The hydrogen storage properties of MgH2-Fe3S4 composites
The hydrogen storage properties of MgH2-Fe3S4 composites
复制标题
MgH2-Fe3S4复合材料的储氢性能
DOI：
10.1016/j.energy.2015.09.080
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发表时间：
2015
期刊：
影响因子：
9
通讯作者：
Han Shumin
中科院分区：
文献类型：
--
作者：
Zhang Wei;Cheng Ying;Han Da;Han Shumin
本文报道了一种合成具有一系列优异储氢性能的MgH_2-Fe_3S_4复合材料的方法。例如，与纯MgH 2相比，三倍高的氢吸收重量（3.41重量%相对于0.98%）和两倍快的氢解吸速率（4.01重量%相对于2.32重量%）在MgH_2-Fe_3S_4复合材料中观察到了明显的裂纹。此外，MgH 2的脱氢温度也被发现降低了90 K的添加Fe 3S 4。通过研究MgH 2与Fe 3S 4在氢化/脱氢过程中的反应，发现新相（Fe和MgS）的形成及其配位作用对MgH 2储氢性能的改善有显著作用。
We report here a method of synthesizing MgH2–Fe3S4composite with a series of remarkable hydrogen storage properties. For instance, compared to pure MgH2, three times higher hydrogen absorption weight (3.41 wt.% vs 0.98%) and two times faster hydrogen desorption rate (4.01 wt.% vs 2.32 wt.%) are seen in MgH2–Fe3S4composite. Furthermore, the dehydrogenation temperature of MgH2is also found to be reduced by 90 K with the addition of Fe3S4. By studying the reactions between MgH2and Fe3S4during the hydrogenation/dehydrogenation process, we found the formation of new phases (Fe and MgS) as well as their coordination play a remarkable effect on improving the hydrogen storage properties of MgH2.