Co-assembly strategy for uniform and tunable hollow carbon spheres with supercapacitor application.,Journal of Colloid and Interface Science

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Co-assembly strategy for uniform and tunable hollow carbon spheres with supercapacitor application.
Journal of Colloid and Interface Science ( IF 9.4 ) Pub Date : 2020-01-10 , DOI: 10.1016/j.jcis.2020.01.021
Juan Du ₁ , Shuang Zong ₂ , Yue Zhang ₁ , Senlin Hou ₃ , Aibing Chen ₁

Affiliation

Carbon materials with hollow structure have wide applications in adsorption, electrochemistry, catalysis and many other fields. Herein, hollow carbon spheres (HCS) with uniform spherical morphology, adjustable structure, and abundant mesopores are prepared by a feasible co-assembly of hexadecyl-trimethyl-ammonium-bromide, silica precursor (teraethoxysilane (TEOS)) and carbon precursor oligomer (phenol/formaldehyde (PF) resin) in a Stöber-like system. Alcohol-water based solvent of the reactant system shows strong effects on the hydrolysis rate of TEOS relative to the polymerization rate of PF resin, which results in tunable structures for HCS materials. With the increase of alcohol-water ratio, the structure of HCS can be adjusted from irregular porous particles to hollow spheres, and then to core-shell structure. In addition, the diameter of the core increased and thickness of carbon shell decreased for the HCS. The obtained HCS showed rich mesoporous structure, thin carbon shell and relative uniform spherical morphology, which endow HCS with good electrochemical performance for supercapacitor, indicating their promising ability in energy storage.

中文翻译：

具有超级电容器应用的均匀可调碳空心球的联合装配策略。

具有中空结构的碳材料在吸附，电化学，催化等许多领域具有广泛的应用。本文中，通过十六烷基三甲基溴化铵，二氧化硅前体（叔乙氧基硅烷（TEOS））和碳前体低聚物（苯酚）的可行共组装，制备了具有均匀球形形态，可调结构和丰富中孔的空心碳球（HCS）。 /甲醛（PF）树脂）。相对于PF树脂的聚合速率，反应物系统的醇-水基溶剂对TEOS的水解速率表现出强烈的影响，这导致HCS材料的结构可调。随着醇水比的增加，HCS的结构可以从不规则的多孔颗粒变为空心球，再变为核-壳结构。此外，HCS的核直径增加而碳壳厚度减小。所获得的HCS具有丰富的介孔结构，薄的碳壳和相对均匀的球形形态，这使得HCS具有良好的超级电容器电化学性能，表明它们具有良好的储能能力。

更新日期：2020-01-11

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