GB/T 44754-2024 in English
VALIDRE-base hydrogen storage alloy used in solid-state hydrogen storage
- Issued on:2024-10-26
- Implemented on:2025-05-01
- File Format:PDF
- Delivery:Within 1 day
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| Standard No: | GB/T 44754-2024 |
| Document status: | VALID |
| Title in English: | RE-base hydrogen storage alloy used in solid-state hydrogen storage |
| Title in Chinese: | 固态储氢用稀土系储氢合金 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Within 1 day |
| Issued on: | 2024-10-26 |
| Implemented on: | 2025-05-01 |
| ICS Classification: | 77.120.99-Other non-ferrous metals and their alloys |
| Chinese Classification: | H65-Rare metals and their alloys |
| Professional Classification: | GB-National Standard |
| Related Keywords: | solid-state hydrogen storage
hydrogen storage alloy solid-state hydrogen storage technology earth hydrogen storage re-base hydrogen storage alloy |
| Related Topics: | Rare Earth Standard
Hydrogen Hydrogen Hydrogen Spectrum + Hydrogen Rare Earth Capital Rare earth mining Rare earth alloy series Solid state hydrogen storage Solid state hydrogen storage group |
《GB/T 44754-2024固态储氢用稀土系储氢合金》由TC229（全国稀土标准化技术委员会）归口，主管部门为国家标准委。
Introduction
Interpretation of the Standard for Rare Earth Hydrogen Storage Alloys for Solid-State Hydrogen Storage
1. Overview of the Standard
GB/T 44754—2024 Rare Earth Hydrogen Storage Alloys for Solid-State Hydrogen Storage is an important standard for the field of solid-state hydrogen storage technology, which specifies the classification, technical requirements, test methods and quality control requirements of rare earth hydrogen storage alloys. This standard is applicable to rare earth hydrogen storage alloys for solid-state hydrogen storage produced by vacuum induction melting process.
2. Comparison of standard frameworks
| Standard dimensions | GB/T 44754—2024 | International similar standards | Other domestic standards |
|---|---|---|---|
| Classification system | 6 grades, 3 series (LaNi, LaMgNi, LaYNi) | Similar structures, but differences in grades and performance indicators | Some local standards supplement requirements for special application scenarios |
| Technical indicators | Maximum hydrogen absorption capacity ≥95%, cycle stability ≥95% | EU standard: hydrogen absorption and desorption efficiency ≥90% | Industry standards vary greatly, and some are not unified |
| Test methods | GB/T 1.1 guidelines are adopted, and the appendix specifies the test process in detail | International Organization for Standardization (ISO) recommended methods | Local standards are mostly based on the GB/T system |
3. Background of standard formulation and technological evolution
Background analysis:With the transformation of the global energy structure and the rapid development of hydrogen energy technology, solid-state hydrogen storage technology has attracted widespread attention due to its safety and efficiency. As the core material, the performance of rare earth hydrogen storage alloys is directly related to the efficiency and life of the hydrogen storage system.
Technological evolution:From the early application of nickel-metal hydride batteries to modern high-density solid-state hydrogen storage, rare earth hydrogen storage alloys have gone through three stages: material formula optimization, crystal structure improvement, and cycle stability improvement. The formulation of this standard marks the systematization of my country's technical specifications in this field.
4. Implementation suggestions
- Material selection:Select the appropriate brand of hydrogen storage alloy according to the application scenario, focusing on the maximum hydrogen absorption and cycle stability indicators.
- Quality control:Inspect strictly in accordance with the test methods specified in the standard, especially chemical composition analysis and PCI characteristic testing.
- Process optimization:It is recommended that enterprises optimize the alloy preparation process in combination with their own production processes to improve product consistency.
- Technological innovation:Enterprises are encouraged to carry out research and development of new rare earth hydrogen storage alloys to promote technological progress in the industry.
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