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| 1 | Enhancing (de)hydrogenation kinetics properties of the Mg/MgH_(2) system by adding ANi_(5)(A=Ce,Nd,Pr,Sm,and Y) alloys via ball milling显示文摘Magnesium(Mg)-based alloys have already been widely studied as the hydrogen storage materials because of their high reversible hydrogen storage capacity,low cost,light weight,etc.However,the poor de/hydrogenation kinetic properties dramatically hinder the practical applications.In this work,the MgH_(2)-ANi_(5)(A=Ce,Nd,Pr,Sm,and Y) composites were prepared by a high-energy ball milling method.which can effectively refine the particle size thus improving the kinetic properties.Experimental results reveal that the MgH_(2)-ANi_(5) composites mainly consist of Mg_(2)NiH_(4),MgH_(2) and rare earth(RE) hydride,which will be dehydrogenated to form Mg_(2)Ni,Mg and stable RE hydride reversibly.Accordingly,the asmilled MgH_(2)-ANi_(5)(A=Ce,Nd,Pr,Sm,and Y) composites with various A-elements can respectively contribute to a reversible hydrogen storage capacity of 6.16 wt%,5.7 wt%,6.21 wt%,6.38 wt%,and 6.5 wt%at a temperature of 300℃,and show much better kinetic properties in comparison to the pure MgH_(2) without any additive.In-situ formed Mg_(2) Ni and stable RE hydride(such as CeH_(2.73) and YH_(2)) might act as effective catalysts to significantly improve the hydrogen storage properties of MgH_(2).The present work provides a guideline on improving the kinetic properties of the Mg-based hydrogen storage alloys. | Wenfang Liao Wenbin Jiang Xu-Sheng Yang Hui Wang Liuzhang Ouyang Min Zhu | 2021 | Journal of Rare Earths2021，39，8： | 3 |
| 2 | Effect of Ni on Mg based hydrogen storage alloy Mg_3Nd显示文摘Magnesium-neodymium based alloys were prepared by induction melting in an alumina crucible under protection of pure argon atmosphere. XRD patterns show that the as-melted Mg-Nd and Mg3NdNi0.1 diffraction peaks can be excellently indexed with D03 structure (BiF3 type, space group Fm3m). The lattice constant of Mg3Nd phase is 0.7390 nm, which is determined by XRD analysis using Cohen′s extrapolation method. The reversible hydrogen storage capacity reaches 1.95wt.% for Mg3Nd and 2.68wt.% for Mg3NdNi0.1. The desorption of hydrogen takes place at 291 ℃ for Mg3Nd and at 250 ℃ for Mg3NdNi0.1. The alloys could absorb hydrogen at room temperature with rapid hydriding and dehydriding kinetics after only one cycle. The enthalpy (ΔH) and entropy (ΔS) of Mg3Nd-H dehydriding reaction were -68.2 kJ·mol-1 H2 and -0.121 kJ·(K·mol)-1 H2 determined by using van′t Hoff plot according to the pressure-composition-isotherms (P-C-I) curve measured at different temperatures. Hydrogen absorption kinetic property of Mg3NdNi0.1 alloy was also measured at room temperature. | TONG Yanqing OUYANG Liuzhang ZHU Min | 2006 | Rare Metals2006，25，z1： | 2 |
| 3 | Aberrant splicing of intron 1 leads to the heterogeneous 5′ UTR and decreased expression of waxy gene in rice cultivars of intermediate amylose content显示文摘 | Xiu‐LingCai Zong‐YangWang Yan‐YanXing Jing‐LiuZhang Meng‐MinHong | 2002 | The Plant Journal2002，，4： | 1 |
| 4 | Fabrication and microstructure of in situ Al2O3 decomposed from Al2(SO4)3-reinforced aluminum matrix composites 显示文摘 | Ouyang Liuzhang Luo Chengping Sui Xiandong | 2002 | Materials Letters2002，57，： | 1 |
| 5 | A fast algorithm for solving linear systems of the Pascal type显示文摘 | Wang Xiang Lu Liuzhang | 2005 | Applied Mathematics and Computation2005，170，： | 1 |
| 6 | A fast algorithm for solving linear systems of the Pascal type显示文摘 | Wang Xiang Lu Liuzhang | 2006 | Applied Mathematics and Computation2006，175，： | 1 |
| 7 | High-capacity LiV 3 O 8 thin-film cathode with a mixed amorphous–nanocrystalline microstructure prepared by RF magnetron sputtering显示文摘 | Qian Shi Renzong Hu Liuzhang Ouyang Meiqin Zeng Min Zhu | 2009 | Electrochemistry Communications2009，，11： | 1 |
| 8 | Sn buffered by shape memory effect of NiTi alloys as high-performance anodes for lithium ion batteries显示文摘 | Renzong Hu Min Zhu Hui Wang Jiangwen Liu Ouyang Liuzhang Jin Zou | 2012 | Acta Materialia2012，，12： | 1 |
