| 引用本文: | 徐丽,盛鹏,赵广耀,刘海镇,刘双宇,沈鲁恺,郑超,周旭峰,刘兆平.基于海藻制备超级电容器用三维多孔石墨烯[J].材料科学与工艺,2016,24(5):53-57.DOI:10.11951/j.issn.1005-0299.20160509. |
| XU Li,SHENG Peng,ZHAO Guangyao,LIU Haizhen,LIU Shuangyu,SHEN Lukai,ZHENG Chao,ZHOU Xufeng,LIU Zhaoping.Three dimensional porous graphene derived from alga for supercapacitors[J].Materials Science and Technology,2016,24(5):53-57.DOI:10.11951/j.issn.1005-0299.20160509. |
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| 基于海藻制备超级电容器用三维多孔石墨烯 |
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徐丽1,盛鹏1,赵广耀1,刘海镇1,刘双宇1, 沈鲁恺2,郑超2,周旭峰2,刘兆平2
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(1.先进输电技术国家重点实验室(全球能源互联网研究院),北京 102211; 2.中国科学院宁波材料技术与工程研究所,浙江 宁波 315201)
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| 摘要: |
| 以海藻作为固相碳源，利用海藻对金属离子具有吸附性能的特点，在未进行生物质材料改性的条件下，实现海藻生物质材料对催化剂金属离子的均匀吸附.本文结合原位高温金属催化和化学活化的方法制备三维多孔石墨烯，并研究了其作为超级电容器电极材料的电化学性能.通过扫描电镜、透射电镜、X射线衍射、拉曼光谱、氮气吸附等手段对三维多孔石墨烯的形貌与结构进行表征分析.研究结果表明，制备的三维多孔石墨烯具有片层状三维网络结构，且片层较薄，并具有较高的石墨化程度，其比表面积达到1 700 m2/g，孔径分布主要在2~10 nm.以该三维多孔石墨烯材料作为超级电容器电极材料，进行电化学性能表征，发现在较低的电压扫速下得到的比电容量为90 F/g，同时，该材料还具有较高的能量密度和功率密度.以海藻为固相碳源制备得到的三维多孔石墨烯材料在超级电容器领域具有一定的应用前景.
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| 关键词: 海藻 高温催化 三维网络 多孔石墨烯 超级电容器 |
| DOI：10.11951/j.issn.1005-0299.20160509 |
| 分类号:TQ152 |
| 文献标识码:A |
| 基金项目:国网公司资助项目(SGRI-WD-71-14-017). |
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| Three dimensional porous graphene derived from alga for supercapacitors |
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XU Li1, SHENG Peng1, ZHAO Guangyao1, LIU Haizhen1, LIU Shuangyu1,SHEN Lukai2, ZHENG Chao2, ZHOU Xufeng2, LIU Zhaoping2
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(1.State Key Laboratory of Advanced Transmission Technology( Global Energy Interconnection Research Institute, Future Science & Technology Park), Beijing 102211, China;2.Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201,China)
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| Abstract: |
| The alga as solid carbon source, which has adsorption characteristics for metal ions, can adsorb metal ion catalyst uniformly without the conditions of biomass material modification. Three dimensional porous graphene was synthesized by combination of high temperature metallic catalysis and chemical activation using alga as the precursor. The morphology and structure of the three dimensional porous graphene was characterized with scanning electron microscope (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), Raman and N2 adsorption/desorption, while its capacitive properties were investigated using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) techniques. The results showed that the porous graphene had three-dimensional network structure, with a relatively high graphitization degree and a high specific surface area of 1 700 m2/g. The internal pore size of porous graphene ranged from 2 to 10 nm. The supercapacitor based on the porous graphene showed good electrochemical capacitance (up to 90 F/g at 1 mV/s). In the two-electrode symmetric supercapacitor, relatively high energy densities and power densities could be achieved.
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| Key words: alga catalysis chemical activation porous graphene supercapacitor |
