余学斌
基于新型能源的纳米材料合成及改性;新型储氢材料的设计合成;微纳氢传感器及其关键材料;氢气的制备与纯化。
个性化签名
- 姓名:余学斌
- 目前身份:
- 担任导师情况:
- 学位:
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学术头衔:
博士生导师, 教育部“新世纪优秀人才支持计划”入选者
- 职称:-
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学科领域:
材料科学
- 研究兴趣:基于新型能源的纳米材料合成及改性;新型储氢材料的设计合成;微纳氢传感器及其关键材料;氢气的制备与纯化。
余学斌 教授/博导
简历:
武汉理工大学矿物加工工程本科,硕士学位。
中科院上海微系统与信息技术研究所材料物理与化学博士。
先后在英国Nottingham大学,澳大利亚Wollongong大学和丹麦Risoe National Laboratory做博士后,访问学者和访问科学家。
2008年3月作为人才引进至复旦大学材料科学系任教授。
研究方向:
基于新型能源的纳米材料合成及改性
新型储氢材料的设计合成
微纳氢传感器及其关键材料
氢气的制备与纯化
主要成果:
在金属氢化物的气固相反应和电化学性能,多元复合氢化物的储氢性能等方面开展了一定的工作。近几年在国内外发表SCI收录论文70余篇。申请中国发明专利20余项,英国发明专利两项。其中专利“高储氢量的钛-钒基储氢合金”获第五届中国国际发明展览会银奖,有关LiBH4/MgH2复合氢化物方面取得的新进展于2006年 9月被《文汇报》、《解放日报》、《青年报》和《中科院院刊》(英文版)等分别报道。
先后入选上海市“启明星计划”,上海市 “浦江人才计划”和教育部“新世纪优秀人才支持计划”。
主要在研项目:
LiBH4复合氢化物低温储氢技术研究,国家863项目,负责人
表面催化改善LiBH4储氢性能研究,人事部留学回国人员择优资助项目,负责人
多元复合轻金属氢化物储氢性能研究,复旦大学人才引进资助项目,负责人
传统金属氢化物催化LiBH4低温放氢性能的研究,国家留学人员回国启动基金,负责人
多元轻金属复合氢化物可逆吸放氢性能的研究,上海市科委浦江人才项目,负责人
用于车载氢源的复合氢化物可逆储氢性能的研究,教育部新世纪优秀人才项目,负责人
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成果数
19
【期刊论文】Enhanced hydrogen sorption properties of Ni and Co-catalyzed MgH2
余学斌, Jianfeng Mao a, Zaiping Guo a, c, d, *, Xuebin Yu a, b, Huakun Liu a, Zhu Wue, Jun Ni e
interational journal of hydrogen energy 35(2010)4569-4575,-0001,():
-1年11月30日
MgH2 is one of the most promising hydrogen storage materials due to its high capacity andlow cost. In an effort to develop MgH2 with a low dehydriding temperature and fastsorption kinetics, doping MgH2 with NiCl2 and CoCl2 has been investigated in this paper.Both the dehydrogenation temperature and the absorption/desorption kinetics have beenimproved by adding either NiCl2 or CoCl2, and a significant enhancement was obtained inthe case of the NiCl2 doped sample. For example, a hydrogen absorption capacity of5.17 wt% was reached at 300℃ in 60 s for the MgH2/NiCl2 sample. In contrast, theball-milled MgH2 just absorbed 3.51 wt% hydrogen at 300℃ in 400 s. An activation energyof 102.6 kJ/mol for the MgH2/NiCl2 sample has been obtained from the desorption data,18.7 kJ/mol and 55.9 kJ/mol smaller than those of the MgH2/CoCl2, which also exhibits anenhanced kinetics, and of the pure MgH2 sample, respectively. In addition, the enhancedkinetics was observed to persist even after 9 cycles in the case of the NiCl2 doped MgH2sample. Further kinetic investigation indicated that the hydrogen desorption from themilled MgH2 is controlled by a slow, random nucleation and growth process, which istransformed into two-dimensional growth after NiCl2 or CoCl2 doping, suggesting that theadditives reduced the barrier and lowered the driving forces for nucleation
Hydrogen storage, MgH2, Kinetics, Catalyst
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【期刊论文】The effect of a Ti-V-based BCC alloy as a catalyst on the hydrogen storage properties of MgH2
