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Updated: Sep 9, 2025
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Hydrogen Charging of Aluminum using Friction in Water
Published on: January 28, 2020
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Resolving the Capacity-Stability-Cost Trilemma in Multi-Principal-Element Hydrogen Storage Alloys Through
Panpan Zhou1,2,3, Qianwen Zhou2, Wenzhe Liu2
1School of Advanced Energy, Sun Yat-Sen University, Shenzhen, Guangdong, 518107, China.
Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|August 31, 2025
Summary
Researchers developed a novel multi-principal-element alloy (MPEA) for metal hydride hydrogen storage. This breakthrough material offers high capacity and stability under mild conditions, addressing key challenges in energy-efficient hydrogen applications.
Area of Science:
- Materials Science
- Chemical Engineering
- Energy Storage
Background:
- Metal hydrides face a capacity-stability-cost trilemma, hindering practical hydrogen storage.
- Current research often optimizes single parameters, lacking holistic approaches.
- C14 Laves phase alloys are promising but require optimized design.
Purpose of the Study:
- To propose a novel design paradigm for multi-principal-element alloys (MPEAs) in C14 Laves phases.
- To concurrently optimize hydrogen storage capacity, stability, and cost.
- To develop materials for energy-efficient hydrogen storage applications.
Main Methods:
- Orchestrating A/B-side MPEAs in C14 Laves phases.
- Elemental screening and precise composition engineering.
- Characterization of hydrogen storage capacity, thermodynamics, and cycling stability.
Main Results:
- An optimized Ti0.8Zr0.22Mn1.22Cr0.53(VFe)0.25 MPEA achieved 2.06 wt.% capacity at 20°C and 1.6 MPa.
- Exceptional reversible capacity of 1.93 wt.% at 80°C with 93.7% utilization efficiency.
- Superior structural robustness with negligible property degradation over extended cycling.
Conclusions:
- The proposed MPEA design overcomes the capacity-stability-cost trilemma in hydrogen storage.
- This material demonstrates superior performance compared to existing C14 Laves-phase materials.
- Establishes new design guidelines for high-performance, cost-effective hydrogen storage materials.
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