| 第 50 卷第 2 期 |  | Vol. 50 No. 2 | | 2020 年 4 月 | Apr 2020 |
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所屬欄目：功能材料
稀土摻雜CoCexFe2-xO4的制備及電化學(xué)性能研究 |
| 段紅珍，張麗娜，李光磊，羅銘宇
（中北大學(xué) 理學(xué)院，山西 太原 030051） |
| 摘 要：制備稀土鈰摻雜鈷基鐵氧體并對其形貌和結構進(jìn)行表征，通過(guò)對其微觀(guān)結構的分析研究其電化學(xué)性能。通過(guò)一步溶劑熱法制備CoCexFe2-xO4（x=0、0.04、0.08、0.12、0.16、0.20）納米粒子，經(jīng)SEM、XRD、傅里葉變換紅外、循環(huán)伏安法（CV）、恒流充放電（GCPL）和交流阻抗，表征了其微觀(guān)形貌結構及電化學(xué)性能。電化學(xué)測試性能表明：當電流密度j=1 A·g-1時(shí)，稀土Ce含量x=0.08，比電容量達到525 F·g-1。結果表明：比電容量跟隨稀土離子含量的變化而變化。稀土離子的引入有利于材料導電網(wǎng)絡(luò )的形成，提高其電導率。 |
| 關(guān)鍵詞：CoCexFe2-xO4；電化學(xué)性能；比電容；金屬氧化物；溶劑熱法 |
| 中圖分類(lèi)號：TB34 文獻標識碼：A 文章編號：1009-9212（2020）02-0045-05 |
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| Preparation and Electrochemical Performance of Rare Earth Doped CoCexFe2-xO4 |
| DUAN Hong-zhen, ZHANG Li-na, LI Guang-lei, LUO Ming-yu
(School of Science, North University of China, Taiyuan 030051, China) |
| Abstract：This subject aims to prepare rare earth cerium-doped cobalt-based ferrite and characterize its morphology and structure, and study its electrochemical performance by analyzing its microstructure. Preparation of CoCexFe2-xO4(x=0，0.04, 0.08, 0.12, 0.16, 0.20) nanoparticles were achieved by one-step solvothermal method. SEM, XRD, FTIR, cyclic voltammetry (CV), constant current charge and discharge (GCPL), Nyquist were used to characterize its micro-morphology structure and electrochemical performance. The electrochemical test performance showed that when the current density is 1 A·g-1 and the rare earth Ce at a content of 0.08, the specific capacitance reached 525 F·g-1. The results showed that the specific capacitance changed with the change of rare earth ion content. The introduction of rare earth ions is conducive to the formation of a conductive network of the material and improves its electrical conductivity. |
| Key words：CoCexFe2-xO4; electrochemical performance; specific capacitance; metal oxide; solvothermal method |
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基金項目：山西省留學(xué)基金項目（2014-重點(diǎn)6），國家自然基金資助項目（51272239）。
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作者簡(jiǎn)介：段紅珍（1971-），女，山西太原人，副教授，研究生導師，研究方向：納米功能材料（E-mail：duanhz2000@163.com）
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收稿日期： 2020-04-1
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