Hydrogen storage alloys for high-pressure suprapure hydrogen compressor

作者：Wang Xinhua^*; Chen Rugan; Zhang Yan; Chen Changpin; Wang Qidong

来源：Journal of Alloys and Compounds, 2006, 420(1-2): 322-325.

DOI：10.1016/j.jallcom.2005.11.001

• hydrogen storage alloy
• hydrogen compressor
• hydride
• ultrapure hydrogen

In this work, AB(5) type rare earth-based and AB(2) type TiCr2-based hydrogen storage alloys were studied for the purpose of high-pressure hydrogen compression. A pair of hydrogen storage alloys, Ml(0.55)Mm(0.2)Ca(0.25)M(5) (MI: La-rich mischmetal; Mm: Ce-rich mischmetal) and (Ti0.97Zr0.03)(1.1)Cr1.6Mn0.4, with favorable hydrogen storage properties was developed as the alloys for a double-stage high-pressure metal hydride hydrogen compressor (MHHC). With the developed alloy pair, we designed and built a MHHC prototype with hydrogen capacity of 100 L, which could produce high-pressure ultrapure hydrogen with pressure of 45 MPa and purity of 99.9999% from industrial grade hydrogen (98% purity) at pressure of around 2 MPa. During the compression procedure, only hot water is used as the heating source. The compression characteristics were studied and the thermal efficiency was calculated.

• 出版日期2006-8-31
• 单位浙江大学