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Recycle Used Magnesium Fuel by Laser Mg Recycle Solar laser Laser refining of magnesium Applied Physics Letter 2006 Announcement The most poplar method for magnesium production today is the Pidgeon method. However, this method uses 10 kg of coal to produce 1 kg of magnesium. This does not allow magnesium to be an alternative energy source to coal. Professor Emeritus of Tokyo Institute of Technology Yabe proposed to convert natural energy into a laser for refining, achieving the same purity with much higher efficiency. Here's why the laser method is so good. Experiment to regenerate magnesium by laser Some people may think that using a laser for refining is too expensive. Actually, it is not expensive even at present. The price of semiconductor lasers will drop dramatically if they are mass-produced, so equipment costs will drop even more in the future.

新しいマグネシウム電池の製品を紹介 Product introduction

_cc781905-5c -bb3b-136bad5cf58d_ Applied Physics Letters (2007) Optics Letters (2012) Sunlight Laser is sintered through optical fiber and cuts the steeel. MgO is irradiated by sunlight laser (Refine experiment)

December, 2016

どのような環境問題が存在するかを指摘している Why is a Magnesium Recycling Society Necessary? Solar energy cannot be an alternative energy Many people often argue with the average value, but in the case of the sun, as shown below, the average value is 4 hours a day even if there is no sunshine for 4 days. However, it would be a problem without electricity for 4 days. You will need a storage battery to store these four days. This is a 10.8 billion kWh storage battery, which is not very feasible. Storage of hydrogen energy is a problem Hydrogen has a small volume density, and even at high pressure, it is nearly an order of magnitude smaller than gasoline as shown in the figure below. This is disadvantageous for transportation because the volume is an order of magnitude larger when transporting. As shown in the figure on the left below, with 700 atm of hydrogen, a weight of 7,000 tons is applied per 1 m square, making it impossible to make a large container. This also adds the weight of the container, which reduces the energy density per weight. To store it as liquid hydrogen, it needs to be cooled to -253 degrees Celsius, but the power is enormous. Therefore, it is necessary to refrigerate only with heat insulating material, but if the full tank contains hydrogen or if a small amount remains, the amount of heat to hydrogen per unit volume will increase, making it impossible to store for a long time. increase. For hydrogen storage alloys, etc., a method that does not use any energy for the storage and release of hydrogen has not been found at present . If hydrogen is extracted from hydrocarbons such as methane and methanol, CO2 will be emitted and it is meaningless. Energy currency I advocate the concept of energy currency . Until now, the energy currency has been fossil fuels. Is there a new currency that will create an energy cycle in the future? The annual consumption of fossil fuels is 10 billion tons, so if you don't always think about this, the discussion will be empty. We believe that this is the only equivalent of magnesium, which has 1800 trillion tons of resources. Mg power generation Mg regeneration EV Freshwater equipment Mobile charger Emergency battery

携帯電話のマグネシウム電池による充電の実施状況 Return to emergency battery 1.5 billion people around the world live in non-electrified areas We supply these people with electricity such as lighting and cell phone charging Supplying electricity in the event of a disaster in Japan Small LED

Magnesium Battery (Center) of 12V DC output is connected to Inverter (Right Bottom) which gives 100V AC output. This drives Television. Photo below shows demonstration of both television and light tube.

充電の必要のない電気自動車、燃料電池、円盤型自動燃料交換マグネシウム電池、 Mg power plant Electric vehicles need fuel cells Gasoline cars have spread around the world in the last 100 years because they run on fuel that can be refilled in minutes. The electric vehicle currently under consideration has the drawback of having to be recharged. Another issue is the material of the rechargeable battery. So is there a new fuel alternative to gasoline? Hydrogen fuel has fuel storage and transportation issues and is even more problematic than rechargeable batteries. Professor Emeritus of Tokyo Institute of Technology Yabe claims that magnesium plays that role. Moreover, if you get it from seawater, it will be cheaper than gasoline. 　　　 Charging problem An electric vehicle can run 600km with a 100kWh battery. However, in order to charge this battery in 1 minute, which is the same as the gasoline refueling time, 6 MW of electricity is required. Even if the peak of electricity used in one house is 10 kW, it is equivalent to 600 houses. With all charging stations using 6 MW each, the time variation of this power is tremendous . Some people say that if the battery is improved, it can be charged within 1 minute, but the problem of charging is not related to the performance of the battery and is a problem of power supply. A very large amount of power is required for a short charge . It is strange that no one says how to solve the momentary fluctuation of high power at charging stations here and there, let alone building the power infrastructure . 　　　 Battery replacement is not possible There is also the idea of replacing the battery . Since it takes a long time to charge, the idea is to keep a number of charged batteries and replace them. It sounds good, but if you imagine the situation in Japan, you can see that this is completely impossible. Looking at one gas station, there are times when dozens of cars are concentrated in an hour. Depending on the time, it may not come at all. But spare batteries need to accommodate this concentrated time zone. Even after that time, I don't know when the next wave will come, so I have to charge dozens of cars within an hour. This is the same as charging in a few minutes, so it still requires a huge amount of power. No battery material Is it in seawater? Some people say it's okay because seawater is rich in lithium. However, there are only 250 billion tons of lithium in the oceans of the world. In contrast, magnesium is 1800 trillion tons. To get 1 billion tons of lithium, we need 1/250 of the world's seawater. This is equivalent to seawater at a depth of 30m in the Pacific Ocean. Disc-type magnesium fuel cell controls EV Professor Emeritus of Tokyo Institute of Technology Yabe proposed a completely new fuel cell and obtained a patent. A disk-shaped battery like the one on the lower right is inserted into the battery part (black part) while rotating. After the reaction, it will leave the battery section. This will result in 10-20 battery reactions. The important thing is that you can stop the battery in the middle and just insert the fuel when you restart. In the height direction, multiple batteries are connected in series. For example, a battery with a diameter of 60 cm and a height of 50 cm will produce a battery with a diameter of 36 kWh and a weight of 26 kg. With a lithium-ion battery, a battery with this capacity weighs about 200 kg, making it possible to create a lightweight, high-output battery. Charging while driving with in-vehicle magnesium battery Yabe Magnesium batteries have an energy of 1.5kWh / kg. It means that 67kg of magnesium is required for 100kWh. If you charge the battery at 20kW for 5 hours while driving, the size of the battery will be 56cm x 72cm x 80cm, which is the size that fits in the trunk.

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非常用にどのようにマグネシウム電池が使用できるかの例を紹介 Contributing to a Magnesium Recycling Society magnesium battery For more information on mobile chargers 12V, 200W, 400Wh Right figure: When you finish using it, you can replace the fuel from the top and use it again. A 12V DC output magnesium battery (center) is converted to 100V AC using an inverter (lower right) to supply electricity to the TV. In the figure below, the lighting and the TV are operating at the same time. 12V, 150Wh