| 固溶体MAX相(Ti0.5V0.5)3AlC2的制备及其对MgH2储氢性能的催化影响 |
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| 引用本文： | 张欣,沈正阳,简旎,姚建华,高明霞,潘洪革,刘永锋.固溶体MAX相(Ti0.5V0.5)3AlC2的制备及其对MgH2储氢性能的催化影响[J].无机化学学报,2019,35(1):101-108. |
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| 作者姓名： | 张欣 沈正阳 简旎 姚建华 高明霞 潘洪革 刘永锋 |
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| 作者单位： | 浙江工业大学激光先进制造研究院浙江省高端激光制造装备协同创新中心;硅材料国家重点实验室浙江省电池新材料及应用技术重点实验室浙江大学材料科学与工程学院 |
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| 基金项目： | 国家自然科学基金（No.51671172，U1601212）和浙江省杰出青年科学基金（No.LR16E010002）资助项目。 |
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| 摘 要： | 通过无压烧结法制备了固溶体MAX相(Ti_(0.5)V_(0.5))_3AlC_2,研究了其添加对MgH_2储氢性能的影响。结果发现,固溶体MAX相(Ti_(0.5)V_(0.5))_3AlC_2中的Ti和V元素通过协同作用,呈现出更高的催化活性。添加质量分数10%(Ti_(0.5)V_(0.5))_3AlC_2的MgH_2样品的起始放氢温度为230℃,较原始MgH_2降低了60℃。在275℃下等温放氢,(Ti_(0.5)V_(0.5))_3AlC_2添加样品的放氢速率可达0.35%·min~(-1),是原始MgH_2样品的4倍左右。此外,完全放氢后的MgH_2-10%(Ti_(0.5)V_(0.5))_3AlC_2样品在150℃、5 MPa氢压下,可在60 s内吸收4.7%的氢。计算显示,MgH_2-10%(Ti_(0.5)V_(0.5))_3AlC_2样品的表观活化能为79.6 kJ·mol~(-1),较原始MgH_2(153.8 kJ·mol~(-1))降低了48%,这是MgH_2放氢性能得到改善的主要原因。
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| 关 键 词： | 储氢材料 金属氢化物 MgH2 催化剂添加 固溶体MAX相 |
| 收稿时间： | 2018/10/11 0:00:00 |
| 修稿时间： | 2018/11/25 0:00:00 |
Synthesis and Catalytic Effects of Solid-Solution MAX-phase (Ti0.5V0.5)3AlC2 on Hydrogen Storage Performance of MgH2 |
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| ZHANG Xin,SHEN Zheng-Yang,JIAN Ni,YAO Jian-Hu,GAO Ming-Xi,PAN Hong-Ge and LIU Yong-Feng.Synthesis and Catalytic Effects of Solid-Solution MAX-phase (Ti0.5V0.5)3AlC2 on Hydrogen Storage Performance of MgH2[J].Chinese Journal of Inorganic Chemistry,2019,35(1):101-108. |
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| Authors: | ZHANG Xin SHEN Zheng-Yang JIAN Ni YAO Jian-Hu GAO Ming-Xi PAN Hong-Ge and LIU Yong-Feng |
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| Institution: | Institute of Laser Advanced Manufacturing, Zhejiang University of Technology, Collaborative Innovation Center of High-end Laser Manufacturing Equipment, Hangzhou 310014, China;State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China,State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China,State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China,Institute of Laser Advanced Manufacturing, Zhejiang University of Technology, Collaborative Innovation Center of High-end Laser Manufacturing Equipment, Hangzhou 310014, China,State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China,State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China and State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China |
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| Abstract: | |
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| Keywords: | hydrogen storage materials metal hydride MgH2 catalyst doping solid-solution MAX phase |
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