玉米芯基多孔炭的制备及其在超级电容器中的应用
摘 要
超级电容器作为新型储能器件在能源领域备受关注，其电极材料的性能对整体性能起着关键作用。本研究以玉米芯为原料，通过KOH活化法制备多孔炭材料，并探究其作为超级电容器电极材料的应用。首先将玉米芯粉碎、过筛后，在不同温度下进行碳化处理，随后利用KOH在700℃条件下进行活化，制得具有丰富孔结构的多孔炭。采用X射线衍射、扫描电子显微镜等手段对样品进行表征，结果显示该多孔炭拥有发达的孔隙结构和较大的比表面积。将其组装成三电极体系测试电化学性能，结果表明，在电流密度为1A/g时，比电容可达265F/g，且经过3000次循环充放电后，容量保持率仍高达92.4%，表现出良好的倍率性能和循环稳定性。
关键词：超级电容器 多孔炭 玉米芯
Abstract
As a new type of energy storage device, supercapacitors have attracted much attention in the energy field, and the performance of their electrode materials plays a key role in the overall performance. In this study, porous carbon material was prepared by KOH activation and explored its application as electrode materials for supercapacitors. First, the corn cob was crushed and screened, carbonized at different temperatures, and then activated by KOH at 700℃ to produce porous carbon with rich porous structure. The samples were characterized by X-ray diffraction and scanning electron microscopy, and the results showed that the porous carbon has a developed pore structure and a large specific surface area. Assembled into a three-electrode system to test the electrochemical performance, the results show that at the current density of 1A / g, the specific capacitor can reach 265F / g, and after 3000 cycles of charge and discharge, the capacity retention rate is still as high as 92.4%, showing good multiplier performance and cycle stability.
Keyword:Super Capacitor Porous Carbon Corn Core
目 录
1绪论 1
1.1研究背景与意义 1
1.2国内外研究现状 1
1.3本文研究方法 2
2玉米芯基多孔炭的制备工艺 2
2.1原料选择与预处理 2
2.2制备方法探索 3
2.3工艺参数优化 3
3多孔炭材料的表征分析 4
3.1结构与形貌表征 4
3.2物理化学性质 4
3.3表面特性分析 5
4在超级电容器中的应用性能 6
4.1电化学性能测试 6
4.2性能影响因素 6
4.3应用前景展望 7
结论 8
参考文献 9
致谢 10
摘 要
超级电容器作为新型储能器件在能源领域备受关注，其电极材料的性能对整体性能起着关键作用。本研究以玉米芯为原料，通过KOH活化法制备多孔炭材料，并探究其作为超级电容器电极材料的应用。首先将玉米芯粉碎、过筛后，在不同温度下进行碳化处理，随后利用KOH在700℃条件下进行活化，制得具有丰富孔结构的多孔炭。采用X射线衍射、扫描电子显微镜等手段对样品进行表征，结果显示该多孔炭拥有发达的孔隙结构和较大的比表面积。将其组装成三电极体系测试电化学性能，结果表明，在电流密度为1A/g时，比电容可达265F/g，且经过3000次循环充放电后，容量保持率仍高达92.4%，表现出良好的倍率性能和循环稳定性。
关键词：超级电容器 多孔炭 玉米芯
Abstract
As a new type of energy storage device, supercapacitors have attracted much attention in the energy field, and the performance of their electrode materials plays a key role in the overall performance. In this study, porous carbon material was prepared by KOH activation and explored its application as electrode materials for supercapacitors. First, the corn cob was crushed and screened, carbonized at different temperatures, and then activated by KOH at 700℃ to produce porous carbon with rich porous structure. The samples were characterized by X-ray diffraction and scanning electron microscopy, and the results showed that the porous carbon has a developed pore structure and a large specific surface area. Assembled into a three-electrode system to test the electrochemical performance, the results show that at the current density of 1A / g, the specific capacitor can reach 265F / g, and after 3000 cycles of charge and discharge, the capacity retention rate is still as high as 92.4%, showing good multiplier performance and cycle stability.
Keyword:Super Capacitor Porous Carbon Corn Core
目 录
1绪论 1
1.1研究背景与意义 1
1.2国内外研究现状 1
1.3本文研究方法 2
2玉米芯基多孔炭的制备工艺 2
2.1原料选择与预处理 2
2.2制备方法探索 3
2.3工艺参数优化 3
3多孔炭材料的表征分析 4
3.1结构与形貌表征 4
3.2物理化学性质 4
3.3表面特性分析 5
4在超级电容器中的应用性能 6
4.1电化学性能测试 6
4.2性能影响因素 6
4.3应用前景展望 7
结论 8
参考文献 9
致谢 10
