Fan Yanping, Chen Dandan, Yuan Zhenluo, Chen Qiang, Fan Guangxin, Zhao Dan, Liu Baozhong
College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo, China.
School of Materials Science & Engineering, Henan Polytechnic University, Jiaozuo, China.
Front Chem. 2020 Feb 4;8:45. doi: 10.3389/fchem.2020.00045. eCollection 2020.
Flexible, water-resistant, and air-stable hydrogen storage material (named PMMA-LiBH/GMF), consisting of LiBH nanoparticles confined by poly (methylmethacrylate) (PMMA) and reduced graphene oxide (rGO) modified melamine foam (GMF), were prepared by a facile method. PMMA-LiBH/GMF can recover original shape after compression at the strain of 50% and exhibits highly hydrophobic property (water contact angle of 123°). Owing to the highly hydrophobic property and protection of PMMA, PMMA-LiBH/GMF demonstrates outstanding water-resistance and air-stability. Significantly, the onset dehydrogenation temperature of PMMA-LiBH/GMF at first step is reduced to 94°C, which is 149°C less than that of LiBH/GMF, and the PMMA-LiBH/GMF desorbs 2.9 wt% hydrogen within 25 min at 250°C, which is obviously more than the dehydrogenation amount of LiBH/GMF under the same conditions. It's our belief that the flexible, water-resistant and air-stable PMMA-LiBH/GMF with a simple preparation route will provide a new avenue to the research of hydrogen storage materials.
通过一种简便的方法制备了一种柔性、防水且空气稳定的储氢材料（命名为PMMA-LiBH/GMF），它由被聚甲基丙烯酸甲酯（PMMA）限制的LiBH纳米颗粒和还原氧化石墨烯（rGO）修饰的三聚氰胺泡沫（GMF）组成。PMMA-LiBH/GMF在50%应变压缩后可恢复原始形状，并表现出高度疏水性（水接触角为123°）。由于高度疏水性和PMMA的保护，PMMA-LiBH/GMF表现出出色的防水性和空气稳定性。值得注意的是，PMMA-LiBH/GMF第一步的起始脱氢温度降至94°C，比LiBH/GMF低149°C，并且PMMA-LiBH/GMF在250°C下25分钟内解吸2.9 wt%的氢，这明显多于相同条件下LiBH/GMF的脱氢量。我们相信，具有简单制备路线的柔性、防水且空气稳定的PMMA-LiBH/GMF将为储氢材料的研究提供一条新途径。
