Abstract:Magnesium hydroxide crystals were prepared by electrochemical deposition using magnesium chloride solution as electrolyte. The effects of current density, magnesium chloride concentration and deposition time on the growth rate, crystallinity, morphology and pore size distribution of the deposited product were investigated. The results show that each factor does not affect the phase composition of the deposited product(Mg(OH)2). The increase of current density accelerates the growth rate of Mg(OH)2, but at the same time reduces the crystallinity of Mg(OH)2 crystal, increases the porosity and macropore volume of deposition products. The MgCl2 concentration has little effect on the crystallinity and crystal particle size of Mg(OH)2, and the optimal MgCl2 concentration is present to maximize the deposition rate. The mass of Mg(OH)2 increases linearly with time, and the growth rate remains basically constant.