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| 1 | 超点阵R-Mg-Ni基合金结构和储氢特性研究现状显示文摘由Laves型[A2B4]和Ca Cu5型[AB5]亚单元以一定比率沿c轴有序堆垛而成的超点阵R-Mg-Ni基储氢合金(R=稀土元素、Ca元素),因具有储氢容量高、可逆性好以及动力学与热力学行为温和可控等优势被认为是新一代镍氢电池最理想的候选负极材料。本文介绍了超点阵R-Mg-Ni基合金的结构特点和储氢特性,着重阐述了结构、Mg元素及氢化行为三者之间的关系,并指出了这类合金在储氢机制方面需要进一步探究的关键性问题。 | 陈子亮 李永涛 张庆安 | 2015 | 功能材料2015，46，10： | 5 |
| 2 | Microstructure and electrochemical properties of La0.8-xMMxMg0.2Ni3.1Co0.3Al0.1(x=0,0.1,0.2,0.3)alloys显示文摘The present study aims to improve electrochemical properties of the La-Mg-Ni-based hydrogen storage alloys through partial substitution for La by mischmetal(MM).The La_(0.8-x)MM_xMg_(0.2)Ni_(3.1)Co_(0.3)Al_(0.1)(x=0,0.1,0.2,0.3)alloys were prepared by inductive melting,and their phase structures and electrochemical properties were studied by X-ray diffraction(XRD),scanning electron microscope(SEM),energy-dispersive X-ray spectrometry(EDX)and electrochemical tests.Results show that the alloys mainly consist of La_2Ni_7-type phase,La_5Ni_(19)-type phase,LaNi_5-type phase and LaNi_3-type phase.The addition of MM does not change the phase compositions,while it leads to more uniform phase distribution and obviously promotes the formation of La_2Ni_7-type phase which possesses favorable electrochemical properties.Electrochemical studies indicate that the substitution for La by MM could effectively improve the high rate dischargeability(HRD)of the alloy electrode,and the optimal value of HRD_(1500)(HRD at 1500 mA·g^(-1))increases from 40.63%(x=0)to 60.55%(x=0.3).Although the activation properties of the alloy electrodes keep almost unchanged,both the maximum discharge capacity(C_(max))and the cycling stability are significantly improved by MM addition. | Na Zhou Wen-Bo Du Pei-Long Zhang Yong-Guo Zhu Zhao-Hui Wang Ke Liu Shu-Bo Li | 2017 | Rare Metals2017，36，8： | 2 |
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