Effect of Mo content on hydrogen storage properties and cyclic stability of BCC-type TiCrMo alloys

IF 9.2 2区工程技术 Q1 CHEMISTRY, PHYSICAL

International Journal of Hydrogen Energy Pub Date : 2026-07-20 Epub Date: 2026-06-26 DOI:10.1016/j.ijhydene.2026.156197

Hongmei Cai, Yakun Zhang, Yaying Cao, Di Wan, Yumeng Zhao, Yunfei Xue

{"title":"Effect of Mo content on hydrogen storage properties and cyclic stability of BCC-type TiCrMo alloys","authors":"Hongmei Cai, Yakun Zhang, Yaying Cao, Di Wan, Yumeng Zhao, Yunfei Xue","doi":"10.1016/j.ijhydene.2026.156197","DOIUrl":null,"url":null,"abstract":"<div><div>BCC-type Ti–Cr–Mo alloys are low-cost and promising alternatives to vanadium-based hydrogen storage alloys, but their insufficient cyclic stability severely limits practical applications. In this work, single-phase BCC Ti–Cr–Mo alloys with different Mo contents were fabricated by vacuum arc melting combined with water quenching. The results indicate that increasing Mo content significantly enhances the structural stability of the alloys. Synergistically regulated by lattice parameters and bulk modulus, the maximum hydrogen storage capacity decreases from 3.5 wt% to 3.09 wt%, while the capacity retention after 50 cycles increases from 74.6% to 88.9%. HR-TEM and TDS analyses confirm that Mo addition effectively suppresses local amorphization and irreversible hydrogen trapping. Proper adjustment of Mo content can significantly improve cyclic stability while maintaining favorable hydrogen storage performance, providing an important basis for the compositional design of high-performance vanadium-free BCC hydrogen storage alloys.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"252 ","pages":"Article 156197"},"PeriodicalIF":9.2000,"publicationDate":"2026-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Hydrogen Energy","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0360319926028351","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2026/6/26 0:00:00","PubModel":"Epub","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}

引用次数: 0

Abstract

BCC-type Ti–Cr–Mo alloys are low-cost and promising alternatives to vanadium-based hydrogen storage alloys, but their insufficient cyclic stability severely limits practical applications. In this work, single-phase BCC Ti–Cr–Mo alloys with different Mo contents were fabricated by vacuum arc melting combined with water quenching. The results indicate that increasing Mo content significantly enhances the structural stability of the alloys. Synergistically regulated by lattice parameters and bulk modulus, the maximum hydrogen storage capacity decreases from 3.5 wt% to 3.09 wt%, while the capacity retention after 50 cycles increases from 74.6% to 88.9%. HR-TEM and TDS analyses confirm that Mo addition effectively suppresses local amorphization and irreversible hydrogen trapping. Proper adjustment of Mo content can significantly improve cyclic stability while maintaining favorable hydrogen storage performance, providing an important basis for the compositional design of high-performance vanadium-free BCC hydrogen storage alloys.

查看原文本刊更多论文

Mo含量对bcc型TiCrMo合金储氢性能和循环稳定性的影响

bcc型Ti-Cr-Mo合金是钒基储氢合金的低成本和有前途的替代品，但其循环稳定性不足严重限制了实际应用。采用真空电弧熔炼结合水淬法制备了不同Mo含量的单相BCC Ti-Cr-Mo合金。结果表明，Mo含量的增加显著提高了合金的组织稳定性。在晶格参数和体积模量的协同调节下，最大储氢容量从3.5 wt%降低到3.09 wt%，而循环50次后的容量保持率从74.6%提高到88.9%。HR-TEM和TDS分析证实Mo的加入有效抑制了局部非晶化和不可逆氢捕获。适当调整Mo含量可显著提高循环稳定性，同时保持良好的储氢性能，为高性能无钒BCC储氢合金的成分设计提供重要依据。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

International Journal of Hydrogen Energy 工程技术-环境科学

CiteScore

13.50

自引率

25.00%

发文量

3502

审稿时长

60 days

期刊介绍： The objective of the International Journal of Hydrogen Energy is to facilitate the exchange of new ideas, technological advancements, and research findings in the field of Hydrogen Energy among scientists and engineers worldwide. This journal showcases original research, both analytical and experimental, covering various aspects of Hydrogen Energy. These include production, storage, transmission, utilization, enabling technologies, environmental impact, economic considerations, and global perspectives on hydrogen and its carriers such as NH3, CH4, alcohols, etc. The utilization aspect encompasses various methods such as thermochemical (combustion), photochemical, electrochemical (fuel cells), and nuclear conversion of hydrogen, hydrogen isotopes, and hydrogen carriers into thermal, mechanical, and electrical energies. The applications of these energies can be found in transportation (including aerospace), industrial, commercial, and residential sectors.