Electrodeposited Iridium Oxide on Platinum Nanocones for Improving Neural Stimulation Microelectrodes
文献类型：期刊论文
| 作者 | Qi Zeng; Kai Xia; Bin Sun; Youlin Yin; Tianzhun Wu; Mark S. Humayuna |
| 刊名 | Electrochimica Acta
 |
| 出版日期 | 2017 |
| 文献子类 | 期刊论文 |
| 英文摘要 | Microelectrodes for electrical neural stimulation play an important role in various medical and brain science applications, however, the shrinking size of microelectrodes leads to high electrode/tissue interfacial impedance and low charge injection capacity (CIC). In order to achieve safe, efficient and durable electrode performances, we proposed a layer-by-layer electrodeposition method to modify the bare platinum (Pt) microelectrodes. Combining the advantages of platinum gray (Pt gray) with iridium oxide (IrOx), herein a low impedance and high charge injection IrOx/Pt gray microelectrode was fabricated with nanoscale roughness. Morphological tests showed that nanocone-shaped Pt gray provided large effective surface area and hence good adhesion for dense IrOx deposition, which was beneficial for long-term mechanical stability of the composite coating. A typical microelectrode sample with the nanostructured IrOx/Pt gray coating had a low impedance down to 2.45 kV cm2 at 1 kHz, and a cathodic charge storage capacity (CSCc) up to 22.29 mC cm 2, which was about 6, 2.8 and 2.7 times higher than CSCc of those samples coated with bare Pt, Pt gray and IrOx, respectively. Furthermore, it demonstrated superior mechanical, electrochemical stability and CIC. These achievements indicate that composite coatings with well-controlled nanostructures may greatly enhance the performances of neural electrodes for various applications. |
| URL标识 | 查看原文 |
| 语种 | 英语 |
| 源URL | [http://ir.siat.ac.cn:8080/handle/172644/12021]  |
| 专题 | 深圳先进技术研究院_医工所 |
| 作者单位 | Electrochimica Acta |
| 推荐引用方式 GB/T 7714 | Qi Zeng,Kai Xia,Bin Sun,et al. Electrodeposited Iridium Oxide on Platinum Nanocones for Improving Neural Stimulation Microelectrodes[J]. Electrochimica Acta,2017. |
| APA | Qi Zeng,Kai Xia,Bin Sun,Youlin Yin,Tianzhun Wu,&Mark S. Humayuna.(2017).Electrodeposited Iridium Oxide on Platinum Nanocones for Improving Neural Stimulation Microelectrodes.Electrochimica Acta. |
| MLA | Qi Zeng,et al."Electrodeposited Iridium Oxide on Platinum Nanocones for Improving Neural Stimulation Microelectrodes".Electrochimica Acta (2017). |
入库方式： OAI收割
来源：深圳先进技术研究院
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