| 硼的添加对Ti0.26Zr0.07V0.24Mn0.1Ni0.33贮氢合金结构和电化学性能的影响 |
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| 引用本文： | 李书存,赵敏寿,焦体峰.硼的添加对Ti0.26Zr0.07V0.24Mn0.1Ni0.33贮氢合金结构和电化学性能的影响[J].无机化学学报,2013,29(18). |
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| 作者姓名： | 李书存 赵敏寿 焦体峰 |
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| 作者单位： | 秦皇岛燕山大学环境与化学工程学院, 秦皇岛 066004;秦皇岛燕山大学亚稳材料制备技术与科学实验室, 秦皇岛 066004;秦皇岛燕山大学环境与化学工程学院, 秦皇岛 066004;中国科学院长春应用化学研究所稀土化学与物理重点实验室, 长春 130022;秦皇岛燕山大学环境与化学工程学院, 秦皇岛 066004 |
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| 基金项目： | 河北省自然科学基金(No.B2010001132)资助项目。 |
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| 摘 要： | Ti0.26Zr0.07V0.24Mn0.1Ni0.33Bx(x=0~0.10)系列合金均有V基固溶体相和C14型Laves相两相组成。添加B可提高Ti0.26Zr0.07V0.24 Mn0.1Ni0.33合金的放电容量, Ti0.26Zr0.07V0.24Mn0.1Ni0.33B0.1合金电极在60 mA·g-1电流放电时的放电容量达到476.7 mAh·g-1.B的添加不同程度地降低了合金的高倍率放电性能, 使合金电极表面上电化学反应的电荷转移电阻(Rct)显着增加, 交换电流密度(I0)显着降低。添加B可显着改善Ti0.26Zr0.07V0.24Mn0.1Ni0.33合金电极的高温放电性能, Ti0.26Zr0.07V0.24Mn0.1Ni0.33B0.025合金电极在343 K高温下其放电容量达到525.6 mAh·g-1.
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| 关 键 词： | 贮氢合金 电化学性能 硼 |
| 修稿时间： | 5/3/2013 12:00:00 AM |
Effect of Addition of Boron on Structure and Electrochemical Characteristic of Ti0.26Zr0.07V0.24Mn0.1Ni0.33 Alloy |
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| LI Shu-Cun,ZHAO Min-Shou and JIAO Ti-Feng.Effect of Addition of Boron on Structure and Electrochemical Characteristic of Ti0.26Zr0.07V0.24Mn0.1Ni0.33 Alloy[J].Chinese Journal of Inorganic Chemistry,2013,29(18). |
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| Authors: | LI Shu-Cun ZHAO Min-Shou and JIAO Ti-Feng |
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| Institution: | College of Environment and Chemical Engineering, Yanshan University, Qinhuangdao, Hebei 066004, China;State Key Laboratory of Metastable Material Science and Technology, Yanshan University, Qinhuangdao, Hebei 066004, China;College of Environment and Chemical Engineering, Yanshan University, Qinhuangdao, Hebei 066004, China;State Key Laboratory of Rare Earth on Advanced Materials and Valuable Utilization of Resources, Changchun Institute of Applied Chemistry, Chinese Academic of Science, Changchun 130022, China;College of Environment and Chemical Engineering, Yanshan University, Qinhuangdao, Hebei 066004, China |
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| Abstract: | The results show that all alloys are composed of V-based solid solution with body-centered-cube (BCC) structure and C14 Laves phase with hexagonal structure. The addition of B increases the discharge capacity of Ti0.26Zr0.07V0.24Mn0.1Ni0.33 alloy electrode and Ti0.26Zr0.07V0.24Mn0.1Ni0.33B0.1 alloy delivers the discharge capacity of 476.7 mAh·g-1at discharge current of 60 mA·g-1. The addition of B decreases the high-rate discharge ability of the alloy electrode in some extent. EIS indicates that addition of B decreases the dynamic performance, which makes the charge transfer resistance (Rct) increases and the exchange current density (I0) decreases markedly. Considerable improvement in the high-temperature dischargeability is observed by addition of B, and the discharge capacity is up to 525.6 mAh·g-1 at 343 K for Ti0.26Zr0.07V0.24Mn0.1Ni0.33B0.025 alloy electrode. |
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| Keywords: | hydrogen storage alloy electrochemical characteristics boron |
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