机械合金化制备Zn(BH_4)_2及其表征  

Mechanical Alloying Synthesis and Characterization of Zinc Borohydride

作　　者：杨宝刚[1] 李松林[1] 向锦涛[1,2] 羊求民[1] 

机构地区：[1]中南大学粉末冶金国家重点实验室,长沙410083 [2]湖南大学化学化工学院,长沙410082

出　　处：《材料导报（纳米与新材料专辑）》2012年第1期205-207,共3页

基　　金：湖南省自然科学基金重点项目(10JJ2037)

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℃.

关 键 词：燃料电池 储氢材料 机械合金化 硼氢化物 

分 类 号：O657.37[理学—分析化学]