| 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 |
| Effect of Addition of Boron on Structure and Electrochemical Characteristic of Ti0.26Zr0.07V0.24Mn0.1Ni0.33 Alloy |
| 作者 | 单位 | E-mail | | 李书存 | 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 | | | 赵敏寿 | 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 | lsc111213@sohu.com | | 焦体峰 | College of Environment and Chemical Engineering, Yanshan University, Qinhuangdao, Hebei 066004, China | |
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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Ti0.26Zr0.07V0.24Mn0.1Ni0.33合金的放电容量,Ti0.26Zr0.07V0.24Mn0.1Ni0.33B0.1合金电极在60mA·g-1电流放电时的放电容量达到476.7mAh·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)显著增加,交换电流密度(I0)显著降低。添加B可显著改善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343K高温下其放电容量达到525.6mAh·g-1。 |
| 关键词: 贮氢合金 电化学性能 硼 |
| 基金项目: 河北省自然科学基金(No.B2010001132)资助项目 |
| 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 Bincreases 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 Bdecreases the high-rate discharge ability of the alloy electrode in some extent. EISindicates that addition of Bdecreases 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 Kfor Ti0.26Zr0.07V0.24Mn0.1Ni0.33B0.025 alloy electrode. |
| Keywords: hydrogen storage alloy electrochemical characteristics boron |
| 投稿时间：2013-01-19 修订日期：2013-05-03 |
| 摘要点击次数: 1517 |
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| 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(10):2119-2125. |
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