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Rare Metals 2014年第6期33卷 663-673页

作者： Yang-Huan Zhang Tai Yang hong-wei shang Chen Zhao Chao Xu Dong-Liang Zhao Key Laboratory of Integrated Exploitation of Baiyun Obo Multi-Metal Resources Inner Mongolia University of Science and Technology Department of Functional Material Research Central Iron and Steel Research Institute

In this paper, we comprehensively investigate the influences of M（M=Cu, Co, Mn） substitution for Ni on the structures and electrochemical hydrogen storage characteristics of the nanocrystalline and amorphous Mg20Ni10-xMx（M=Cu, Co, Mn; x = 0–4） alloys prepared by melt spinning. The as-spun（M=None, Cu） alloys display an entire nanocrystalline structure, whereas the as-spun（M=Co, Mn） alloys hold a mixed structure of both nanocrystalline and amorphous when x = 4（M content）. These results indicate that the substitution of M（M=Co, Mn） for Ni facilitates the glass formation in Mg2Ni-type alloy. All the as-spun alloys have the Mg2 Ni major phase, but M（M=Co, Mn） substitution brings on some secondary phases,such as Mg Co2, Mg phases for M=Co, and Mn Ni, Mg phases for M=Mn. The substitution of M（M=Cu, Co, Mn）for Ni also makes a positive contribution to the cycle stability of the alloys in the following orders：（M=Cu） [（M=Co） [（M=Mn） for x = 1 and（M=Co） [（M=Mn）[（M=Cu） for x = 2–4. Meanwhile, it notably enhances the discharge capacity of the alloys in the sequence of（M=Co） [（M=Mn） [（M=Cu）. As for the high rate discharge ability, it visibly upgrades with the growing of M content for（M=Cu, Co）, while it grows at first and then declines for（M=Mn）.

关键词： Mg2Ni-type alloy Element substitution Melt spinning Nanocrystalline and amorphous Electrochemical characteristics

Structures and electrochemical performances of as-cast and spun RE-Mg-Ni-Mn-based alloys applied to Ni-MH battery

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Journal of Iron and Steel Research International 2017年第3期24卷 296-305页

作者： Yang-huan Zhang Zhong-hui Hou Ying Cai hong-wei shang Yan Qi Dong-liang Zhao Key Laboratory of Integrated Exploitation of Baiyun Obo Multi-Metal Resources Inner Mongolia University of Science and Technology Department of Functional Material Research Central Iron and Steel Research Institute

The RE-Mg-Ni-Mn-based AB2-type La（1-x）CexMgNi（3.5）Mn（0.5）（ x = 0- 0. 4） alloys were prepared by spinning treatment. For obtaining the optimum performance,the effects of Ce content and spinning rate on the hydrogen storage performance of the alloys were studied systematically. The results show that the variations of the spinning rate and Ce content result in noteworthy changes of the phase content without altering phase composition of the alloys. Specifically,the LaMgNi4 phase increases and LaNi5 phase decreases when increasing the spinning rate and Ce content. Furthermore,the crystalline grains of Cecontaining alloys prepared by spinning treatment are remarkably refined. The alloys own superior electrochemical performance. All alloys reach the optimal discharge capacity at the initial cycle. Increasing Ce content and spinning rate lead the discharge capacity and electrochemical kinetics rise to an optimal value and then start to reduce. Meanwhile,the electrochemical cycle stability is also improved,which is ascribed to the great enhancement of anti-pulverization and anti-corrosion abilities resulting from the spinning treatment and the substitution of Ce for La.

关键词： AB2-type alloy Substitution Spinning treatment Electrochemical kinetics Cycle stability Ni-MH battery

Hydrogen storage thermodynamic and kinetic characteristics of PrMg12-type alloys synthesized by mechanical milling

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Journal of Iron and Steel Research International 2017年第2期24卷 198-205页

作者： Jin-liang Gao Yan Qi Ya-qin Li hong-wei shang Dong-liang Zhao Yang-huan Zhang weishan Cisri-Eare Earth Materials Co. Ltd. Jining 277600 Shandong China Department of Functional Material Research Central Iron and Steel Research Institute Beijing 100081 China

