Pan Qiuyang, Shen Hao, Han Xingbo, Zhu Jianhui, Li Zhilin, Pan Taijun, Xu Linhua, Lv Lijun
Shanghai Institute of Applied Physics, Chinese Academy of Sciences Shanghai 201800 China
School of Materials Science and Engineering, Changzhou University Changzhou 213164 China.
RSC Adv. 2025 May 22;15(22):17153-17163. doi: 10.1039/d5ra00542f. eCollection 2025 May 21.
The effects of non-stoichiometric Mn and Cr on the hydrogen storage properties of Ti-Mn-based TiZrMn CrFe ( = 0, 0.1, 0.2) and TiZrMnCr Fe ( = 0, 0.1, 0.2, 0.3) alloys were investigated. The alloys were synthesized by arc melting and crystallized in a single C14-type Laves phase structure. With increasing Mn and Cr content, the equilibrium plateau pressures of the alloys during hydrogen absorption/desorption increased markedly, while the plateaus became flatter and the maximum hydrogen absorption capacities showed a slight decrease. Lower Mn/Cr ratios contribute to reduced hysteresis and lower plateau pressures. However, this improvement is associated with a decline in hydrogen storage capacity. The cyclic performance of the TiZrMnCrFe alloy, which exhibited excellent hydrogen storage properties, was studied. It was found that the capacity retention rate reached 96.2% after 500 hydrogenation-dehydrogenation cycles.
研究了非化学计量比的Mn和Cr对Ti-Mn基TiZrMnCrFe（x = 0, 0.1, 0.2）和TiZrMnCrFe（y = 0, 0.1, 0.2, 0.3）合金储氢性能的影响。这些合金通过电弧熔炼合成，并结晶为单一的C14型Laves相结构。随着Mn和Cr含量的增加，合金在吸氢/解吸过程中的平衡平台压力显著增加，而平台变得更平坦，最大吸氢容量略有下降。较低的Mn/Cr比有助于降低滞后现象和降低平台压力。然而，这种改善与储氢容量的下降有关。研究了具有优异储氢性能的TiZrMnCrFe合金的循环性能。结果发现，在500次加氢-脱氢循环后，容量保持率达到96.2%。
