摘要
以NaBH4和ZnCl2为原料,利用机械合金化制备新型储氢材料Zn(BH4)2。采用X射线衍射(XRD)、红外光谱(FT-IR)和拉曼光谱(Raman spectra)、差示扫描量热-热重分析(DSC-TGA)等系统研究了Zn(BH4)2的微结构和热力学性能。XRD分析显示,球磨2h后产物为NaCl和Zn(BH4)2,且原料相消失;拉曼光谱和红外光谱结果均证实了Zn(BH4)2的生成;DSC-TGA测试显示Zn(BH4)2在30～150℃发生热分解,实际放氢量约为3.00%。
A new kind of hydrogen storage material, zinc horohydride, was synthesized by mechanical alloying via NaBH4 and ZnCl2. Its microstructures and thermodynamical properties were analyzed by XRD, FT IR, Raman spectra and DSC TGA. XRD measurement show that the major phase of the products was NaCl and Zn（BH4）2, alter- natively, the raw materials of NaBH4 or ZnCl2 disappeared. FT-IR and Raman spectra tests confirmed the existence of Zn（BH4）2 in the products; DSC and TGA measurements show that the hydrogen releasing amount was --3.00% at 30~150℃.
基金
湖南省自然科学基金重点项目(10JJ2037)
关键词
燃料电池
储氢材料
机械合金化
硼氢化物
fuel cells, hydrogen storage material, mechanical alloying, borohydride