To improve the hydrogen storage performance of PrMg12-type alloys, Ni was adopted to replace partially Mg in the alloys. The PrMgllNi＋x wt.% Ni （x=100, 200） alloys were prepared via mechanical milling. The phase structures and morphology of the experimental alloys were in vestigated by X-ray diffraction and transmission electron microscopy. The results show that increasing milling time and Ni content accelerate the formation of nanocrystalline and amorphous structure. The gaseous hydrogen storage properties of the experimental alloys were determined by differential scanning calorimetry （DSC） and Sievert apparatus. In addition, increasing milling time makes the hydrogenation rates of the alloys augment firstly and decline subsequently and the dehydrogenation rate always increases. The maximum capacity is 5. 572 wt. % for the x = 100 alloy and 5. 829 wt. % for the x = 200 alloy, respectively. The enthalpy change （ △H ）, entropy change （△S） and the dehydrogenation activation energy （Exde） markedly lower with increasing the milling time and the Ni content due to the generation of nanocrystalline and amorphous structure.

关键词： PrMg12 alloy Mechanical milling Activation energy Hydrogen storage dynamics Thermodynamics

Electrochemical performances of as-cast and annealed La_(0.8-x)Nd_xMg_(0.2)Ni_(3.35)Al_(0.1)Si_0.05(x=0-0.4) alloys applied to Ni/metal hydride (MH) battery

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Rare Metals 2013年第2期32卷 150-158页

作者： Yang-Huan Zhang Hui-Ping Ren Tai Yang Chen Zhao Li-Cui Chen hong-wei shang Dong-Liang Zhao Key Laboratory of Integrated Exploitation of Baiyun Obo Multi-Metal Resources Inner Mongolia University of Science and Technology Department of Functional Material Research Central Iron and Steel Research Institute

The La-Mg-Ni-based A2B7-type Lao.8_xNdx ***.o5 （x = 0, 0.1, 0.2, 0.3, and 0.4） electrode alloys were prepared by casting and annealing. The influence of the partial substitution of Nd for La on the structure and electrochemical performances of the alloys was investigated. The structural analysis of X-ray diffraction and scanning electron microscopy reveals that the experimental alloys consist of two major phases：（La,Mg）2Ni7 with the hexagonal Ce2Ni7-type structure and LaNi5 with the hexagonal CaCus-type structure as well as some residual phases of LaNi3 and NdNis. The electrochemical measurements indicate that an evident change of the electrochemical performance of the alloys is associated with the substitution of Nd for La. The discharge capacity of the alloy first increases then decreases with the growing Nd content, whereas their cycle stability clearly grows all the time. Furthermore, the measurements of the high rate discharge ability, the limiting current density, and hydrogen diffusion coefficient all demonstrate that the electrochemical kinetic properties of the alloy electrodes first augment then decline with the rising amount of Nd substitution.

关键词： A2B7-type electrode alloy Substitution Lawith Nd Structure Electrochemical performance

Improved hydrogen storage performance of as-milled Sm-Mg-Ni alloy by adding CeO2

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Journal of Iron and Steel Research International 2018年第12期25卷 1255-1264页

作者： Yang-huan Zhang Kai-feng Zhang Ze-ming Yuan Ya-qin Li hong-wei shang Yan Qi Xiao-ping Dong Dong-liang Zhao Key Laboratory of Integrated Exploitation of Baiyun Obo Multi-Metal Resources Inner Mongolia University of Science and TechnologyBaotou 014010Inner Mongolia China Department of Functional Material Research Central Iron and Steel Research InstituteBeijing 100081China Department of Mechanical Engineering Hebei University Baoding 071002HebeiChina

To investigate the influence of adding CeO2 on the hydrogen storage characteristics of Sm-Mg-Ni-based SmMg11Ni-type alloy,mechanical milling was utilized to synthesize SrnMg11Ni and SmMg11Ni +5 wt.%CeO2 (named SmMg11Ni- 5CeO2)*** microstructure of as-castand as-milled samples was measured via X-ray diffractometer and transmission electron *** device was utilized to measure the isothermal hydriding and dehydriding kinetics. The non-isothermal dehydrogenation performance was explored by thermogravimetry and differential scanning *** hydrogen desorption activation energy of the compound metal hydride can be computed by both Arrhenius and Kissinger *** related data show that adding CeO2 can engender a very slight influence on the hydrogen storage thermodynamics,but it can result in an obvious reduction in hydrogen absorption and desorption ***,the hydrogen desorption performance of experimental alloys is conspicuously ameliorated by the addition of CeO2,*** the initial hydrogen desorption temperature and enhancing hydrogen desorption *** hydrogen desorpfion activation energies with and without CeO2 addition are 84.28 and 100.31 kJ/mol,respectively,with an obvious decrease of 16.03 kJ/*** is thought to be responsible for the ameliorated hydrogen desorption kinetics by adding CeO2.

