材料科学
超级电容器
热解
化学工程
多孔性
碳纤维
电容
电极
纳米技术
复合材料
复合数
工程类
物理化学
化学
作者
Chengwei Wang,Michael J. O’Connell,Candace K. Chan
标识
DOI:10.1021/acsami.5b02453
摘要
Foam-like porous carbons with specific surface area (SSA) up to 2340 m(2)/g were synthesized using direct pyrolysis of sugar and zinc nitrate mixtures without any hard templates. The role of the ZnO nanoparticles formed from the decomposition of zinc nitrate, and the effects of high-temperature annealing on the formation of the high-SSA carbon foams were systematically studied. Due to the facile and quick reaction conditions, these carbon foams could be easily synthesized on a large scale. When used as supercapacitor electrode materials, a specific capacitance up to 280 F/g was achieved at current density of 0.1 A/g and remained as high as 207 F/g, even at a high current density of 10 A/g.
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