余学斌, X.B. Yu a, b, *, Z.X. Yang c, H.K. Liu a, D.M. Grant d, G.S. Walker d
interational journal of hydrogen energy 35(2010)6338-6344,-0001,():
-1年11月30日
The effect of Ti0.4Cr0.15Mn0.15V0.3 (termed BCC due to the body centered cubic structure) alloy on the hydrogen storage properties of MgH2 was investigated. It was found that the hydrogenated BCC alloy showed superior catalysis properties compared to the quenched and ingot samples. As an example, the 1 h milled MgH2 t 20 wt.% hydrogenated BCC shows a peak temperature of dehydrogenation of about 294℃. This is 16, 27 and 74℃ lower than those of MgH2 ball milled with quenched BCC, ingot BCC and an uncatalysed MgH2 sample, respectively. The hydrogenated BCC alloy is much easier to crush into small particles, and embed in MgH2 aggregates as revealed by X-ray diffraction and scanning electron microscope results. The BCC not only increases the hydrogen atomic diffusivity in the bulk Mg but also promotes the dissociation and recombination of hydrogen. The activation energy, Ea, for the dehydrogenation of the MgH2/hydrogenated BCC mixture was found to be 71.2 5 kJ mol H21 using the Kissinger method. This represents a significant decrease compared to the pure MgH2 (179.7 5 kJ mol H21), suggesting that the catalytic effect of the BCC alloy significantly decreases the activation energy of MgH2 for dehydrogenation by surface activation.
Hydrogen storage, MgH2, BCC, Catalysis
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【期刊论文】Reversible hydrogen storage in titanium-catalyzed LiAlH4-LiBH4 system
余学斌, J.F. Maoa, Z.P. Guoa, b, c, *, H.K. Liua, X.B. Yua, d, **
Journal of Alloys and Compounds 487(2009)434-438,-0001,():
-1年11月30日
We have investigated the hydrogen storage properties of the LiAlH4-LiBH4 system, both un-doped and doped with titanium based catalysts. It was found that TiF3 exhibited the superior catalytic effects in terms of enhancing the hydriding/dehydriding kinetics and reducing the dehydrogenation temperature of the LiAlH4-LiBH4 system. Compared to the un-doped LiAlH4-LiBH4 system, the onset temperatures of the 5mol% TiF3-doped sample for the first and second dehydrogenation steps were decreased by 64 and 150℃, respectively. X-ray diffraction patterns of the dehydrogenated samples revealed that the produced Al from LiAlH4 could react with B from the decomposition of LiBH4 to form AlB2 and LiAl compounds. Pressure-composition-temperature (PCT) and van’t Hoff plots made it clear that the decomposition enthalpy of LiBH4 in the TiF3-doped LiAlH4-LiBH4 system is decreased from 74 kJ/(mol of H2) for the pure LiBH4 to 60.4 kJ/(mol of H2). The dehydrogenation products of the TiF3-doped LiAlH4-LiBH4 sample can absorb 3.76 and 4.78 wt.% of hydrogen in 1h and 14h, respectively, at 600℃ and under 4MPa of hydrogen. The formation of LiBH4 was detected by X-ray diffraction in the rehydrogenated sample.
