LI Xiaofeng*,MENG Fang,DONG Huichao,et al.Electrodeposited Preparation of Bi-Doped Metal Zinc and Its Performance Characterization[J].Plating & Finishing,2020,(1):12-17.[doi:10.3969/j.issn.1001-3849.2020.01.003]
电沉积法制备掺铋金属锌及其性能表征
- Title:
- Electrodeposited Preparation of Bi-Doped Metal Zinc and Its Performance Characterization
- Keywords:
- electrodeposition; metal zinc electrode; Bi?doped
- 文献标志码:
- A
- 摘要:
- 以铜片为基体，分别在酸性或碱性镀液中电沉积得到掺铋的金属锌电极。采用X射线衍射（XRD）、电感耦合等离子光谱（ICP）和扫描电子显微镜（SEM）等测试手段对制备的材料进行了表征。结果表明，在碱性镀液中添加Bi离子并不能从根本上改变金属锌疏松的树枝状沉积形态，随着镀液中Bi含量的增加，沉积层中的金属铋含量几乎不发生变化；而在酸性镀液中添加Bi离子后，金属锌由致密的树枝状沉积改变为颗粒状沉积，且随着镀液中Bi含量的增加，金属铋在锌沉积层中的含量线性增加。后者能够在一定程度上提高二次锌负极在1 mol·L-1 ZnSO4溶液中的放电容量并改善其循环性能，这可能得益于金属锌结晶形态的改变。
- Abstract:
- Bismuth-doped metal zinc electrode was prepared on the copper substrate by electrodeposition in acidic or alkaline bath, respectively. X-ray diffraction (XRD), inductively coupled plasma spectroscopy (ICP) and scanning electron microscope (SEM) tests were used to characterize the performance of the prepared materials. The results show that the dendritic deposition morphology of loose zinc metal can not be changed fundamentally by the addition of Bi ions into alkaline bath, and the Bi content in the deposit layer hardly changes with the increase of Bi content in the bath. On the contrary, the dendritic deposition morphology of dense metal zinc changes to granular deposit with the addition of Bi ions in acidic bath, and the Bi content in the deposit layer increases linearly with the increase of Bi content in the bath. The latter can improve the discharge capacity and cycle performance of secondary zinc anode in 1 mol·L-1 ZnSO4 solution to a certain extent, which may be due to the crystalline morphology change of zinc metal.
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备注/Memo
收稿日期： 2019-07-15；修回日期： 2019-08-11
通信作者： 李晓峰， email: lixiaofeng630@163.com
基金项目： 河南省科技攻关项目（182102210163）