摘要
As one of the most promising new energy sources,hydrogen energy is expected to usher in a full-fledged“hydrogen economy”in the 21st century.Compared with traditional high-pressure gaseous and cryogenic liquid hydrogen storage methods,solid-state chemical hydrogen storage shows significant advantages in safety,high efficiency,and cost-effectiveness.Magnesium-based lightweight hydrogen storage materials have attracted widespread attention due to their high gravimetric hydrogen storage density(7.6%)and favorable reversibility.However,their sluggish reaction kinetics and stringent operating conditions(with H2 release temperatures exceeding 350°C and H2 absorption pressures above 4 MPa)pose major challenges for practical applications.Domestic and international researchers have conducted in-depth studies to address these issues,achieving substantial progress in the modification of magnesium-based hydrogen storage alloys.This paper systematically elaborates on major modification techniques such as alloying,nanostructuring,and catalytic material doping,providing a comprehensive analysis of the strengths and limitations of each approach.Furthermore,it offers prospects for the future development of magnesium-based hydrogen storage materials by integrating current theoretical and experimental research findings.
氢能作为最具发展潜力的新能源之一,有望在21世纪全面进入“氢经济”时代。与传统高压气态与低温液态储氢方式相比,固态化学储氢具有安全、高效、经济等显著优势。镁基轻质储氢材料因其高重量储氢密度(7.6%)与良好的可逆性而被广泛关注,但其缓慢的反应动力学性能与苛刻的操作条件(放氢温度高达350℃、吸氢压力超过4 MPa)使材料的应用面临巨大挑战。各国学者针对这些难题已开展了深入研究,在镁基储氢合金改性领域取得了诸多研究进展。本工作阐述了主要改性工艺如合金化、纳米化、催化材料掺杂等方法,深入分析梳理了各改性方法的优劣之处,并结合当前理论与实验研究成果对未来镁基储氢材料的发展趋势做出了前景展望。
出处
《燃料化学学报(中英文)》
北大核心
2026年第2期46-63,共18页
Journal of Fuel Chemistry and Technology
基金
Supported by Design and Performance Study of High-flux Metal Hydride Reactor Based on the Bionic Optimization(2078262)
the‘Four-Chain’Integration Project at the Qinchuangyuan Chief Platform(S2025-YF-ZDXM)。
