铝基复合材料制氢性能与安全性研究

Study on the Performance and Safety of Aluminum Matrix Composite for Hydrogen Production

铝水解制氢技术具有储氢密度高、安全、产物环境友好等优势,成为最具竞争力的制氢技术之一,能满足特种场景下燃料电池的供氢需求。本文中通过高能球磨工艺制备了铝基复合材料85%Al-9%LiAlH4-3%Bi-3%NaCl,研究其在不同场景下的制氢性能和特种环境下的安全性,并通过设计、制造铝水反应制氢装置实现了氢气流量的稳定供应。结果表明,在50℃温度下,铝基复合材料最大产氢量可达1 435 mL/g,火烧实验中能保持良好的阻燃效果,所设计的铝水反应制氢装置可实现氢气0.8 L/min流量的稳定供应,可满足低功率燃料电池的使用要求。

The technology of aluminum water electrolysis for hydrogen production has the advantages of high hydrogen storage density,safe and environmentally friendly,becoming one of the hydrogen production technologies with high compatibility and being able to meet the needs of hydrogen supply of fuel cell in special scenes. It is described in this paper that the aluminum matrix composite of 85%Al-9%LiAlH4-3%Bi-3%NaCl is produced with high-energy ball milling process,the hydrogen production performance in different scenes and its safety under special environment are studied,and the stable supply of hydrogen flow is achieved through the design and production of the device of aluminum-water reaction for producing hydrogen. The results show that at a temperature of 50oC,the maximum hydrogen output of aluminum matrix composite,which has a good fire resistance property shown by burning experiment,reaches 1,435 mL/g,and the device designed for aluminum-water reaction can fulfill a stable hydrogen supply with a flow rate of 0.8 L/min,meeting the operation demand of low-power fuel cell.