| 摘要: |
| 在低共熔型离子液体氯化胆碱-乙二醇(ChCl-EG)体系下对镍钴(Ni-Co)合金共沉积行为进行研究。 采用循环伏安法(CV)、计时电流法(CA)研究 Ni-Co 合金在 ChCl-EG 中的电化学行为,通过傅里叶红外光谱(FT-IR)对 ChCl- EG 及添加不同金属盐的体系进行红外吸收分析,使用扫描电子显微镜( SEM/ EDS)分析 Ni-Co 合金微观形貌及元素组成,结合 X 射线衍射仪(XRD)对 Ni-Co 合金进行物相分析。 结果表明:ChCl-EG 体系是以胆碱结构和氢键结构形式存在;70 ℃下,ChCl-EG 体系中 Ni-Co 合金的还原电位范围为 -0. 6~ -1. 13 V,而 Ni-Co 合金形核过程遵循三维成核生长规律;在恒电位下制备得到的 Ni-Co 合金微观形貌为均匀致密的球形晶粒,且通过控制电位可以得到不同 Co 含量的 Ni-Co 合金镀层。 |
| 关键词: 离子液体 镍钴合金 循环伏安法 电结晶机理 |
| DOI：10.11933/j.issn.1007-9289.20190510003 |
| 分类号:TQ153.19 |
| 文章编号:1007-9289(2020)02-0057-08 |
| 文献标识码:A |
| 基金项目: |
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| Co-deposition Behavior of Ni-Co Alloy in Deep Eutectic Solvent |
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Li Wenruo1, Hao Jianjun1, Mou Shihui2
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1.School of Environmental and Chemical Engineering, Shengyang Ligong University, Shengyang 110159 , China;2.School of Materials Science and Engineering, Shengyang Ligong University, Shengyang 110159 , China
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| Abstract: |
| The co-deposition behavior of nickel-cobalt (Ni-Co) alloy was studied in deep eutectic solvent of the choline chlo- ride-ethylene glycol (ChCl-EG) system. Cyclic voltammetry (CV) and chronoamperometry (CA) were measured to study the electrochemical behavior of Ni-Co alloy in ChCl-EG. The infrared absorption of ChCl-EG and ChCl-EG containing different metal salts were analyzed by fourier transform infrared spectroscopy (FT-IR). The microstructure and elemental composition of Ni-Co alloy were characterized by scanning electron microscopy (SEM/ EDS) and the crystalline phases of Ni-Co alloy was detected by X-ray diffractometry (XRD). Results show that the ChCl-EG system has two structures of choline structure and hydrogen bond structure. At 70℃ , the reduction potential of Ni-Co alloy in ChCl-EG system is -1. 13 V~ -0. 6 V. The nucleation process of Ni-Co alloy is a three-dimensional nucleation and growth. The grains of the Ni-Co alloy prepared by electro deposition at a con- stant potential is uniform and spherical. Moreover, the Ni-Co alloy with different Co contents can be obtained by controlling the potential. |
| Key words: ionic liquid Ni-Co alloy cyclic voltammetry electrocrystallization mechanism |
