| Mm0.78Mg0.22Ni2.48Mn0.09Al0.23Co0.47储氢合金的表面改性 |
| Surface Modification of Mm0.78Mg0.22Ni2.48Mn0.09Al0.23Co0.47 Hydrogen Storage Alloy |
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| 摘要: 为了提高AB3型合金Mm0.78Mg0.22Ni2.48Mn0.09Al0.23Co0.47(Mm由82.3% La和17.7% Nd组成)的电化学性能，将石墨烯添加到合金中。通过XRD和SEM可以看出，石墨烯并没有改变合金的相结构，仅是简单地附在合金表面。当加入质量分数为2%的石墨烯时，合金电极的最大放电容量Cmax达到364.9 mAh·g-1。石墨烯的添加加速了合金表面的电化学反应。 |
| 关键词: 储氢合金 石墨烯 表面处理 电化学性能 |
| 基金项目: 国家自然科学基金（No.11364013）；广西矿冶与环境科学实验中心项目（No.KH2012YB002）资助。 |
| Abstract: AB3 type Mm0.78Mg0.22Ni2.48Mn0.09Al0.23Co0.47 (Mm of 82.3% La and 17.7% Nd composition) hydrogen storage alloy was modified by adding graphene to improve its electrical chemical properties. XRD and SEM indicated the phase structure of the alloy did not change, but graphene was covered the surface of the alloy. When adding a mass fraction of 2% of graphene, the maximum discharge capacity Cmax of the alloy electrode reached 364.9 mAh·g-1. Graphene accelerated the electrochemical reaction of alloy surface. |
| Keywords: hydrogen storage alloy graphene surface modification electrochemical properties |
| 投稿时间：2016-01-18 修订日期：2016-04-18 |
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| 李国辉,黄红霞,王新颖,谢文强.Mm0.78Mg0.22Ni2.48Mn0.09Al0.23Co0.47储氢合金的表面改性[J].无机化学学报,2016,32(8):1358-1362. |
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