| 丁孟莎，周睿涵，王焱倩，宣永康，邹如意，牛燕燕，张晓萍，孙 伟*.钴锰氧化物@生物质碳复合材料的制备与
电容性能研究[J].海南师范大学学报自科版,2021,34(4):377-383 |
| 钴锰氧化物@生物质碳复合材料的制备与
电容性能研究 |
| Preparation of Cobalt Manganese Oxide@Biomass CarbonComposites and Capacitive Performance Investigations |
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| DOI：10.12051/j.issn.1674-4942.2021.04.003 |
| 中文关键词: 超级电容器 生物质碳 电化学 钴锰氧化物 |
| 英文关键词: supercapacitor biomass carbon electrochemistry cobalt and manganese oxides |
| 基金项目:海南师范大学校级大学生创新训练项目；2020年海南省重点研发计划项目-社会发展方向（ZDYF2020204） |
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| 中文摘要: |
| 用水热法将锰和钴盐负载于海带衍生生物质碳（BC）表面后经高温热解形成生物质碳
负载钴锰氧化物（Co-Mn-O@BC）。利用X射线衍射仪和扫描电镜表征了复合材料的物相和形貌，
结果表明Co-Mn-O@BC为碳载正方晶系的钴锰氧化物［（Co，Mn）（Co，Mn）2O4
］，且为绒球状。利用
循环伏安法、恒电流充放电法和交流阻抗法评价Co-Mn-O@BC作为电极材料的电容性能。相比于
Co-O@BC和BC，Co-Mn-O@BC的电容性能最佳，在1 A/g电流密度下的比电容达1 070.88 F/g。组
装的Co-Mn-O@BC//BC二电极装置在功率密度为800 W/kg时能量密度为49.26 Wh/kg，在10 A/g的
电流密度下经5 000次充放电循环后的容量保持率为92.02%。 |
| 英文摘要: |
| Manganese and cobalt sources were loaded on the surface of kelp derived biomass carbon (BC) by hydrothermal
method, and the precursor was then thermal decomposed to form biomass carbon-supported cobalt and manganese oxides
(Co-Mn-O@BC). The phase and morphology of the composite were characterized by X-ray diffraction and scanning elec⁃
tron microscopy. The results showed that Co-Mn-O@BC was a carbon-supported tetragonal cobalt manganese oxide [(Co,
Mn)(Co, Mn)2O4] with a fluff sphere shape. The capacitive performances of Co-Mn-O@BC material were evaluated by cy⁃
clic voltammetry, galvanostatic charge-discharge and electrochemical impedance spectroscopy. Compared with Co-O@BC
and BC, Co-Mn-O@BC had the best capacitive performance with a specific capacitance of 1 070.88 F/g at the current den⁃
sity of 1 A/g. As for the two-electrode device (Co-Mn-O@BC//BC), the energy density can reach 49.26 Wh/kg when the
power density was 800 W/kg, and the capacity retention rate was 92.02% over 5 000 cycles at 10 A/g current density. |
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