Lightweight Portable and High Thermal Conductivity Storage/Release Hydrogen Bottle

Abstract

In order to solve the problem of hydrogen storage and transportation, the first thought is to store the hydrogen directly in the cylinder. However, this approach is not advisable, because even under the high pressure of 700 atm, the weight of hydrogen in the cylinder is less than the cylinder itself 1% of it, and it is very unsafe. Once it leaks, it will explode when it encounters sparks. In this study, we designed a lightweight hydrogen storage/release bottle. The hydrogen storage bottle is made of aluminum alloy. This hydrogen storage alloy in the hydrogen storage/release bottle is used to adsorb hydrogen, and the gas valve of the bottle is used to release hydrogen. In order to achieve the purpose of light weight, this portable hydrogen storage bottle was made of 7075 aluminum alloy. After the bottle body is hollowed out by machining, an integrally formed hydrogen storage bottle body is formed. The aluminum gasket is fixed to the flange structure, so the overall hydrogen storage bottle has no welded part. Further, a hard anodic films were formed on the bottle inner an d outer surfaces to increase the tensile stress of the bottle, prevent hydrogen embrittlement in the bottle, and anti-corrosion on the bottle. The design of this hydrogen storage tank includes the following features: (1) the lightweight portable storage/desorption of aluminum alloy bottle, (2) The outer layer of the bottle body is covered with an anodic film to strengthen bottle tension, (3) The outside of the bottle with a high quality anodic film, and (4) the inside of the bottle is anodized to prevent hydrogen embrittlement.