Double layer capacitance of high surface area carbon nanospheres derived from resorcinol-formaldehyde polymers
Double layer capacitance of high surface area carbon nanospheres derived from resorcinol-formaldehyde polymers
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DOI：
10.1016/j.carbon.2011.07.005
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发表时间：
2011-11-01
期刊：
影响因子：
10.9
通讯作者：
Kijima, Tsuyoshi
中科院分区：
文献类型：
--
作者：
Tashima, Daisuke;Yamamoto, Eri;Kijima, Tsuyoshi
采用表面活性剂模板法和BaO（2）化学活化法相结合的方法合成了高比表面积的微孔-介孔双峰碳纳米球。以间苯二酚（R）和甲醛（F）为原料，十六烷基三甲基溴化铵（CTAB）为模板剂，三甲基苯（TMB）和叔丁醇（t-BuOH）为助表面活性剂，在NaOH催化下合成了球形纳米聚合物/表面活性剂复合材料。在用盐酸预处理之后，将复合材料在1000 ℃下在N（2）中煅烧，其中BaO（2）与RF聚合物的重量比在0至11的范围内变化。它产生了直径为124-143 nm的微孔-介孔双峰碳纳米球，其比表面积高达1884 m2 g-1或高达3301 m2 g-1，与在低BaO（2）负载下获得的具有较小表面积的微孔相比。所得纳米碳在0.5 M H（2）SO（4）中的电化学双电层电容显示出随比表面积的显著增加，对于最高表面积的碳材料高达219 F g（-1）。(C)2011爱思唯尔有限公司保留所有权利。
Micro-mesoporous bimodal carbon nanospheres with high surface areas were synthesized by a combined use of surfactant templating technique and BaO(2) chemical activation one. Starting spherical nanopolymer/surfactant composites were prepared by the NaOH-catalyzed reaction of resorcinol (R) and formaldehyde (F) in the presence of cetyltrimethylammonium bromide (CTAB) as a core template and 1,3,5-trimethylbenzene (TMB) and tert-butanol (t-BuOH) as cosurfactants. After pretreatment with hydrochloric acid, the composite materials were calcined at 1000 degrees C in N(2) coexistent with varying weight ratios of BaO(2) to RF polymer ranging from 0 to 11. It produced micro-mesoporous bimodal carbon nanospheres of 124-143 nm diameter, with specific surface areas as high as 1884 m(2) g(-1) or up to 3301 m(2) g(-1), in contrast to microporous ones with smaller surface areas obtained at low BaO(2)-loadings. The electrochemical double layer capacitance of the resulting nanocarbons in 0.5 M H(2)SO(4) showed a marked increase with specific surface areas, up to as high as 219 F g(-1) for the highest surface area carbon material. (C) 2011 Elsevier Ltd. All rights reserved.