Safe and effective methods for hydrogen storage are still required to expand its usage as an energy carrier. One approach to contribute to solving this issue is to develop a polymer-based composite. In this study, an acrylonitrile-EPDM(ethylene/propylene/diene)-styrene (AES) composite containing nanostructured LaNi₅ was produced by wet ball milling (WM) for hydrogen storage, aiming operation at room temperature. The samples were processed as a cylindrical filament for the analyses performed. Improved particle dispersion was obtained for WM-AES/LaNi₅, which correlates with increasing the hydrogen sorption capacity. The polymer was able to maintain the specimen integrity after 20 hydriding cycles, avoiding the LaNi₅ pulverization and the reduction of LaNi₅ crystallite size. The crystallite size was in the nanoscale, reaching nearly 8 nm for WM-AES/LaNi₅. Fewer cycles were required to stabilize the hydrogen capacity for the composites. The samples were exposed to ambient air for up to 17 h, and their absorption kinetics were evaluated. The time required to reach 80% of hydrogen capacity after being exposed for 17 h increased 16.7x and 2.5x for ball-milled LaNi₅ and WM-AES/LaNi₅, respectively. Therefore, it is shown that the polymer reduces the effects of air exposure on its absorption kinetics. This study shows a promising method to produce a moldable polymer composite for hydrogen storage operational at room temperature.

为了扩大其作为能量载体的用途，仍然需要安全有效的储氢方法。有助于解决该问题的一种方法是开发基于聚合物的复合材料。在这项研究中，旨在通过在室温下操作，通过湿式球磨（WM）生产包含纳米结构LaNi ₅的丙烯腈-EPDM（乙烯/丙烯/二烯）-苯乙烯（AES）复合材料。将样品加工为圆柱形细丝以进行分析。WM-AES / LaNi _5的颗粒分散性得到了改善，这与氢吸附能力的提高有关。该聚合物能够在20个氢化循环后保持样品完整性，避免了LaNi _5的粉碎和LaNi的还原₅微晶尺寸。微晶尺寸为纳米级，对于WM-AES / LaNi ₅达到近8 nm 。需要较少的循环来稳定复合材料的氢容量。将样品暴露于环境空气中长​​达17小时，然后评估其吸收动力学。球磨LaNi ₅和WM-AES / LaNi ₅暴露17 h后达到氢容量的80％所需的时间分别增加了16.7倍和2.5倍。因此，表明该聚合物减少了空气暴露对其吸收动力学的影响。这项研究显示了一种有前途的方法来生产可塑的聚合物复合材料，用于在室温下储氢。