INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2023
·
IF 7.2
Yuan Zhao,Qingshuang Wang,Dongming Yin,Shouliang Li,Chunli Wang,Long Liang,Shaolei Zhao,Chunmin Zhang,Limin Wang,Yong Cheng
The high dehydrogenation temperature of α-AlH 3 has always been an important factor hindering its development. In order to solve this problem, we synthesize Bi-MOF by hydrothermal method and burn it under inert gas to obtain Bi@C, which is used as catalyst ( x Bi@C, x = 3, 5 and 7 wt%) to improve the hydrogen desorption performance of α-AlH 3 . The dehydrogenation onset temperature of α-AlH 3 +5 wt% Bi@C drop to 80.4 °C, which is reduced by 43.4% compared with pure α-AlH 3 . At 120 °C, it can provide a stable hydrogen capacity of 7.45 wt%. In contrast, pure α-AlH 3 releases only 6.66 wt% hydrogen at the same time. The density functional theory calculations further indicate that the existence of Bi@C catalyst can make the Al–H bond length increase, more conducive to the release of hydrogen. The results show that the synergistic effect of Bi and porous carbon in Bi@C materials can improve the hydrogen desorption kinetics of α-AlH 3 , providing a good prospect for the application of α-AlH 3 in hydrogen storage .
研究领域:
材料科学
·
氢能存储
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产品关联
DOI
高影响因子
CHEMISTRY-A EUROPEAN JOURNAL
·
2025
·
IF 3.7
Yue-Qi Liu,Wen-Hao Pan,Lin-Xia He,Chenglong Han,Tong Lu,Ning-Ning Zhang,Kun Liu
Graphical AlH 3 ·(NMP) x complexes with varying coordination numbers were synthesized. AlH 3 ·(NMP) 1.0 single crystals were isolated from AlH 3 ·(NMP) x mixtures, and successfully elucidated the structure of AlH 3 ·(NMP) 1.0 through single-crystal X-ray diffraction. The coordination number of AlH 3 ·(NMP) x modulates the morphology of Al nanoparticles. AlH 3 ·(NMP) 1.0 exhibited the fastest decomposition rate, yielding highly monodisperse Aluminum nanoparticles (Al NPs) with well-defined shapes and the narrowest size distribution. The controlled chemical synthesis of aluminum nanocrystals (Al NCs) is crucial for their applications in plasmonics, photocatalysis, and optoelectronics. However, there is still a lack of correlation between the precursor of Al hydride N-methylpyrrolidine (AlH 3 ·(NMP) x ) and the Al NC synthesis outcomes. Here, we report the synthesis of AlH 3 ·(NMP) x complexes with different coordination numbers (x from 1.0 to 2.0) and their characterization as precursors regulating the morphology of Al NCs. We isolated AlH 3 ·(NMP) 1.0 single crystals from AlH 3 ·(NMP) x mixtures and successfully elucidated the structure of AlH 3 ·(NMP) 1.0 through single-crystal X-ray diffraction. Importantly, AlH 3 ·(NMP) 1.0 exhibited the fastest decomposition rate, yielding highly monodisperse Al NCs with well-defined shapes and the narrowest size distribution, while higher coordination numbers led to increased dispersity in size and irregular morphologies. Additionally, we observed distinct multipole plasmonic resonances in Al NCs synthesized from lower coordination number precursors, highlighting their superior optical properties. This work establishes a direct correlation between precursor coordination chemistry and Al NC synthesis outcomes, providing a foundation for optimizing nanoparticle production for advanced material applications.
