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镁基储氢材料的理论储氢容量高(7.6wt%H2),被认为是最具应用前景的储氢材之一。为发展电网氢储能用储氢材料以解决可再生能源发电的随机性和间歇性对电网产生的冲击,采用乙炔等离子体法制备Mg_(50)Al_(50)/C纳米颗粒,重点研究碳层及Al催化剂的引入对于Mg纳米颗粒尺寸及其储氢性能的影响。研究表明,乙炔等离子体法制备的Mg纳米颗粒尺寸主要分布在30~40 nm处,平均颗粒尺寸只有33 nm,同时添加的碳及Al催化剂抑制了颗粒表面的氧化,使吸放氢动力学明显提高。
The theoretical hydrogen storage capacity of Mg-based hydrogen storage materials (7.6wt% H2) is considered as one of the most promising hydrogen storage materials. In order to develop hydrogen storage materials for hydrogen storage in power grids to solve the randomness and intermittent impact on the grid caused by renewable energy, Mg 50 Al 50 / C nanoparticles were prepared by acetylene plasma. Layer and Al catalyst on the size of Mg nanoparticles and their hydrogen storage properties. The results show that the size of Mg nanoparticles prepared by acetylene plasma is mainly distributed in the range of 30-40 nm and the average particle size is only 33 nm. At the same time, the addition of carbon and Al catalyst inhibits the oxidation of the particles surface and makes the hydrogen absorption and desorption kinetics obvious improve.