关键词： Mg-based alloy Mechanical milling Activation energy Catalysis Hydrogen storage kinetics

PbSe量子点荧光匹配气体吸收光谱方法研究

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光谱学与光谱分析 2016年第11期36卷 3588-3591页

作者：邢笑雪秦宏伍商微微长春大学电子信息工程学院吉林长春130012

PbSe量子点（PbSe-QDs）是红外波段的典型纳米材料,其具有大的玻尔半径、小的体材料禁带宽度（玻尔半径是46nm,体材料禁带宽度是0.28eV）,因此,在近红外区域,PbSe-QDs具有强大的尺寸受限效应和较高的量子产出率。本文对不同尺寸的PbSe... 详细信息

PbSe量子点（PbSe-QDs）是红外波段的典型纳米材料,其具有大的玻尔半径、小的体材料禁带宽度（玻尔半径是46nm,体材料禁带宽度是0.28eV）,因此,在近红外区域,PbSe-QDs具有强大的尺寸受限效应和较高的量子产出率。本文对不同尺寸的PbSe量子点的荧光光谱特性进行了研究,提出了一种通过调节PbSe量子点的量子尺寸匹配气体吸收光谱的方法。采用配位溶剂的方法制备了尺寸为4.6和6.1nm的PbSe量子点,将该PbSe量子点沉积到GaN发光芯片上并经过紫外光照处理和固化后制成了光致发光的近红外光源,其中4.6nm的PbSe-QDs的沉积厚度为671.5μm,而6.1nm的PbSe-QDs的沉积厚度为48μm。将制成的近红外光源应用到C2H2气体和NH3气体的检测实验中,实验结果表明,通过改变PbSe量子点的尺寸可以调节光源光致发光峰的位置,从而覆盖目标气体在近红外波段的吸收谱线。4.6nm的光源发射光谱包含了1 500~1 550nm之间的C2H2气体的全部的吸收谱;6.1nm的光源发射光谱包含了1 900~2 060nm之间的NH3气体的全部的吸收谱。这种利用PbSe量子点尺寸的可调性匹配对应气体吸收谱的方法是可行和有效的,具有广阔的应用前景。

关键词：光致发光 PbSe量子点近红外光源光谱匹配

Electrochemical hydrogen storage performance of as-cast and as-spun RE-Mg-Ni-Co-Al-based alloys applied to Ni/MH battery

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Transactions of Nonferrous Metals Society of China 2018年第4期28卷 711-721页

作者： Yang-huan ZHANG Ya-qin LI hong-wei shang Zhong-hui HOU Yan QI Dong-liang ZHAO Key Laboratory of Integrated Exploitation of Baiyun Obo Multi-metal Resources Inner Mongolia University of Science and TechnologyBaotou 014010China Department of Functional Material Research Central Iron and Steel Research InstituteBeijing 100081China Institute for Advanced Materials and Technology University of Science and Technology BeijingBeijing 100083China

The La-Mg-Ni-Co-Al-based AB2-type La0.8-xCe0.2YxMgNi3.4Co0.4Al0.1(x=0,0.05,0.1,0.15,0.2)alloys were prepared via melt *** analyses of the X-ray diffraction(XRD)and scanning electron microscopy(SEM)proved that the experimental alloys contain the main phase LaMgNi4 and the second phase *** Y content and spinning rate lead to grain refinement and obvious change of the phase abundance without changing phase composition.Y substitution for La and melt spinning make the life-span of the alloys improved remarkably,which is attributed to the improvement of anti-oxidation,anti-pulverization and anti-corrosion *** addition,the discharge capacity visibly decreases with increasing the Y content,while it firstly increases and then decreases with increasing spinning *** electrochemical kinetics increases to the optimum performance and then reduces with increasing spinning ***,all the alloys achieve to the highest discharge capacities just at the initial cycle without activation.