研究领域:
材料科学
·
化学
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2024
·
IF 8.1
Chenlu Xue,Haipeng Jiang,Chenchen Zhu,Wei Gao
AlH 3 is a promising hydrogen storage material, but poses an explosion risk when suspended in air. Herein, a low-cost and environmentally friendly composite explosion suppressant is prepared using ultrasound coupled cooling crystallization and applied to suppress AlH 3 explosions. Ultrasound-induced cavitation inhibits crystal agglomeration, resulting in fine KH 2 PO 4 crystals growing on the SiO 2 surface by heterogeneous nucleation, which significantly improves the suppression effect. The decomposition products of KH 2 PO 4 react with the flame radicals in the system to generate stable products, interrupting the chain reaction of flame radicals effectively. Furthermore, the complex mesoporous structure of SiO 2 absorbs flame radicals and increases the collision probability between the radicals and the pore walls, thus suppressing flame propagation. Our research provides an important theoretical support for the safe application of light metal hydrogen storage materials.
研究领域:
材料科学
·
能源存储
·
安全工程
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产品关联
DOI
高影响因子
Nano Research
·
2024
·
IF 9.5
Zhao Yuan,Wang Qingshuang,Yin Dongming,Wang Xiaoli,Li Shouliang,Wang Chunli,Liang Long,Zhao Shaolei,Wang Limin,Cheng Yong
α-AlH 3 is regarded as one of the most promising hydrogen storage materials due to its high hydrogen storage capacity (10.1 wt.%, 148 kg·m −3 ). However, in practical applications, the associated hydrogen release temperature remains relatively high. To effectively address this issue, hollow structured Fe@C nanorods derived from Fe-MOF are introduced as highly efficient catalyst to optimize the dehydrogenation properties of α-AlH 3 . Comparatively, the initial hydrogen release temperature of α-AlH 3 + 3 wt.% Fe@C is reduced to 94.2 °C, which is significantly lower than that of pure α-AlH 3 (137.8 °C). At 100 and 120 °C, it exhibits hydrogen capacities of 5.38 wt.% and 7.47 wt.%, respectively, whereas pure α-AlH 3 only delivers hydrogen capacities of 0.24 wt.% and 5.94 wt.% under the same temperatures. The density functional theory (DFT) calculations further indicate that the existence of Fe@C catalyst can make the length of Al–H bond increase, which is more conducive to the release of hydrogen. The results show that the synergistic effect of Fe and porous carbon in Fe@C nanorods can improve the hydrogen desorption kinetics of α-AlH 3 , providing a good prospect for the application of α-AlH 3 in hydrogen storage fields.
研究领域:
材料科学
·
化学工程
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2024
·
IF 8.1
Zhongxuan Lin,Zhenluo Yuan,Huanhuan Zhang,Shuyan Guan,Xiaojiao Wang,Shiqian Zhao,Guangxin Fan,Yanping Fan,Baozhong Liu
Lowering the dehydrogenation temperature and maintaining high dehydrogenation capacity are greatly hindering the practical application of α-AlH 3 for the hydrogen fuel cell industry. Herein, the layered accordion-like V 2 C MXene is synthesized and doped into α-AlH 3 by mild ball milling . The 1 wt.% V 2 C-catalyzed α-AlH 3 possesses excellent dehydrogenation performance with a low initial decomposition temperature of 70.5 °C and a high hydrogen release capacity of 8.1 wt.%. Furthermore, 7.8 wt.% of hydrogen could be quickly released from α-AlH 3 -1 wt.% V 2 C composite within 15 min at 120 °C, with a lower activation energy of 69.5 kJ/mol than that of as-received sample. The excellent dehydrogenation performance is attributed to the high activity of the zero valence V catalyst which is transformed from the multivalent V during ball milling and to promote dissociation and reorganization of hydrogen. This effective approach significantly enhances the dehydrogenation of α-AlH 3 , providing a hopeful approach for modifying metal hydrides .
