scholarly journals Fully transient stretchable fruit‐based battery as safe and environmentally friendly power source for wearable electronics

EcoMat ◽  
2021 ◽  
Vol 3 (1) ◽  
Author(s):  
Zifeng Wang ◽  
Xue Li ◽  
Zijie Yang ◽  
Hongchen Guo ◽  
Yu Jun Tan ◽  
...  

2021 ◽  
Vol 13 (8) ◽  
pp. 4404
Author(s):  
Ji Whan Kim ◽  
Yoon Kyung Kim

This study estimated the induced effects of LNG, mega PV (photovoltaic), small PV, onshore wind and offshore wind power, which will be used as major power sources under the Korea’s energy transition policy. The 2015 Input–Output Statistics of Bank of Korea were used to reflect Korea’s economic structure. The MCI (manufacture, construction and installation) and O&M (operation and maintenance) of each power source would have different effects, so in the analysis the MCI and O&M of each power source were distinguished. According to estimation results, the induced-effect coefficients of the MCI are greater than those of the O&M in every power source. The induced production effect coefficient of the MCI is decreased in the order of mega PV > small PV > LNG power > offshore wind > onshore wind. The induced production effect coefficient of the O&M is decreased in the order of mega PV > small PV > onshore wind > offshore wind > LNG thermal. The induced employment coefficient of the MCI is decreased in the order of LNG thermal > mega PV > small PV > onshore wind > offshore wind. PV power and wind power have bigger induced effects and bring economic effects in Korean economy. The carbon neutrality and energy transition policies implemented by Korea have a certain level of induced effects and offset the burden of transition costs even if existing power sources are replaced with environmentally friendly power sources.





2017 ◽  
Vol 29 (42) ◽  
Author(s):  
Xiaotian Hu ◽  
Zengqi Huang ◽  
Xue Zhou ◽  
Pengwei Li ◽  
Yang Wang ◽  
...  


2017 ◽  
Vol 5 (7) ◽  
pp. 1810-1815 ◽  
Author(s):  
Arunkumar Chandrasekhar ◽  
Nagamalleswara Rao Alluri ◽  
Balasubramaniam Saravanakumar ◽  
Sophia Selvarajan ◽  
Sang-Jae Kim

Scavenging of ambient dissipated mechanical energy addresses the limitations of conventional batteries by providing an auxiliary voltaic power source, and thus has significant potential for self-powered and wearable electronics.



2019 ◽  
Vol 2019 ◽  
pp. 1-13 ◽  
Author(s):  
Anna Dąbrowska ◽  
Agnieszka Greszta

The purpose of this study is to analyze the state-of-art knowledge of the use of energy harvesters (EHs) to power the wearables of clothing. The study discusses some examples of clothing with incorporated different types of EHs, harvesting energy from body movement (based on piezoelectric, electromagnetic, and electrostatic phenomena) from temperature differences, as well as from solar radiation. In the performed analysis, particular attention was focused on the design of EHs, their principle of operation, advantages, disadvantages, and restrictions on use. Low energy requirements of wearable electronics (e.g., sensors and diodes) implemented to clothing indicate the possibility of using miniaturized EHs as a power source for such elements. Each of the discussed EH has both disadvantages and advantages. Therefore, the selection of EH should be preceded by a detailed analysis of the conditions of the garment use, its destination, the user’s physical activity, and the energy needs of the electronic devices incorporated in clothing. Despite a variety of research studies aimed at developing new EH, relatively few of them concern their implementation in the structure of clothing and tests of their functionality in the foreseeable conditions of use. In view of the above, these issues have been addressed in this publication based on the available literature.



Author(s):  
P.Srinivas Reddy

This project is an attempt to highlight the various possibilities of acquiring an environmentally friendly and efficient power source. The use of high pressure, expanding gas, to power the engine piston is the fundamental process in the function of all engines with reciprocating pistons. In this project we have used highly pressurized gas to cause reciprocation of the piston and thereby produce power. This gas is introduced into the engine cylinder at the Top Dead Center position of the piston through a timing valve, thereby giving the gas the maximum capacity to impart its force on the piston. The emission from this process is nil and 100% environmentally friendly. We have shown that with the smallest of changes in our existing engine design we can incorporate this technology in our present modes of transportation. The simple yet dramatic change brought by this system is according to us the most significant aspect of our invention. We have shown a positive way of implementing this technology and as always with any system; this has tremendous potential for improvement and perfection



2020 ◽  
Vol 10 (12) ◽  
pp. 2070056
Author(s):  
Muhammad Toyabur Rahman ◽  
SM Sohel Rana ◽  
Md Salauddin ◽  
Pukar Maharjan ◽  
Trilochan Bhatta ◽  
...  


2020 ◽  
Vol 10 (12) ◽  
pp. 1903663 ◽  
Author(s):  
Muhammad Toyabur Rahman ◽  
SM Sohel Rana ◽  
Md Salauddin ◽  
Pukar Maharjan ◽  
Trilochan Bhatta ◽  
...  


2018 ◽  
Vol 7 (3.12) ◽  
pp. 703
Author(s):  
R Rajesh ◽  
A Mutharasan

Regarding development in the request and utilization of vitality. India is developing exponentially. With the request of spotless and environmentally friendly power vitality, it is important to tackle the tremendous potential from the sustainable power source part. With the GOI strategy and rules, around nine level of the aggregate introduced limit originates from the inexhaustible sources. With the expanded to the framework and observed to keep up the recurrence and members in the age administration framework. Given the vulnerability and inconstancy in the yield of generator, it is a noteworthy test to keep up the matrix with this vacillation. Under this viewpoint, this paper underscores the technique to address the difficulties in incorporating the power from sustainable power sources. Quantum of wind vitality is corresponded with the breeze speed and heading, shrewd estimate motor is embraced to lessen the uncertainly. 



2019 ◽  
Vol 19 (11) ◽  
pp. 7369-7373 ◽  
Author(s):  
Jintang Lin

Ultraviolet (UV) detectors have a wide range of commercial applications. However, most UV light detectors require an external power source, which limits their applications as portable and/or wearable electronics. In this work, a self-powered UV detector based on triboelectric nanogenerator (TENG) technology is demonstrated. Nano-ripple zinc oxide (ZnO) film acting as both UV-sensitive and triboelectric material was synthesized by a simple sol–gel method. The self-powered UV sensor detected UV irradiation without an external power source. The open-circuit voltage of the device under UV irradiation was 130 V, which was 2.3 times higher than the output of the device in the dark. Possible operating mechanisms of the device, which is based on the contact electrification process, are described.



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