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International Conference on Mechanical, Materials and Renewable Energy IOP Publishing IOP Conf. Series: Materials Science and Enginee1ri2n3g4357678(920‘1’8“)” 012186 doi:10.1088/1757-899X/377/1/012186 A Critical Review on Triboelectric Nanogenerator Saurabh Rathore*1, Shailendra Sharma1, Bibhu P Swain2, Ranjan Kr. Ghadai1 1Department of Mechanical Engineering, Sikkim Manipal Institute of Technology, Majitar, Rangpo-737136 2Centre for Materials Science and Nanotechnology, Sikkim Manipal Institute of Technology, Majitar, Rangpo-737136 *Corresponding author: ranjankumarbls@gmail.com Abstract. With the modernization of the technology with time, the demand for energy is increasing day by day, it is necessary to find out the new sources of renewable energy. The fossil fuels upon which the maximum energy has been produced till date are going to be depleted soon. A triboelectric nanogenerator (TENG) is new source of energy firstly demonstrated by Wang et al. in 2012, working basically on the principles of triboelectric effect and electrostatic induction. A triboelectric nanogenerator (TENG) can be used to harvest many forms of energy from the environment which is generally wasted. It has a very simple working mechanism and easy design and can be used to power many small wearable electronics. Many properties of the TENG make it capable of producing large power, and to be used in future for large power generation. 1. Introduction Energy is one of the most important needs of the society, with the time day by day non-renewable resources such as fossil fuels are getting depleted which is a serious issue with respect to the environmental conditions. The threat of energy scarcity and environmental pollution is increasing day by day, it is necessary to develop new and highly efficient technologies for harvesting energy from the environment and to be used for the welfare of the society. Many forms of different mechanical energy resources are present in our surroundings such as human walking energy, water flow energy, wind energy etc. which are getting wasted and can be efficiently converted into electrical energy to drive various practical and functional devices. Triboelectric Nanogenerators (TENGs) are a new source of energy harvesting technology, having high efficiency, easy working mechanism and capable of harvesting Energy from different sources under different conditions. TENG has been invented as a new source of energy harvesting device which basically works on the principle of triboelectric effect and electrostatic effect [1]. The TENG follows a mechanism in which, two different triboelectric materials (having opposite polarities) come in contact and then separated or slid against each other. Electron transfer takes place between the materials and electrostatic charges of opposite polarities are developed on the surfaces of the triboelectric materials. Basically, there are two main motions that can be used in a TENG to convert the energy i.e. sliding motion and vertical contact-separation motion. In sliding type TENG rotating and freestanding designs are generally used, whereas in vertical contact separation generally, pressure and vibrations are converted into electricity [2]. The lifespan of vertical contact separation TENG is generally longer than sliding type due to lesser friction damage [3]. In the recent years, many different mechanisms have been developed for the extraction of energy from the environment using TENGs. A number of researches have been carried out to produce portable TENG to run different small-sized portable electronic devices. Present work is an overview Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Published under licence by IOP Publishing Ltd 1PDF Image | Critical Review on Triboelectric Nanogenerator
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