研究领域:
材料科学
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无机化学
·
能源化学
·
纳米材料
·
储氢材料
✓ 已验证
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2024
·
IF 20.2
Chunmin Zhang,Chunli Wang,Qingyun Shi,Xiaoli Wang,Shaolei Zhao,Long Liang,Qingshuang Wang,Limin Wang,Yong Cheng
The high hydrogen release temperature and thermodynamic stability of the coordination hydride LiAlH 4 render it unsuitable for direct application. This work intends to improve the hydrogen release properties via compositing LiAlH 4 and AlH 3 with similar initial hydrogen release temperatures and introduce efficient additive Ni/CeO 2 composite. The thermal stability of the composite system LiAlH 4 -AlH 3 is enormously reduced compared to that of LiAlH 4 . In addition, the preferential release of hydrogen from LiAlH 4 in the composite system provides additional heat for the subsequent release of hydrogen from AlH 3 , accelerating the hydrogen release process. As a result, LiAlH 4 -AlH 3 -Ni/CeO 2 composite performs enhanced hydrogen release performance with a hydrogen release capacity of 8.27 wt% hydrogen within 300 ℃ and a dehydrogenation onset temperature as low as 72.9 ℃. The enthalpy change of the first step hydrogen release reaction decreases from −11.99 kJ mol −1 (LiAlH 4 ) to −2.02 kJ mol −1 (LiAlH 4 -AlH 3 ). Theoretical calculations indicate that both atomic dehybridisation and electron redistribution expedite the breaking of the Al-H bond and the consequent release of hydrogen.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
ChemNanoMat
·
2023
·Vol. 9
·期 5
·e202300011
·
IF 3.8
Zhe Shi,Taojie Lu,Yinghui Hu,Yidong Xu,Xuwen Wang,Zhuo Wu,Jian Zheng,Jian Zhang,Zhaoyang Zhu,Kaifeng Lin,Yulin Yang
Graphical The encapsulation of pyrotechnic binder on the α-AlH 3 surface by a solvent/antisolvent method is a means to address its stability and safety, laying the foundation for its application in solid propellants. Alpha-aluminum hydride (α-AlH 3 ) is an ideal energetic combustion agent, but its poor stability and safety limit its application. Therefore, we prepare different composites by using the solvent/anti-solvent method to coat different pyrotechnic binders on the surface of α-AlH 3 . The vacuum stability test show that the minimum outgassing of Shellac-coated α-AlH 3 composite is only 1.2 mL/g at 50 °C for 6 days. Due to the good electrical insulation properties of Viton, Viton-coated α-AlH 3 composite have the highest E 50 value of electrostatic sensitivity. In addition, the pyrotechnic binders coating not only protects the activity of the α-AlH 3 but also effectively increases its burning rate. Viton-coated α-AlH 3 composite have more gaseous products and maximum flame area during combustion. This study illustrates that α-AlH 3 coated with pyrotechnic binders is a means to address its stability and safety, laying the foundation for its application in solid propellants.
研究领域:
材料科学
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化学工程
·
航空航天工程
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2024
·Vol. 59
·期 4
·1537-1549
·
IF 3.5
Chen Yongjin,Li Yaru,Fu Jianbo,Zhang Mi,Ren Hui,Jiao Qingjie
Aluminum hydride (AlH 3 ), as a potential new metal fuel, has attracted extensive attention in the field of hydrogen storage materials, propellants and energetic materials due to its excellent properties. In this paper, a new organic liquid phase reduction method was used to prepare AlH 3 , and the microstructure and composition of the prepared samples were characterized by SEM–EDS, XRD, FT-IR, XPS, etc. The main crystal phase of the prepared AlH 3 was α-AlH 3 , with high quality and no other impurities. The thermal decomposition behavior and non-isothermal reaction kinetics of AlH 3 were investigated by TG-DSC. The results show that there are three exothermic stages in the heating process of AlH 3 : dehydrogenation of AlH 