Leveraging the world-class technology in regulating the atomic and molecular arrangements and combining photovoltaic power generation, hydrogen manufacturing that uses light to break down water, and fuel cell that uses hydrogen and light, we aim to build an energy system that departs completely from the use of fossil fuels.
The station utilizes an offsite supply system of transporting liquefied hydrogen by tank trucks from the Hydro Edge liquefied hydrogen production plant of Iwatani in Sakai, Osaka. Please note that an LPG station is also provided next to the hydrogen refueling station.
Combined with electrolysis equipment, the costs for which are falling due to technological advancements and mass production, these developments may reduce hydrogen production costs below Japan's Ministry of Economy, Trade, and Industry's target of up to 20 yen per cubic normal meter(Nm3)5.
However due to changes in the operating temperature of the concentrator photovoltaic cells caused by outside air temperature and sunlight, as well as changes in the strength of sunlight due to factors such as clouds, it was difficult to maintain high hydrogen production efficiency throughout the day.
With permission from Smart Japan, a news site providing the latest information on electricity conservation, storage and generation, we have translated here an article on the results of research on hydrogen production using visible light, originally published on June 1, 2017.
Funded through the DOE's Office of Energy Efficiency and Renewable Energy(EERE), with contribution from DOE's Office of Nuclear Energy, the selected projects will advance hydrogen storage and infrastructure technologies and identify innovative concepts for hydrogen production and utilization including grid resiliency.
Oil companies are mass-producing hydrogen from oil such as naphtha in order to remove sulfur and other impurities from oil during the oil refining process. As one of these companies, Nippon Oil Corporation has long been accumulating expertise for hydrogen production.
To address this challenge, Hitachi Zosen and Daiki Ataka will seek to reduce the costs of power conversion and electrolysis, which comprise the majority of hydrogen production costs, and moreover review the process of hydrogen production, establish a new, dramatically improved process, and assess the energy and economic efficiency of that process as well as identify its issues and confirm the development target.
In previous catalytic reaction methods used to decompose ammonia, you needed to heat ammonia to a high temperature of 400 to 800°C, and the catalyst also used expensive precious metals, which was bad for energy efficiency and very costly, but the"ambient temperature, non catalytic hydrogen manufacturing method" that we developed was a revolutionary method that solved these sort of problems.
Using this property, it is possible to separate out just hydrogen from mixed gases through a palladium metal membrane. Being able to create high purity hydrogen like this, as the smallest possible atomic sieve, palladium is useful for producing hydrogenfor fuel cells and for generating ultrapure hydrogen required when manufacturing semiconductors and LEDs.
The existing ordinary method of producing hydrogen is a steam-reforming method, a method to produce hydrogen by inducing a reaction between steam and natural gas or coal. However, the method will lead to resource exhaustion and entails other environmental concerns; thus, there is demand for a new method to produce hydrogen using natural energy such as solar light.
SHIN-IDEMITSU Co., a major Japanese oil distributor with marketing name IDEX, announced on June 2, 2010, that it had officially signed an agreement with Omuta City, Fukuoka Prefecture, in western Japan to construct a plant in Omuta Eco-Town that will produce hydrogen from biomass. This contract followed the decision of the Ministry of Agriculture, Forestry and Fisheries to grant a subsidy to the world's first commercial plant project to produce hydrogen from wood biomass through gasification.
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