Issue

Vol. 17 (2025)

V–Ti-Based Solid Solution Alloys for Solid-State Hydrogen Storage

https://doi.org/10.1007/s40820-025-01672-w
Shaoyang Shen
School of Materials Science and Engineering and Key Laboratory of Advanced Energy Storage Materials of Guangdong Province, South China University of Technology, Guangzhou 510641, People’s Republic of China
Yongan Li
School of Materials Science and Engineering and Key Laboratory of Advanced Energy Storage Materials of Guangdong Province, South China University of Technology, Guangzhou 510641, People’s Republic of China
Liuzhang Ouyang
School of Materials Science and Engineering and Key Laboratory of Advanced Energy Storage Materials of Guangdong Province, South China University of Technology, Guangzhou 510641, People’s Republic of China
Lan Zhang
Energy Research Institute at NTU (ERI@N), Nanyang Technological University, 1 CleanTech Loop, Singapore 637141, Singapore
Min Zhu
School of Materials Science and Engineering and Key Laboratory of Advanced Energy Storage Materials of Guangdong Province, South China University of Technology, Guangzhou 510641, People’s Republic of China
Zongwen Liu
Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, People’s Republic of China

Corresponding Author: Zongwen Liu

zongwen.liu@sydney.edu.au

Nano-Micro Letters, Vol. 17 (2025), Article Number: 175

Abstract

This review details the advancement in the development of V–Ti-based hydrogen storage materials for using in metal hydride (MH) tanks to supply hydrogen to fuel cells at relatively ambient temperatures and pressures. V–Ti-based solid solution alloys are excellent hydrogen storage materials among many metal hydrides due to their high reversible hydrogen storage capacity which is over 2 wt% at ambient temperature. The preparation methods, structure characteristics, improvement methods of hydrogen storage performance, and attenuation mechanism are systematically summarized and discussed. The relationships between hydrogen storage properties and alloy compositions as well as phase structures are discussed emphatically. For large-scale applications on MH tanks, it is necessary to develop low-cost and high-performance V–Ti-based solid solution alloys with high reversible hydrogen storage capacity, good cyclic durability, and excellent activation performance.


Highlights:
1 Hydrogen storage performance of V-Ti-based solid solution alloys is related to the elementary composition, phase structure, and homogeneity.
2 Micro-strain accumulation is responsible for capacity degradation.
3 Low-cost and high-performance V-Ti-based solid solution alloys with high reversible hydrogen storage capacity, good cyclic durability, and excellent activation performance should be developed.

Keywords

Hydrogen storage V–Ti-based solid solution alloys Metal hydride tank Hydrogen storage properties Cyclic stability
Shen, Shaoyang, Yongan Li, Liuzhang Ouyang, Lan Zhang, Min Zhu, and Zongwen Liu. 2025. “V–Ti-Based Solid Solution Alloys for Solid-State Hydrogen Storage”. Nano-Micro Letters 17 (March):175. https://doi.org/10.1007/s40820-025-01672-w.
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