The effect of MgFe₂O₄ on the hydrogen storage properties of the composite Na₃AlH₆4LiBH₄ was studied for the first time, where it was found that MgFe₂O₄ addition decreased the onset desorption temperature of Na₃AlH₆4LiBH₄. Hydrogen (∼9.5 wt%) was released in three stages and the dehydrogenation temperatures were reduced to 80 °C, 350 °C, and 430 °C for the first, second, and third stage, respectively. The absorption kinetics of Na₃AlH₆4LiBH₄ was also significantly improved due to the catalytic effect of MgFe₂O₄. Using Kissinger analysis, the apparent activation energies of decomposition of the Li₃AlH₆ and NaBH₄ stages in Na₃AlH₆4LiBH₄-10 wt% MgFe₂O₄ were calculated to be 72 and 141 kJ/mol, respectively. These values were considerably lower than the corresponding values for the undoped composite. X-ray diffraction analysis revealed the formation of new products such as MgO and Fe during the heating process. Our results suggest that MgFe₂O₄ enhanced the hydrogen storage properties of Na₃AlH₆4LiBH₄ through the formation of active species, such as MgO and Fe.

首次研究了MgFe ₂ O ₄对复合Na ₃ AlH ₆ 4LiBH ₄的储氢性能的影响，发现添加MgFe ₂ O ₄降低了Na ₃ AlH ₆ 4LiBH ₄的起始解吸温度。。氢气（〜9.5 wt％）分三个阶段释放，第一阶段，第二阶段和第三阶段的脱氢温度分别降至80°C，350°C和430°C。Na ₃ AlH ₆ 4LiBH ₄的吸收动力学MgFe ₂ O ₄的催化作用也明显改善了铁的含量。使用基辛格分析，计算出Na ₃ AlH ₆ 4LiBH ₄ -10 wt％MgFe ₂ O ₄中Li ₃ AlH ₆和NaBH ₄分解的表观活化能分别为72和141 kJ / mol。这些值大大低于未掺杂复合材料的相应值。X射线衍射分析表明在加热过程中形成了新产品，例如MgO和Fe。我们的结果表明，MgFe ₂ O ₄通过形成活性物质（例如MgO和Fe）增强了Na ₃ AlH ₆ 4LiBH ₄的储氢性能。