Wang Chengwei, O'Connell Michael J, Chan Candace K
Materials Science and Engineering School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, Arizona 85287, United States.
ACS Appl Mater Interfaces. 2015 Apr 29;7(16):8952-60. doi: 10.1021/acsami.5b02453. Epub 2015 Apr 15.
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.
通过直接热解糖和硝酸锌混合物，无需任何硬模板，合成了比表面积（SSA）高达2340 m²/g的泡沫状多孔碳。系统研究了由硝酸锌分解形成的ZnO纳米颗粒的作用以及高温退火对高比表面积碳泡沫形成的影响。由于反应条件简便快速，这些碳泡沫能够轻松大规模合成。当用作超级电容器电极材料时，在电流密度为0.1 A/g时，比电容高达280 F/g，即使在10 A/g的高电流密度下，仍高达207 F/g。
