Piezoelectric boron nitride nanosheets for high performance energy harvesting devices

Kuang, Haoze; Li, Yubo; Huang, Shuyi; Shi, Lin; Zhou, Zheng; Gao, Chenxi; Zeng, Xiangyu; Rajagopalan, Pandey; Wang, Xiaozhi; Dong, Shurong; Chen, Xinhua; Yang, Jianyi; Yang, Hangsheng; Luo, Jikui

doi:10.1016/j.nanoen.2020.105561

Cited by 65 publications

(45 citation statements)

References 40 publications

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“…[38][39][40][41][42][43] A previous study discovered that hair-based material was willing to lose more electrons than Al and Cu by measuring the voltage of them after tapping with a hair-based film. [31] Owing to the higher electron affinity of PDMS, [44,45] in the original position of the HPC-TENG, electrons are transferred from PDMS to hair when they come into contact (Figure 2ai). In this case, the two triboelectric pairs have equal heterogeneous charges, and no charge is induced in the carbon electrode because the two induced charges are fully balanced.…”

Section: Resultsmentioning

confidence: 99%

Wearable Electronics Powered by Triboelectrification between Hair and Cloth for Monitoring Body Motions

et al. 2022

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Diverse triboelectric nanogenerators (TENGs) have been extensively applied in self‐powered wearable electronics. The TENG‐based demonstration using the human body as a triboelectric material is rare, though wearable electronics plays a more and more pivotal role in portable intelligent medicine. Human hair, as part of the human body, can be a component of a TENG‐based wearable system. Herein, a novel body‐based TENG configuration made of human hair and polydimethylsiloxane (PDMS)‐coated carbon cloth is proposed. Due to triboelectrification between the hair and the PDMS layer, the output voltage can deliver 1.713 and 0.377 V in the vertical contact‐separation mode and sliding mode, respectively. In addition, a self‐powered application based on the hair‐based TENG for actively monitoring the motion state by comparing the amplitude and frequency of the output voltages is successfully demonstrated. This study broadens the application of body‐based TENGs and provides a promising and feasible strategy for developing smart health monitoring.

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Section: Resultsmentioning

confidence: 99%

Wearable Electronics Powered by Triboelectrification between Hair and Cloth for Monitoring Body Motions

et al. 2022

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“…The presence of piezoelectricity in multilayer hBN has been predicted theoretically, and the piezoelectric voltage coefficient of 2.35 × 10 −3 VmN −1 has been experimentally confirmed. Applying this, Kuang et al demonstrated the piezoelectric effect of the hBN nanosheet (BNN)-PDMS composite membranes [ 71 ]. The schematic device structure and photos of the BNNS-PDMS/PA6 PTEG are shown in Figure 7 e,f.…”

Section: Self-powered Sensorsmentioning

confidence: 99%

Section: Figurementioning

confidence: 99%

Self-Powered Sensors: New Opportunities and Challenges from Two-Dimensional Nanomaterials

Lee

Yoo

2021

Molecules

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Nanomaterials have gained considerable attention over the last decade, finding applications in emerging fields such as wearable sensors, biomedical care, and implantable electronics. However, these applications require miniaturization operating with extremely low power levels to conveniently sense various signals anytime, anywhere, and show the information in various ways. From this perspective, a crucial field is technologies that can harvest energy from the environment as sustainable, self-sufficient, self-powered sensors. Here we revisit recent advances in various self-powered sensors: optical, chemical, biological, medical, and gas. A timely overview is provided of unconventional nanomaterial sensors operated by self-sufficient energy, focusing on the energy source classification and comparisons of studies including self-powered photovoltaic, piezoelectric, triboelectric, and thermoelectric technology. Integration of these self-operating systems and new applications for neuromorphic sensors are also reviewed. Furthermore, this review discusses opportunities and challenges from self-powered nanomaterial sensors with respect to their energy harvesting principles and sensing applications.

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“…Also, research on triboelectric series of various 2D materials revealed the great potential of TMD as next-generation TENG applications . Furthermore, the synergistic effect of the piezoelectric effect of hexagonal boron nitride nanosheets (BNNs) and the increased electron affinity of BNN–polydimethylsiloxane (PDMS) membranes have been reported, where BNNs are incorporated into PDMS to form composite membranes, and reoriented/polarized BNNs by applying poling electric voltage exhibit increased output piezoelectric properties . Thus, 2D materials are promising candidates as effective triboelectric active materials for future patchable and implantable TENG applications.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Triboelectric Nanogenerator Based on Tungsten Disulfide via Thiolated Ligand Conjugation

Kim

Park

Kang

et al. 2021

ACS Appl. Mater. Interfaces

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Two-dimensional transition-metal dichalcogenides (TMDs) are of particular interest as a new active material for future triboelectric nanogenerators (TENGs) owing to their excellent electrical properties, optical transparency, flexibility, ultrathin thickness, and biocompatibility. Here, we propose a new approach to engineer the surface of TMDs via conjugation with thiolated ligands having different alkane chain lengths and to develop TMD-based TENG devices that exhibit enhanced output performance for the first time. The triboelectric charging behaviors of ligand-conjugated TMDs are successfully investigated, and the electrical output performance of TMD TENGs based on TMD-to-polymer device geometries with a vertical contact-separation mode is dramatically improved, exhibiting an output voltage of 12.2 V and a power density of 138 mW/m 2 . Furthermore, the ligandconjugated TMD TENG device exhibits a highly stable operation under repeated contact and separation over 10 000 cycles, as well as high chemical stability, as a result of novel defect engineering via thiolated ligand conjugation. Detailed investigation reveals that the improved performance of the ligand-conjugated TMD TENG device originates from the synergistic effect of defect engineering and the p-type doping effect of TMDs, correlated with the increased electric potential difference between triboelectric layers. These findings provide a new potential of TMDs as a promising building block for the next-generation energy harvesting system.

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Piezoelectric boron nitride nanosheets for high performance energy harvesting devices

Cited by 65 publications

References 40 publications

Wearable Electronics Powered by Triboelectrification between Hair and Cloth for Monitoring Body Motions

Wearable Electronics Powered by Triboelectrification between Hair and Cloth for Monitoring Body Motions

Self-Powered Sensors: New Opportunities and Challenges from Two-Dimensional Nanomaterials

Enhanced Triboelectric Nanogenerator Based on Tungsten Disulfide via Thiolated Ligand Conjugation

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