| 吕凤娟,曹雨晨,朱楠.电沉积制备氮化钴纳米片超级电容器[J].,2021,61(6):551-556 |
| 电沉积制备氮化钴纳米片超级电容器 |
| Electrodeposition of cobalt nitride nanosheet for supercapacitors |
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| DOI：10.7511/dllgxb202106001 |
| 中文关键词:氮化钴碳氮结构超级电容器 |
| 英文关键词:cobalt nitridecarbon nitride structuresupercapacitor |
| 基金项目:国家自然科学基金资助项目(22074010)；大连市科技创新基金资助项目(2019J12SN54). |
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| 中文摘要: |
| 采用一种简单的电化学沉积和退火方法，实现了在碳布基底上碳氮结构修饰氮化钴(CC@Co2N@CN)材料的制备，并将其用于高性能超级电容器．氮化钴表面修饰的碳氮结构不仅可以提高整个电极的电容，而且可以缓解氮化钴的氧化，从而提高整体的导电性能．同时，CC@Co2N@CN表现出极长的寿命，在10 000次循环后容量仍能保持其初始值的77%．在电流密度为1 mA·cm-2时，该电极的面积电容最高可达429.4 mF·cm-2．因为具有较大的面积电容和良好的循环稳定性能，此类基于碳布基底的氮化钴碳氮结构超级电容器在储能领域具有广阔的应用前景． |
| 英文摘要: |
| To obtain excellent performance materials of supercapacitor, on carbon cloth substrate cobalt nitrides with carbon nitride structure modified (CC@Co2N@CN) materials were fabricated by simple electrochemical deposition and annealing method. As prepared carbon nitride structure on cobalt nitrides not only improves the capacitance of whole electrode, but also relives the oxidation of cobalt nitrides, thus enhancing conductivity of the whole device. Besides, CC@Co2N@CN capacitance remains 77% of its initial value after 10 000 cycles, revealing remarkable span life. What is more, the areal capacitance of electrode can reach 429.4 mF·cm-2 at the current density of 1 mA·cm-2. With large areal capacitance and remarkable cycle stability performance, carbon cloth based cobalt nitride with carbon nitride structure modified supercapacitors will have widespread application prospect in energy storage fields. |
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