关键词： Y La substitution spinning rate life-span discharge capacity electrochemical kinetics

Hydrogen storage behavior of nanocrystalline and amorphous La-Mg-Ni-based LaMg_(12)-type alloys synthesized by mechanical milling

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Transactions of Nonferrous Metals Society of China 2017年第3期27卷 551-561页

作者： Yang-huan ZHANG Long-wen LI Dian-chen FENG Peng-fei GONG hong-wei shang Shi-hai GUO Key Laboratory of Integrated Exploitation of Baiyun Obo Multi-metal Resources Inner Mongolia University of Science and Technology Baotou 014010 China Department of Functional Material Research Central Iron and Steel Research Institute Beijing 100081 China School of Materials Science and Engineering University of Science and Technology Beijing Beijing 100083 China

Nanocrystalline and amorphous LaMg11Ni+x%Ni(x=100,200,mass fraction)alloys were synthesized by *** electrochemical hydrogen storage properties of the as-milled alloys were tested by an automatic galvanostatic *** gaseous hydrogen absorption and desorption properties were investigated by Sievert’s apparatus and differential scanningcalorimeter(DSC)connected with a *** results indicated that increasing Ni content significantly improves the gaseousand electrochemical hydrogen storage performances of the as-milled *** gaseous hydrogen absorption capacities andabsorption rates of the as-milled alloys have the maximum values with the variation of the milling *** the hydrogen desorptionkinetics of the alloys always increases with the extending of milling *** addition,the electrochemical discharge capacity andhigh rate discharge(HRD)ability of the as-milled alloys both increase first and then decrease with milling time prolonging.

关键词： Ni-MH battery hydrogen storage alloy mechanical milling discharge capacity kinetics

A ruptured pulmonary arteriovenous fistula after laparoscopic operation

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Chinese Journal of Traumatology 2017年第6期20卷 359-361页

作者： hong-wei shang Sheng-Bin Sun Guang-Yao Ma Xing-Ming Mei Chao Li Kang Yang Department of Cardiothoracic Surgery Chinese PLA No. 254 Hospital Tianjin China Department of Pathology Chinese PLA No.254 Hospital Tianjin China

Pulmonary arteriovenous fistula （PAVF） is a rare anomaly in the lung, and hemothorax or massive nemoptysis due to spontaneous rupture of the fistula sac is even rarer. The patient described here was a 47- year-old woman who presented with massive hemoptysis resulting from the rupture of her PAVF just after laparoscopic operation. To our knowledge, this may be the first case ever reported that the rupture of PAVF may be correlated with a laparoscopic operation. The patient survived without adverse events after emergency pulmonary lohectomy.

关键词： Ruptured Pulmonary arteriovenous fistula Laparoscopic

Impacts of Melt Spinning and Element Substitution on Electrochemical Characteristics of the La–Mg–Ni-based A<sub>2</sub>B<sub>7</sub>-Type Alloys

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Advances in Materials Physics and Chemistry 2012年第4期2卷 78-83页

作者： Yang-huan Zhang hong-wei shang Ying Cai Zhong-hui Hou Guo-fang Zhang Dong-liang Zhao Department of Functional Material Research Central Iron and Steel Research Institute Beijing China Inner Mongolia University of Science and Technology Baotou China Key Laboratory of Integrated Exploitation of Baiyun Obo Multi-Metal Resources

The partial substitution of Zr for La has been performed in order to ameliorate the electrochemical hydrogen storage performances of La–Mg–Ni based A2B7-type electrode alloys. The melt spinning technology was used to prepare the La0.75-xZrxMg0.25Ni3.2Co0.2Al0.1 (x=0, 0.05, 0.1, 0.15, 0.2) electrode alloys. The impacts of the melt spinning and the substituting La with Zr on the structures and the electrochemical hydrogen storage characteristics of the alloys were systemically investigated. The analysis of XRD and TEM reveals that the as-cast and spun alloys have a multiphase structure, composing of two main phases (La, Mg)2Ni7 and LaNi5 as well as a residual phase LaNi2. The electrochemical measurement indicates that both the substitution of Zr for La and the melt spinning ameliorate the electrochemical cycle stability of the alloys dramatically. Furthermore, the high rate discharge ability (HRD) of the as-spun (10 m/s) alloys notably declines with growing the amount of Zr substitution, while it first augments and then falls for the (x=0.1) alloy with rising the spinning rate.

关键词： A2B7-Type Alloy Substituting La with Zr Melt-Spinning Electrochemical Characteristics