Lithium alanate, Lithium borohydride, Hydrogen storage, Ball milling, Catalyst doping
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【期刊论文】Enhanced hydrogen storage performances of NaBH4-MgH2 system
余学斌, J.F. Maoa, b, X.B. Yua, *, Z.P. Guob, c, d, **, H.K. Liub, Z. Wue, J. Nie
Journal of Alloys and Compounds 479(2009)619-623,-0001,():
-1年11月30日
The hydrogen storage properties of 2NaBH4 +MgH2 system were studied. It was found that the presence of MgH2 could destabilize the decomposition of NaBH4, decreasing the dehydrogenation temperature about 40℃ compared with the pure NaBH4. It is believed that the formation of MgB2 upon dehydrogenation stabilizes the dehydrogenated state and, thereby, destabilizes the NaBH4. For the desorption the following two-step reaction was observed: 2NaBH4 +MgH2→2NaBH4 +Mg+H2→2NaH +MgB2 +4H2. Furthermore, various catalysts such as TiF3, TiO2, Zr, Si and BCC alloy were doped to the NaBH4-MgH2 system. Among these catalysts, TiF3 exhibited the optimum behavior in terms of fast kinetics and lowering the dehydrogenation temperature of the NaBH4-MgH2 system. The rehydrogenation experiments of TiF3-doped NaBH4-MgH2 system were investigated at 600℃ with an initial hydrogen pressure of about 4MPa. It showed that 5.89 wt.% hydrogenwas rehydrogenated within 12 h. XRD results demonstrated the formation of NaBH4 and MgH2 in the rehydrogenated sample.
Sodium borohydride, Magnesium hydride, Hydrogen storage characteristics, Ball milling, Catalyst doping
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余学斌, X.B. Yua, *, Z. Wub, T.S. Huangb
Journal of Alloys and Compounds 476(2009)787-790,-0001,():
-1年11月30日
The hydrogen storage and electrochemical properties of the Ti0.32Mn0.22Cr0.1V0.28Nix (x=0, 0.05, 0.15, 0.2) alloyswere investigated. XRD results revealed that the addition of Ni resulted in the formation of C14 Laves phase. With the increasing Ni content, the lattice parameter a of BCC phase and the lattice parameter a and c of C14 Laves phase decreased. The Ni addition reduced the hydrogen absorption/desorption capacities at gas solid reaction, but improved the electrochemical discharge capacity significantly. The maximum discharge capacity of 392mAhg-1 was obtained for the Ti0.32Mn0.22Cr0.1V0.28Ni0.15 alloy. Cycling measurement revealed that the discharge capacity of the Ti0.32Mn0.22Cr0.1V0.28Ni0.15 alloy degraded with the increasing cycle number, decreasing to 63% of the maximum discharge capacity after 100 cycles. Further improvement on the activation and cycle life of this alloy can be achieved by surface modification with 20 wt.% LaNi3.55Co0.75Mn0.4Al0.3 addition.
BCC alloy, Hydrogen storage, Electrochemical performance, Surface modification
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【期刊论文】Enhanced hydrogen storage performance of LiBH4-Ni composite
余学斌, G.L. Xiaa, b, Y.H. Guoa, Z. Wub, X.B. Yua, *
Journal of Alloys and Compounds 479(2009)545-548,-0001,():
-1年11月30日
The hydrogen storage properties of LiBH4 ball milled with various ratios of Ni powders were investigated. It was found that Ni addition improved the dehydrogenation of LiBH4, resulting in the majority of hydrogen released from LiBH4 below 600℃. According to van't Hoff equation, the desorption enthalpy of LiBH4-Ni system was calculated to be H=-60.76 kJ mol-1 H2, which is similar to that of the pure LiBH4. Pressure-composition-temperature (PCT) results revealed that Ni addition accelerate the dehydrogenation rate of LiBH4. Furthermore, the LiBH4-Ni system could be reversed partly at 600℃ and 10MPa hydrogen pressure.
