modulation Of Cellulosic Tr...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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“…[248][249][250] Using packaging technology, charge modulation, and other methods to improve its versatility in complex environments such as high humidity and high salt to improve its economy and practicality is one of the problems that must be overcome. [251] Finally, it is of great significance to improve the overall output performance by studying the topology of TENG integrated grid to realize the effective harvesting of ocean energy in a large range and the construction of marine energy power stations. [34]…”

Section: Improve Teng Performancementioning

confidence: 99%

Recent Advances in Triboelectric Nanogenerators for Marine Exploitation

Zhang

Hao

Yang

et al. 2023

Advanced Energy Materials

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The ocean, as one of the most important areas for human production and living, plays a vital role in transportation, food production, and energy supply. However, it is greatly desired to develop relevant advanced technologies to achieve efficient and safe ocean exploitation and utilization. The advanced triboelectric nanogenerator (TENG), which can transform mechanical motion into electric energy to achieve the harvesting of related mechanical energy and obtain corresponding mechanical motion characteristics by the corresponding electronic signal, is a significant choice to develop the corresponding advanced technologies for marine exploitation. According to the application field, TENG based marine exploitation researches can be divided into three kinds of researching directions, which contain the in situ ocean energy harvesting, self‐powered ocean monitoring, and self‐powered marine electrochemical technologies. The latest representative research works, which are based on TENG technology for marine exploitation, are classified in detail and summarized comprehensively in this review. More importantly, the specific prospects of TENG in the marine exploitation are discussed in detail to promote future research.

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Cellulose template-based triboelectric nanogenerators for self-powered sensing at high humidity

Cited by 88 publications

References 35 publications

Self-Powered TENG with High Humidity Sensitivity from PVA Film Modified by LiCl and MXene

Self-Powered TENG with High Humidity Sensitivity from PVA Film Modified by LiCl and MXene

Fabrication of Advanced Cellulosic Triboelectric Materials via Dielectric Modulation

Recent Advances in Triboelectric Nanogenerators for Marine Exploitation

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