| 第 48 卷第 5 期 |  | Vol. 48 No. 5 | | 2018 年 10 月 | Oct 2018 |
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所屬欄目：功能材料
中空CoMn2O4／NC復合物的合成及其電化學(xué)性能研究 |
| 張 慶，酒紅芳，高玉瑩，田 姣，孫 瑜
（中北大學(xué) 理學(xué)院，山西 太原 030051） |
| 摘 要：以碳球為模板，通過(guò)簡(jiǎn)單的水熱-煅燒法合成中空球狀CoMn2O4，再與2-甲基咪唑水熱合成CoMn2O4／ZIF-67，經(jīng)氮氣氣氛煅燒得CoMn2O4／NC復合物。通過(guò)SEM、XRD、BET測試對樣品的形貌和結晶結構進(jìn)行表征，采用CHI660E電化學(xué)工作站對樣品進(jìn)行電化學(xué)性能評估。結果表明，制備得到的中空CoMn2O4／NC復合物用于鋰離子電池陽(yáng)極材料，具有理想的可逆容量，良好的循環(huán)性能和倍率性能，循環(huán)過(guò)程中其庫倫效率保持在99%。 |
| 關(guān)鍵詞：水熱法；CoMn2O4；中空；電化學(xué)性能 |
| 中圖分類(lèi)號：TB332 文獻標識碼：A 文章編號：1009-9212（2018）05-0059-05 |
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| Synthesis and Electrochemical Properties of Hollow CoMn2O4/NC Composites |
| ZHANG Qing, JIU Hong-fang, GAO Yu-ying, TIAN Jiao, SUN Yu
(School of Chemical Engineering and Technology, North University of China, Taiyuan 030051, China) |
| Abstract：The hollow spherical CoMn2O4 was synthesized by a simple hydrothermal-calcination method using a carbon sphere as a template, and then CoMn2O4/ZIF-67 was hydrothermally synthesized with dimethylimidazole, and calcined in a nitrogen atmosphere to obtain CoMn2O4/NC composite material. The morphology and crystal structure of the samples were characterized by SEM, XRD and BET tests. The electrochemical performance of the samples was evaluated using CHI660E electrochemical workstation. The results showed that the prepared hollow CoMn2O4/NC composites used in anode materials of lithium ion batteries showed good reversible capacity, good cycle performance and rate performance. The coulomb efficiency was maintained at 99% during the whole cycle. |
| Key words：hydrothermal method; CoMn2O4/NC; hollow; electrochemical performance |
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基金項目：中北大學(xué)理學(xué)院研究生創(chuàng )新項目基金。
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作者簡(jiǎn)介：張 慶（1992-），女，山西晉中人，碩士研究生，研究方向：鋰離子電池電極材料（E-mail：1056191985@qq.com）。
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收稿日期： 2018-10-0
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