Study Of A New Type Aluminium-Water Hydrogen Generator System

In this paper, a new type of aluminium-water hydrogen generator system is fabricated. This system is mainly composed of aluminum alloy anodes, hydrogen-evolution electrodes, neutral electrolyte, reactor, electrolyte storage tank, deposition collector, electrolyte recycling system and the hydrogen flux controlling system. The system is characterized by its capability of producing high purest hydrogen at the same time of electricity output. The reacting process only coat aluminum alloy anodes and water, and the byproduct is Al(OH)3 which becomes alumina after recycle and dehydration. Therefore, this system is totally new conceptional environmental energy storage and discharge system with high efficiency, clearness safety and low cost.In this design, we use the way of the electrolyte flow in through the bottom of reactor and overfall at the top of reactor to discharge the deposition at the process of reaction. Thus, we successfully solve the problem of the flocculation and deposition of Al(OH)3 in the reactor. As to the recycle of Al(OH)3 , electrolyte storage tank with funnelform bottom is adopted to enrich Al(OH)3 deposition in the deposition collector which is under the storage tank. and discharge the Al(OH)3 deposition timely and conveniently. In this case, it is possible for the aluminium-water hydrogen storages battery to work at high-power with long life. At the same time, the effect of heat treatment on the electrochemical properties of aluminium alloy electrodes is studied. In the experiment, the quenching and anneal are used to modify the aluminium alloy anodes. The result show that under the solution treatment, the crystal boundary of aluminium alloy enter the aluminium crystal lattice and decrease the content of the second phase between crystal boundary when the aluminium alloy is heated at high temperature. After those treatments the electrochemical activation is improved and the chemical corrosion is decreased.