Hydropower generation by transpiration from microporous alumina

Abstract Traditional hydropower generation is one of the most sustainable energy sources; however, the local environmental impact of hydroelectric dams and reservoirs is serious, and hydroelectric power requires high-cost turbines and generators. Because these installations utilize gravitational pot...

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Autores principales:	Manpreet Kaur, Satoshi Ishii, Ryusuke Nozaki, Tadaaki Nagao
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/e0f7a7d3ff954903826a4d22f549387c
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spelling	oai:doaj.org-article:e0f7a7d3ff954903826a4d22f549387c2021-12-02T15:49:43ZHydropower generation by transpiration from microporous alumina10.1038/s41598-021-90374-52045-2322https://doaj.org/article/e0f7a7d3ff954903826a4d22f549387c2021-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-90374-5https://doaj.org/toc/2045-2322Abstract Traditional hydropower generation is one of the most sustainable energy sources; however, the local environmental impact of hydroelectric dams and reservoirs is serious, and hydroelectric power requires high-cost turbines and generators. Because these installations utilize gravitational potential energy of massive volumes of falling water, this sort of hydropower generation is unsuitable for ubiquitous, small-scale energy production. Here, we report that wetting and evaporation of pure water from a tiny block of porous alumina generates electrical current in the direction of water transpiration. The current induced in microporous alumina is associated with mass transport of water accompanying ions that accumulate near the negatively charged surface of alumina pores. Without any pre-treatment or additives, once evaporation commences, a 3 × 3 cm2 piece of alumina can generate an open-circuit voltage as large as 0.27 V. The power generation scheme we propose here is simple, clean, and versatile, and it can be employed anywhere, as it utilizes only spontaneous capillary action of water and Coulombic interaction at the alumina-water interface, without requiring any input of heat or light.Manpreet KaurSatoshi IshiiRyusuke NozakiTadaaki NagaoNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Manpreet Kaur Satoshi Ishii Ryusuke Nozaki Tadaaki Nagao Hydropower generation by transpiration from microporous alumina
description	Abstract Traditional hydropower generation is one of the most sustainable energy sources; however, the local environmental impact of hydroelectric dams and reservoirs is serious, and hydroelectric power requires high-cost turbines and generators. Because these installations utilize gravitational potential energy of massive volumes of falling water, this sort of hydropower generation is unsuitable for ubiquitous, small-scale energy production. Here, we report that wetting and evaporation of pure water from a tiny block of porous alumina generates electrical current in the direction of water transpiration. The current induced in microporous alumina is associated with mass transport of water accompanying ions that accumulate near the negatively charged surface of alumina pores. Without any pre-treatment or additives, once evaporation commences, a 3 × 3 cm2 piece of alumina can generate an open-circuit voltage as large as 0.27 V. The power generation scheme we propose here is simple, clean, and versatile, and it can be employed anywhere, as it utilizes only spontaneous capillary action of water and Coulombic interaction at the alumina-water interface, without requiring any input of heat or light.
format	article
author	Manpreet Kaur Satoshi Ishii Ryusuke Nozaki Tadaaki Nagao
author_facet	Manpreet Kaur Satoshi Ishii Ryusuke Nozaki Tadaaki Nagao
author_sort	Manpreet Kaur
title	Hydropower generation by transpiration from microporous alumina
title_short	Hydropower generation by transpiration from microporous alumina
title_full	Hydropower generation by transpiration from microporous alumina
title_fullStr	Hydropower generation by transpiration from microporous alumina
title_full_unstemmed	Hydropower generation by transpiration from microporous alumina
title_sort	hydropower generation by transpiration from microporous alumina
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/e0f7a7d3ff954903826a4d22f549387c
work_keys_str_mv	AT manpreetkaur hydropowergenerationbytranspirationfrommicroporousalumina AT satoshiishii hydropowergenerationbytranspirationfrommicroporousalumina AT ryusukenozaki hydropowergenerationbytranspirationfrommicroporousalumina AT tadaakinagao hydropowergenerationbytranspirationfrommicroporousalumina
_version_	1718385722655768576

Hydropower generation by transpiration from microporous alumina

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