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Study of cyclic performance of V-Ti-Cr alloys employed for hydrogen compressor
International Journal of Hydrogen Energy ( IF 7.2 ) Pub Date : 2018-01-12 , DOI: 10.1016/j.ijhydene.2017.12.159
Suganthamalar Selvaraj , Ankur Jain , Sanjay Kumar , Tengfei Zhang , Shigehito Isobe , Hiroki Miyaoka , Yoshitsugu Kojima , Takayuki Ichikawa

The development of a suitable hydrogen compressor plays one of the key roles to realize the fuel cell vehicle as well as for many other stationary and mobile applications of hydrogen. V-Ti-Cr BCC alloys are considered as promising candidates for effective hydrogen storage. The cyclic durability of hydrogen absorption and desorption is very important for these alloys to be realized as practical options. In connection to this, two alloys of V-Ti-Cr, (1) V40Ti21.5Cr38.5 and (2) V20Ti32Cr48, were selected and their cyclic hydrogen absorption-desorption performance was evaluated up to 100 cycles for temperature and pressure ranges of 20–300 °C and 5–20 MPa, respectively. It has been found that the cyclic hydrogen storage capacity continuously decreased for one composition while it was stable after 10 cycles for another composition. This performance difference of the alloys was studied in terms of their structural and microscopic properties and the results are presented in this paper.



中文翻译:

氢压缩机用V-Ti-Cr合金的循环性能研究

合适的氢气压缩机的开发在实现燃料电池汽车以及氢的许多其他固定和移动应用中扮演着关键角色之一。V-Ti-Cr BCC合金被认为是有效储氢的有前途的候选材料。氢吸收和解吸的循环耐久性对于将这些合金实现为实用选项非常重要。与此相关的是两种V-Ti-Cr合金,(1)V 40 Ti 21.5 Cr 38.5和(2)V 20 Ti 32 Cr 48选择,并分别在温度范围为20-300°C和压力范围为5-20 MPa的情况下,对它们的循环氢吸收-解吸性能进行了100个循环的评估。已经发现,对于一种组合物,循环氢存储容量连续降低,而对于另一种组合物,在十个循环后其稳定。从合金的结构和微观性能方面研究了这种性能差异,并在本文中给出了结果。

更新日期:2018-01-12
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