3 , first oxidation of Al, and second oxidation of Al. The activation energy of the dehydrogenation of AlH 3 is 77.8675 kJ/mol (Kissinger method) and 81.4862 kJ/mol (Ozawa method), respectively. The morphology evolution of AlH 3 particles during the heating process (300–3000 K) was simulated using a reaction kinetics method based on the ReaxFF force field. The response behavior of AlH 3 in the instantaneous high-temperature detonation environment was investigated using the high-energy laser-induced shock wave technique. Under the impact of a high-energy laser (1006 mJ), the AlH 3 sample undergoes an ultra-fast reaction and generates a large amount of plasma. The expansion of the plasma pushes the surrounding air to form a supersonic shock wave and propagates forward. The shock wave propagation velocity of AlH 3 is 690.99 m/s in the range of 2.1–12.35 μs, and the higher the laser energy, the faster the shock wave propagation velocity. This study provides the basis for the application of AlH 3 . Graphical Abstract
研究领域:
氢存储材料
·
推进剂
·
高能材料
·
材料科学
·
化学工程
·
物理学
✓ 已验证
产品关联
DOI
高影响因子
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
·
2025
·
IF 7.8
Xin Zhang,Yun Zhang,Zhanggui Xu,Xinfeng Li,Sen Xu,Xingliang Wu,Zhuanghong Zhou,Yongan Feng,Fengyuan Jiao,Weiguo Cao
Aluminium hydride (AlH 3 ), a promising metal-based hydrogen storage material, faces problems related to its relatively poor stability. In the paper, the thermal stability of stearic acid-coated AlH 3 (SA/AlH 3 ) and AlH 3 was compared by thermogravimetric analysis and minimum ignition temperature test, including pyrolysis and ignition stability. The decomposition temperature and apparent activation energy of SA/AlH 3 were higher than those of AlH 3 , indicating that the decomposition was more difficult. During pyrolysis, SA/AlH 3 demonstrated a higher minimum ignition temperature and a slower rate of potential energy decline, which indicated that the coating of SA had improved the thermal stability of AlH 3 . Reactive force field molecular dynamics simulation revealed the difference in pyrolysis behavior between AlH 3 and SA/AlH 3 . Small molecular products such as H 2 , H 2 O, CH 4 , C 2 H 4 , CO, and CO 2 were generated, further generating clusters dominated by C-Al bonds. Improving the thermal stability of SA/AlH 3 coating is an important reference for the application of AlH 3 in energetic materials.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
RARE METALS
·
2025
·
IF 11
Zhang Liang,He Zhi-Ling,Ning Hua,Luo Hui,Wei Qin-Qin,Qing Pei-Lin,Huang Xian-Tun,Wang Xin-Hua,Li Guang-Xu,Huang Cun-Ke,Lan Zhi-Qiang,Zhou Wen-Zheng,Guo Jin,Ismail Mohammad,Liu Hai-Zhen
As a hydrogen storage material, both AlH 3 and LiNH 2 possess a high hydrogen capacity. However, the dehydrogenated AlH 3 can hardly absorb hydrogen under normal conditions, while LiNH 2 will generate NH 3 rather than H 2 upon decomposition. In this work, we report that the combination of AlH 3 and LiNH 2 through simple ball milling leads to partial reversibility of the AlH 3 −LiNH 2 system and the suppression of NH 3 liberation. The negatively charged H δ − in AlH 3 will react with the positively charged H δ + in LiNH 2 through a redox reaction to form Li 2 NH, AlN, and H 2 at 120−170 °C. After dehydrogenation at above 270 °C, Li 3 AlN 2 is generated, which is crucial for the reversibility of this system. The more the Li 3 AlN 2 generated, the better the reversibility of this system. The dehydrogenation capacity of AlH 3 + 2LiNH 2 at the third cycle (3.0 wt%) is higher than that of AlH 3 + LiNH 2 (1.2 wt%) due to the generation of more Li 3 AlN 2 . The role of AlH 3 /Al in the AlH 3 −LiNH 2 system is to fix the nitrogen into the form of AlN and Li 3 AlN 2 and thus suppress the liberation of NH 3 . Therefore, the synergy of AlH 3 and LiNH 2 leads to the reversibility of the Li–Al–N–H system and the suppression of NH 3 . Graphical abstract