| 9 | Hydrogen Production via Hydrolysis and Alcoholysis of Light Metal-Based Materials:A Review显示文摘As an environmentally friendly and high-density energy carrier,hydrogen has been recognized as one of the ideal alternatives for fossil fuels.One of the major challenges faced by“hydrogen economy”is the development of efficient,low-cost,safe and selective hydrogen generation from chemical storage materials.In this review,we summarize the recent advances in hydrogen production via hydrolysis and alcoholysis of light-metal-based materials,such as borohydrides,Mg-based and Al-based materials,and the highly efficient regeneration of borohydrides.Unfortunately,most of these hydrolysable materials are still plagued by sluggish kinetics and low hydrogen yield.While a number of strategies including catalysis,alloying,solution modification,and ball milling have been developed to overcome these drawbacks,the high costs required for the“one-pass”utilization of hydrolysis/alcoholysis systems have ultimately made these techniques almost impossible for practical large-scale applications.Therefore,it is imperative to develop low-cost material systems based on abundant resources and effective recycling technologies of spent fuels for efficient transport,production and storage of hydrogen in a fuel cell-based hydrogen economy. | Liuzhang Ouyang Jun Jiang Kang Chen Min Zhu Zongwen Liu | 2021 | Nano-Micro Letters2021，13，9： | 1 |
| 10 | In situ formed ultrafine metallic Ni from nickel(Ⅱ) acetylacetonate precursor to realize an exceptional hydrogen storage performance of MgH_(2)-Ni-EG nanocomposite显示文摘It has been well known that doping nano-scale catalysts can significantly improve both the kinetics and reversible hydrogen storage capacity of MgH_(2) . However, so far it is still a challenge to directly synthesize ultrafine catalysts(e.g., < 5 nm), mainly because of the complicated chemical reaction processes. Here, a facile one-step high-energy ball milling process is developed to in situ form ultrafine Ni nanoparticles from the nickel acetylacetonate precursor in the MgH_(2) matrix. With the combined action of ultrafine metallic Ni and expanded graphite(EG), the formed MgH_(2)-Ni-EG nanocomposite with the optimized doping amounts of Ni and EG can still release 7.03 wt.% H_(2) within 8.5 min at 300 ℃ after 10 cycles. At a temperature close to room temperature(50 ℃), it can also absorb 2.42 wt.% H_(2) within 1 h. It can be confirmed from the microstructural characterization analysis that the in situ formed ultrafine metallic Ni is transformed into Mg_(2)Ni/Mg_(2)NiH_4 in the subsequent hydrogen absorption and desorption cycles. It is calculated that the dehydrogenation activation energy of the MgH_(2)-Ni-EG nanocomposite is also reduced obviously in comparison with the pure MgH_(2) . Our work provides a methodology to significantly improve the hydrogen storage performance of MgH_(2) by combining the in situ formed and uniformly dispersed ultrafine metallic catalyst from the precursor and EG. | Shaoyang Shen Liuzhang Ouyang Jiangwen Liu Hui Wang Xu-Sheng Yang Min Zhu | 2023 | Journal of Magnesium and Alloys2023，11，9： | 0 |
| 11 | Effect of scandium and zirconium alloying on microstructure and gaseous hydrogen storage properties of YFe_(3)显示文摘RM_(3) compounds(R=rare earth metals,M=transition metals)have rarely been studied for gaseous hydrogen storage applications because of unfavorable thermodynamics.In this work,the hydrogen storage properties of a single-phase YFe_(3)alloy were improved by non-stoichiometric composition and alloying with Sc and Zr.Only the Y_(1.1-y)Sc_(y)Fe_(3)(y=0.22,0.33)alloys consist of a single rhombohedral phase.The Sc substitution for Y leads to the reduction in the unit cell volume of the YFe_(3)phase,and thus significantly increases the dehydriding equilibrium pressure and decreases the dehydrogenation temperature.The alloy Y_(0.77)Sc_(0.33)Fe_(3)delivers a decomposition enthalpy change of 33.54 kJ/mol and a lowest dehydrogenation temperature of 135℃,in comparison with 38.99 kJ/mol and 165℃ for the alloy Y_(1.1)Fe_(3).The Zr substitution causes a similar thermodynamic destabilization effect,but the composition and microstructure of Y-Zr-Fe alloys need to be further optimized. | Zhikun Fang Hui Wang Jiangwen Liu Liuzhang Ouyang Min Zhu | 2022 | Journal of Rare Earths2022，40，3： | 0 |
| 12 | Study of Manufacture Technology of In Situ Al2O3 Decomposed from Al2(SO4)3 Reinforced Aluminum Matrix Composites显示文摘 | Ouyang liuzhang | 2000 | 材料科学与工程学报2000，20，z1： | 0 |
