Improving the surface charge density of a contact-separation-based triboelectric nanogenerator by modifying the surface morphology

Mahmud, Arafat; Lee, Jaejong; Kim, GeeHong; Lim, Hyungjun; Choi, Kee-Bong

doi:10.1016/j.mee.2016.02.066

Cited by 86 publications

(31 citation statements)

References 18 publications

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“…The LCA methodology is formed based on ISO 14040:2006 to ISO 14044:2006 [18,19]. The datasets are collected from the ecoinvent database [20,21], which originate from Hischier et al [22].…”

Section: Methodsmentioning

confidence: 99%

Comparative Life Cycle Environmental Impact Analysis of Lithium-Ion (LiIo) and Nickel-Metal Hydride (NiMH) Batteries

et al. 2019

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Batteries have been extensively used in many applications; however, very little is explored regarding the possible environmental impacts for their whole life cycle, even though a lot of studies have been carried out for augmenting performance in many ways. This research paper addresses the environmental effects of two different types of batteries, lithium-ion (LiIo) and nickel-metal hydride (NiMH) batteries, in terms of their chemical constituents. Life cycle impact analysis has been carried out by the CML, ReCiPe, EcoPoints 97, IPCC, and CED methods. The impacts are considered in categories such as global warming, eutrophication, freshwater aquatic ecotoxicity, human toxicity, marine aquatic ecotoxicity and terrestrial ecotoxicity. The results reveal that there is a significant environmental impact caused by nickel-metal hydride batteries in comparison with lithium-ion batteries. The reason behind these impacts is the relatively large amount of toxic chemical elements which are present as constituents of NiMH batteries. It can be anticipated that a better environmental performance can be achieved through optimization, especially by cautiously picking the constituents, taking into account the toxicity aspects, and by minimizing the impacts related to these chemicals.

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“…The LCA methodology is formed based on ISO 14040:2006 to ISO 14044:2006 [18,19]. The datasets are collected from the ecoinvent database [20,21], which originate from Hischier et al [22].…”

Section: Methodsmentioning

confidence: 99%

Comparative Life Cycle Environmental Impact Analysis of Lithium-Ion (LiIo) and Nickel-Metal Hydride (NiMH) Batteries

et al. 2019

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“…Figure 3 shows a typical self‐powered implantable triboelectric active sensor, which provides precise, continuous and real‐time biomedical monitoring of multiple physiological signals. The power conversion by the iTENG can be enhanced by controlling the electron affinity, surface work function, chemical structure of the triboelectric material, contacting‐separating speed, pressure, surface roughness of materials . Therefore, iTENGs hold a great potential in the future of the health care industry in real‐time or continuous power‐harvesting biomedical devices that are do not require an external power supply.…”

Section: Implantable Triboelectric Nanogenerator (Iteng)mentioning

confidence: 99%

Recent Advances in Nanogenerator‐Driven Self‐Powered Implantable Biomedical Devices

Mahmud

Huda

Farjana

et al. 2017

Advanced Energy Materials

168

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Implantable medical devices (IMDs) have experienced a rapid progress in recent years to the advancement of state-of-the-art medical practices. However, the majority of this equipment requires external power sources like batteries to operate, which may restrict their application for in vivo situations. Furthermore, these external batteries of the IMDs need to be changed at times by surgical processes once expired, causing bodily and psychological annoyance to patients and rising healthcare financial burdens. Currently, harvesting biomechanical energy in vivo is considered as one of the most crucial energybased technologies to ensure sustainable operation of implanted medical devices. This review aims to highlight recent improvements in implantable triboelectric nanogenerators (iTENG) and implantable piezoelectric nanogenerators (iPENG) to drive self-powered, wireless healthcare systems. Furthermore, their potential applications in cardiac monitoring, pacemaker energizing, nerve-cell stimulating, orthodontic treatment and real-time biomedical monitoring by scavenging the biomechanical power within the human body, such as heart beating, blood flowing, breathing, muscle stretching and continuous vibration of the lung are summarized and presented. Finally, a few crucial problems which significantly affect the output performance of iTENGs and iPENGs under in vivo environments are addressed. Implantable Nanogenerators

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“…A frequently utilized method to increase the electrical output performance of TENG is to insert micro/nanostructures on the surface of the contact layer. According to literature, inserting micro/nanostructures increases local contact pressure and local contact area; this condition generates a large amount of electrical charges on the contact layer of TENG [5,[31][32][33][34][35][36][37]. Previous methods used to fabricate micro/nanostructures on the contact layer of TENG are based mostly on two approaches: Surface etching and replication.…”

Section: Introductionmentioning

confidence: 99%

Facile Tailoring of Contact Layer Characteristics of the Triboelectric Nanogenerator Based on Portable Imprinting Device

Cho

Jang

et al. 2020

Materials

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Renewable energy harvesting technologies have been actively studied in recent years for replacing rapidly depleting energies, such as coal and oil energy. Among these technologies, the triboelectric nanogenerator (TENG), which is operated by contact-electrification, is attracting close attention due to its high accessibility, light weight, high shape adaptability, and broad applications. The characteristics of the contact layer, where contact electrification phenomenon occurs, should be tailored to enhance the electrical output performance of TENG. In this study, a portable imprinting device is developed to fabricate TENG in one step by easily tailoring the characteristics of the polydimethylsiloxane (PDMS) contact layer, such as thickness and morphology of the surface structure. These characteristics are critical to determine the electrical output performance. All parts of the proposed device are 3D printed with high-strength polylactic acid. Thus, it has lightweight and easy customizable characteristics, which make the designed system portable. Furthermore, the finger tapping-driven TENG of tailored PDMS contact layer with microstructures is fabricated and easily generates 350 V of output voltage and 30 μA of output current with a simple finger tapping motion-related biomechanical energy.

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Improving the surface charge density of a contact-separation-based triboelectric nanogenerator by modifying the surface morphology

Cited by 86 publications

References 18 publications

Comparative Life Cycle Environmental Impact Analysis of Lithium-Ion (LiIo) and Nickel-Metal Hydride (NiMH) Batteries

Comparative Life Cycle Environmental Impact Analysis of Lithium-Ion (LiIo) and Nickel-Metal Hydride (NiMH) Batteries

Recent Advances in Nanogenerator‐Driven Self‐Powered Implantable Biomedical Devices

Facile Tailoring of Contact Layer Characteristics of the Triboelectric Nanogenerator Based on Portable Imprinting Device

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