近期，我院教师本科生汤德钰（第一作者）、郑家广（通讯作者）等的研究成果“Achieving solid-state room temperature dehydrogenation from sodium borohydride composited with glycolic acid”在《Journal of Alloys and Compounds》（IF=5.8）上发表。

近期，我院教师本科生汤德钰（第一作者）、郑家广（通讯作者）等的研究成果“Achieving solid-state room temperature dehydrogenation from sodium borohydride composited with glycolic acid”在《Journal of Alloys and Compounds》（IF=5.8）上发表。

论文简介如下：

硼氢化钠（NaBH₄）长期以来一直被认为是一种经济的储氢材料，理论储氢容量为10.6 wt%。然而，其实际应用受到热力学稳定性的阻碍，传统的NaBH₄制氢需要过量的水，这降低了其体积和质量容量。在这项研究中，首次使用固态乙醇酸（GA）来失稳NaBH₄以生产氢气。结果表明，NaBH₄-GA从室温开始迅速释放氢气，在100℃以下产生超过3.6 wt%的氢气，氢气的有效利用率为95%。此外，NaBH₄-GA复合材料在整个脱氢过程中保持固态，体积容量超过39 gH₂ L^-1。通过对NaBH₄-GA复合材料键合结构和组成的演变的研究，进一步证实脱氢过程与NaBH₄的水解过程相似，但没有出现液体。这种化学过程“固态水解”可能为使用NaBH₄进行低温固态储氢提供潜在的应用和新的见解。

Sodium borohydride (NaBH₄) has long been regarded as a cost-effective hydrogen storage material with a theoretical hydrogen storage capacity of 10.6 wt%. However, its practical application is hindered by thermodynamic stability, and traditional hydrogen production from NaBH₄ required excess water, which lowered its volumetric and gravimetric capacities. In this study, for the first time, solid-state glycolic acid (GA) was used to destabilize NaBH₄ for producing hydrogen. According to the results, NaBH₄-GA started releasing hydrogen rapidly from room temperature and more than 3.6 wt% hydrogen was produced below 100 ℃ with efficient hydrogen utilization rate of 95%. Moreover, NaBH₄-GA composites maintained solid-state through the entire dehydrogenation process with high volumetric capacity above 39 g H₂ L^-1. Through the evolution of bonding structures and composition in NaBH₄-GA composites, the dehydrogenation process was further confirmed as similar to the hydrolysis process of NaBH₄, but with no liquid appearing. This chemical process “solid-state hydrolysis” may offer potential application and novel insights in low-temperature solid-state hydrogen storage using NaBH₄.