Hydrogen storage, LiBH4, Reversibility
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【期刊论文】A new Ti-Zr-Hf-Cu-Ni-Si-Sn bulk amorphous alloy with high glass-forming ability
余学斌, Y.J. Huanga, J. Shen a, *, J.F. Suna, X.B. Yu b
Journal of Alloys and Compounds 427(2007)171-175,-0001,():
-1年11月30日
The effect of Sn substitution for Cu on the glass-forming ability was investigated in Ti41.5Zr2.5Hf5Cu42.5-xNi7.5Si1Snx (x=0, 1, 3, 5, 7) alloys by using differential scanning calorimetry (DSC) and X-ray diffractometry. The alloy containing 5% Sn shows the highest glass-forming ability (GFA) among the Ti-Zr-Hf-Cu-Ni-Si-Sn system. Fully amorphous rod sample with diameters up to 6mm could be successfully fabricated by the copper mold casting Ti41.5Zr2.5Hf5Cu37.5Ni7.5Si1Sn5 alloy. The activation energies for glass transition and crystallization for Ti41.5Zr2.5Hf5Cu37.5Ni7.5Si1Sn5 amorphous alloy are both larger than those values for the Sn-free alloy. The enhancement in GFA and thermal stability after the partial replacement of Cu by Sn may be contributed to the strong atomic bonding nature between Ti and Sn and the increasing of atomic packing density. The amorphous Ti41.5Zr2.5Hf5Cu37.5Ni7.5Si1Sn5 alloy also possesses superior mechanical properties.
Bulk amorphous alloy, Glass-forming ability, Thermal stability, Titanium alloy
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余学斌, X. B. Yu, ab D. M. Granta and G. S. Walker*a
Chem. Commun., 2006, 3906-3908,-0001,():
-1年11月30日
A new dehydrogenation mechanism for LiBH4-MgH2 mixtures revealed that magnesium destabilised the LiBH4 resulting in complete dehydrogenation of the borohydride phase and the formation of a Li-Mg alloy.
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【期刊论文】Influence of Fe addition on hydrogen storage characteristics of Ti-V-based alloy
余学斌, X.B.Yu*, Z.X.Yang, S.L. Feng, Z.Wu, N.X. Xu
International Journal of Hydrogen Energy 31(2006)1176-1181,-0001,():
-1年11月30日
In order to improve the hydrogen storage properties and reduce the cost of Ti-V-based BCC alloys, the effect of Fe substitution for part V on hydrogen absorption-desorption characteristics of Ti-10Cr-18Mn-32V alloy was investigated. It was found that proper amount of Fe addition was effective in improving the activation performance, enhancing the hydrogen absorption-desorption plateau pressure, reducing the hysteresis of hydrogen absorption-desorption plateau, increasing the hydrogen desorption capacity and decreasing the alloy's cost, while it depressed the hydrogen absorption capacity. X-ray diffraction (XRD) patterns and back scattering electron (BSE) images display that the single BCC phase of Fe-free alloy transformed into two phases of, BCC and C14 Laves, of Fe-containing alloy. Three phase transformations happened in the two alloys during the hydrogen release process, which resulted from the formation of three different hydride phases in the two hydrided alloys.
Ti–V-based alloys, Microstructure, Hydrogen storage characteristics, Activation performance
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余学斌, X B Yu, , TDou, ZWu, B J Xia and J Shen
Nanotechnology 17(2006)268-271,-0001,():
-1年11月30日
A body-centred-cubic (bcc) phase Ti-30V-15Mn-15Cr alloy surface-modified with carbon black nanoparticles was prepared simply by ball milling. The composite showed significantly improved electrochemical hydrogen release capacities, reaching 930mA h g-1 at a discharge current of 45 mA g-1 at 353 K in the initial cycle. It is thought that this high capacity was due to the catalysis of carbon nanoparticles, which induced the Ti-30V-15Mn-15Cr alloy to release hydrogen more easily. These results provide a new insight into wide applications of Ti-V-based bcc phase alloys as high energy batteries.
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