| 13 | Hydrogen storage properties of preferentially orientated Mg-Ni multilayer film prepared by magnetron sputtering显示文摘Mg-Ni multi-layer thin film was deposited on (001) Si wafer by magnetron sputtering with dual-target. X-ray diffraction (XRD) and scanning electron microscopy (SEM) analysis reveal that the microstructure of the Mg-Ni multilayer thin film is composed of fine-crystalline Ni layer and crystalline [001] Mg layer. Hydrogenation process of the films were carried out by using the automatic gas reaction controller. The films undergone hydrogenation for different time were analyzed by XRD. The results show that hydrogenation properties of Mg with different preferential orientations are different. (002) diffraction peak of Mg disappears in compensating the appearing of the peaks of Mg2NiH4 and MgH2 in hydrogenation at 533 K, while the (101) peak still remains. The result reveals that the Mg film with (001) preferential orientation absorbs hydrogen at certain temperature easier than that of the Mg film with (101) orientation. This phenomenon can be explained in the view point of the energy change for the nucleation and growth of hydride in different crystal plane. | YE Suyun OUYANG Liuzhang ZHU Min | 2006 | Rare Metals2006，25，z1： | 0 |
| 14 | Achieving a novel solvent-free regeneration of LiBH_(4) combining hydrogen storage and production in a closed material cycle显示文摘LiBH_(4) has been considered as one of the most promising energy storage materials with its ultrahigh hydrogen capacity,which can supply hydrogen through hydrolysis process or realize hydrogen-to-electricity conversion via anodic oxidation reaction of direct borohydride fuel cells(DBFCs).However,the realization of practical hydrogen applications heavily depends on the effective synthesis of high-purity LiBH_(4) and recycling of the spent fuels(LiBO_(2)·xH_(2)O).The present work demonstrates a convenient and high-efficiency solvent-free strategy for regenerating LiBH_(4) with a maximum yield close to 80%,by retrieving its by-products with MgH_(2) as a reducing agent under ambient conditions.Besides,the hydrogen released from the regeneration course can completely compensate the demand for consumed MgH_(2).The isotopic tracer method reveals that the hydrogen stored in LiBH_(4) comes from both MgH_(2) and coordinated water bound to LiBO_(2).Here,the expensive MgH_(2) can be substituted with the readily available and cost-effective MgH_(2)-Mg mixtures to simplify the regeneration route.Notably,LiBH_(4) catalyzed by CoCl_(2) can stably supply hydrogen to proton exchange membrane fuel cell(PEMFC),thus powering a portable prototype vehicle.By combining hydrogen storage,production and utilization in a closed cycle,this work offers new insights into deploying boron-based hydrides for energy applications. | Kang Chen Hao Zhong Liuzhang Ouyang Fen Liu Hui Wang Jiangwen Liu Huaiyu Shao Min Zhu | 2023 | Journal of Magnesium and Alloys2023，11，5： | 0 |
| 15 | Synthesis of amorphous SeP_(2)/C composite by plasma assisted ball milling for high-performance anode materials of lithium and sodium-ion batteries显示文摘To promote substantially the performances of red phosphorous(P)anode for lithium and sodium-ion batteries,a simple plasma assisted milling(P-milling)method was used to in-situ synthesize SeP_(2)/C composite.The results showed that the amorphous SeP_(2)/C composite exhibits the excellent lithium and sodium storage performances duo to the small nano-granules size and complete combination of selenium(Se)and phosphorous(P)to generate Se–P alloy phase.It was observed that inside the granules of SeP_(2)/C composite the nanometer size of the Se P_(2) particles ensured the fast kinetics for Li+and Na+transfer,and the amorphous carbon wrapping the Se P_(2) particles relieved volume expansion during lithium/sodium storage processes and enhances electric conductivity.Therefore,the SeP_(2)/C electrode retained reversible capacities of 700 m A h g^(-1) at 2 A g^(-1) after 500 cycles and 400 m A h g^(-1)at 0.5 A g^(-1) after 400 cycles as anode for LIBs and SIBs,respectively.The result proves that the amorphous SeP_(2)/C composite can be a new type of anode material with great potential for lithium and sodium-ion batteries. | Cheng Lin Liuzhang Ouyang Renzong Hu Jun Liu Lichun Yang Huaiyu Shao Min Zhu | 2021 | Progress in Natural Science:Materials International2021，31，4： | 0 |
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