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
Catalysts
·
2025
·Vol. 15
·期 12
·1143
·
IF 4
Zhiling He,Liang Zhang,Hua Ning,Zhicong Yang,Jiazheng Mao,Hui Luo,Qinqin Wei,Guangxu Li,Cunke Huang,Zhiqiang Lan,Wenzheng Zhou,Jin Guo,Xinhua Wang,Haizhen Liu
Aluminum hydride (AlH3) features a theoretical hydrogen content of 10.1 wt%, with initial hydrogen desorption temperatures generally ranging from 150 to 200 °C. However, its metastability makes it complicated to achieve low hydrogen desorption temperatures alongside high desorption capacities, which has limited its practical application. This study aims to improve the hydrogen desorption performance of AlH3by incorporating different MXenes (V2C, Nb2C, Ti3C2, Ti3CN) accompanied by ball milling condition and catalyst content optimizations. It was shown that AlH3catalyzed with 1 wt% Nb2C, ball milled at 300 rpm for 180 min under an argon atmosphere, exhibits the best performance, achieving an initial hydrogen desorption temperature of 95 °C and a final hydrogen desorption content of 9.3 wt%. It was further demonstrated that Nb2C MXene mainly acts as an efficient catalyst for the hydrogen desorption process of AlH3and can extend the Al–H bonds of AlH3in local interphase regions observed by means of theoretical calculation, thus enhancing the hydrogen desorption performance of AlH3. This work proposes a method to achieve high-capacity and low-temperature hydrogen desorption from metastable AlH3through proper ball milling and the introduction of MXenes.
研究领域:
材料科学
·
氢能
·
纳米催化
·
能量存储
✓ 已验证
产品关联
DOI
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2024
·
IF 5.3
Xing Yan,Minjie Li,Dongjie Liao,Jianquan Jing,Jiao Chen,Jiechao Wang,Mianji Qiu,Chuanhao Xu,Jingyu Wang,Chongwei An
Surface coating is an important method to solve the poor stability of aluminum hydride (AlH 3 ). To overcome the difficulty of uneven coating of fluorine-containing polymers on the surface of AlH 3 , this study utilizes the adhesion properties of polydopamine (PDA) to establish a bridge between the oxide layer of AlH 3 (Al 2 O 3 ) and polyvinylidene fluoride (PVDF), so that Polyvinylidene fluoride (PVDF) was uniformly coated on the AlH 3 surface, and a dual-core shell structure AlH 3 @PDA@PVDF composite was successfully prepared. Molecular dynamics simulations reveal significantly higher binding energy per unit area for γ-Al 2 O 3 @PDA/PVDF (1.2270 Kcal·mol −1· Å −2 ) compared to γ-Al 2 O 3 /PVDF (0.6644 Kcal·mol −1· Å −2 ), affirming that PDA can effectively enhance the interfacial interaction between AlH 3 and PVDF. The morphology characterization and performance testing of raw AlH 3 and AlH 3 @PDA@PVDF composite were carried out through SEM, XPS , FT-IR, DSC , VST, etc. The results indicate that through the interface modification of AlH 3 by PDA, PVDF with a hydrophobic surface can be evenly coated on the surface of AlH 3 , causing the water contact angle (WCA) of the AlH 3 @PDA@PVDF composite to increase from 41° for the raw AlH 3 to 124°. Furthermore, the total decomposition time of the AlH 3 @PDA@PVDF composite (2326 min) is improved by 1.8 times than that of the raw sample (1277 min), and its apparent activation energy (117.75 kJ·mol −1 ) was also higher than that of the raw sample (99.88 kJ·mol −1 ), indicating that coating with PDA and PVDF can improve the stability of AlH 3 . Ignition experiments demonstrate that the AlH 3 @PDA@PVDF composite has superior ignition reaction performance compared with the raw AlH 3 . Especially, adding a small amount of AlH 3 @PDA@PVDF composite can also significantly catalyze the thermal decomposition process of ammonium perchlorate (AP), reducing its high-temperature decomposition temperature from 405.37 °C to 352.20 °C.
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）