李国辉,黄红霞,王新颖,李银.AB3 型 Mm0.78 Mg0.22 Ni2.48 Mn0.09 Al0.23 Co0.47储氢合金的表面氟化处理[J].表面技术,2014,43(5):76-80.
LI Guo-hui,HUANG Hong-xia,WANG Xin-ying,LI Yin.Surface Fluorination Treatment of AB3-type Mm0.78Mg0.22Ni2.48Mn0.09Al0.23Co0.47 Hydrogen Storage Alloys[J].Surface Technology,2014,43(5):76-80 |
| AB3 型 Mm0.78 Mg0.22 Ni2.48 Mn0.09 Al0.23 Co0.47储氢合金的表面氟化处理 |
| Surface Fluorination Treatment of AB3-type Mm0.78Mg0.22Ni2.48Mn0.09Al0.23Co0.47 Hydrogen Storage Alloys |
| 投稿时间：2014-04-15 修订日期：2014-05-11 |
| DOI： |
| 中文关键词: 储氢合金 氟化处理 表面改性 电化学性能 |
| 英文关键词:hydrogen storage alloy fluorination treatment surface modification electrochemical properties |
| 基金项目:国家自 然科学基金( 11364013) ; 广西教育厅科研项目 ( 201203YB088) ; 广西矿冶与环境科学实验中心项目 ( KH2012YB002) ; 广西区大学生创新创业计划项目 ( 2013HSCX002) |
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| Author | Institution |
| LI Guo-hui | Guangxi Scientific Experiment Center of Mining, Metallurgy and Environment,Guilin University of Technology, Guilin 541004, China |
| HUANG Hong-xia | Guangxi Scientific Experiment Center of Mining, Metallurgy and Environment,Guilin University of Technology, Guilin 541004, China |
| WANG Xin-ying | Guangxi Scientific Experiment Center of Mining, Metallurgy and Environment,Guilin University of Technology, Guilin 541004, China |
| LI Yin | Guangxi Scientific Experiment Center of Mining, Metallurgy and Environment,Guilin University of Technology, Guilin 541004, China |
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| 中文摘要: |
| 目 的 提高 AB3 型储氢合金的电化学性能, 扩大其应用 范围 。 方法 运用 HF 和 NaF 组成的溶液对 AB3 型合金 Mm0.78Mg0.22Ni2.48 Mn0.09Al0.23 Co0.47( Mm 由 82. 3% La 和 17. 7% Nd( 均 为 原子数分数) 组成) 进行表面处理, 考察改性处理对合金相结构、电化学性能以及动力学性能的影响。 结果 氟化处理后有 MgF2 相生成, 合金电极的最大放电容量得到提高,50 次循环后的容量保持率由 83. 3% 提高到92. 8% 。此外, 合金的动力学性能也得到一定改善。 结论 氟化处理改变了 合金的 表面结构, 提高了 其电 化学性 |
| 英文摘要: |
| Objective To improve the electrochemical properties of AB3-type hydrogen storage alloy. Methods The AB3 -type Mm0.78Mg0.22Ni2.48Mn0.09Al0.23 Co0.47( Mm consisted of 82. 3% La and 17. 7% Nd) alloy was modified by a solution consisting of HF and NaF. The effects of surface treatment on the phase structure, electrochemical properties and kinetic properties of the alloy were systematically investigated. Results XRD results showed that MgF2 was formed on the surface of the alloy particles after fluorination treatment. The maximum discharge capacity was enhanced and the capacity retention rate C50 /Cmax increased from the original 83. 3% to 92. 8% . Furthermore, the kinetic properties of the alloy electrode were also improved. Conclusion The phase structure of the alloy was changed after fluorination treatment, and the electrochemical properties of the alloy were improved. |
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