Hydrangea-like multi-scale carbon hollow submicron spheres with hierarchical pores for high performance supercapacitor electrodes

Guo, Daying; Chen, Xian; Fang, Zhipeng; He, Yongjun; Zheng, Chen; Yang, Zhi; Yang, Keqin; Chen, Ying; Huang, Shaoming

doi:10.1016/j.electacta.2015.07.032

Cited by 36 publications

(17 citation statements)

References 39 publications

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“…After our discovery of KCC-1 in march 2010, several reputed groups worldwide reported the successful use of KCC-1 for various applications such as catalysis, photocatalysis, CO 2 capture-conversion, sensing, detection and extraction of ions, supercapacitors, drug delivery and other biomedical applications 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 . Although KCC-1 nano-spheres possess unique textural and physical properties and show a dramatic enhancement in activity, control over their particle size, fiber density and textural properties (surface area, pore volume, pore size) has not been achieved yet 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 , despite their being critical parameters for the successful development of KCC-1-supported catalysts/photocatalysts and sorbents as well as in drug delivery. For example, drug delivery applications need smaller particles (smaller than 200 nm) 16 , while catalysts will be more stable if the particle size is larger (without comp...…”

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confidence: 99%

Size and Fiber Density Controlled Synthesis of Fibrous Nanosilica Spheres (KCC-1)

Bayal

Singh

et al. 2016

Sci Rep

145

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We report a facile protocol for the synthesis of fibrous nano-silica (KCC-1) with controllable size and fiber density. In this work, we have shown that the particle size, fiber density, surface area and pore volume of KCC-1 can be effectively controlled and tuned by changing various reaction parameters, such as the concentrations of urea, CTAB, 1-pentanol, reaction time, temperature, solvent ratio, and even outside stirring time. For the first time, we were able to control the particle size ranging from as small as 170 nm to as large as 1120 nm. We were also able to control the fiber density from low to medium to very dense, which consequently allowed the tuning of the pore volume. We were able to achieve a pore volume of 2.18 cm3/g, which is the highest reported for such a fibrous material. Notably we were even able to increase the surface area up to 1244 m2/g, nearly double the previously reported surface area of KCC-1. Thus, one can now synthesize KCC-1 with various degrees of size, surface area, pore volume, and fiber density.

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confidence: 99%

Size and Fiber Density Controlled Synthesis of Fibrous Nanosilica Spheres (KCC-1)

Bayal

Singh

et al. 2016

Sci Rep

145

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“…The development of next‐generation supercapacitors for energy storage requires active electrode materials with tunable pore sizes, pore volumes, and surface areas as well as surface morphologies. High surface area carbon spheres with DFNS‐like fibrous morphology were prepared by Huang and co‐workers, and they showed extraordinary performance in supercapacitor applications . They used amine‐functionalized DFNS as a hard template and glucose as a carbon precursor, which reacted with the surface amine groups of DFNS under hydrothermal conditions.…”

Section: Miscellaneous Applications Of Dfnsmentioning

confidence: 99%

“…It also showed good rate capability (171 F g −1 at 15 A g −1 ) as well as good energy and power density. The author claimed that these were the best numbers among those of reported previously for carbon materials, which was indicative of the role of the fibrous morphology of DFNS for advanced supercapacitor development …”

Section: Miscellaneous Applications Of Dfnsmentioning

confidence: 99%

Dendritic Fibrous Nanosilica for Catalysis, Energy Harvesting, Carbon Dioxide Mitigation, Drug Delivery, and Sensing

2017

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Morphology‐controlled nanomaterials such as silica play a crucial role in the development of technologies for addressing challenges in the fields of energy, environment, and health. After the discovery of Stöber silica, followed by that of mesoporous silica materials, such as MCM‐41 and SBA‐15, a significant surge in the design and synthesis of nanosilica with various sizes, shapes, morphologies, and textural properties has been observed in recent years. One notable invention is dendritic fibrous nanosilica, also known as KCC‐1. This material possesses a unique fibrous morphology, unlike the tubular porous structure of various conventional silica materials. It has a high surface area with improved accessibility to the internal surface, tunable pore size and pore volume, controllable particle size, and, importantly, improved stability. Since its discovery, a large number of studies have been reported concerning its use in applications such as catalysis, solar‐energy harvesting, energy storage, self‐cleaning antireflective coatings, surface plasmon resonance‐based ultrasensitive sensors, CO2 capture, and biomedical applications. These reports indicate that dendritic fibrous nanosilica has excellent potential as an alternative to popular silica materials such as MCM‐41, SBA‐15, Stöber silica, and mesoporous silica nanoparticles. This Review provides a critical survey of the dendritic fibrous nanosilica family of materials, and the discussion includes the synthesis and formation mechanism, applications in catalysis and photocatalysis, applications in energy harvesting and storage, applications in magnetic and composite materials, applications in CO2 mitigation, biomedical applications, and analytical applications.

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“…Recent work revealed the advantages of carbon nanospheres [23][24][25] as high performance supercapacitor electrode when applied in supercapacitors. 26,27 Particularly, carbon nanospheres with hierarchical porous architectures demonstrated maximized specic surface area while minimized electron and ion transport distances.…”

Section: Introductionmentioning

confidence: 99%

Nitrogen doped microporous carbon nanospheres derived from chitin nanogels as attractive materials for supercapacitors

et al. 2019

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Hydrangea-like multi-scale carbon hollow submicron spheres with hierarchical pores for high performance supercapacitor electrodes

Cited by 36 publications

References 39 publications

Size and Fiber Density Controlled Synthesis of Fibrous Nanosilica Spheres (KCC-1)

Size and Fiber Density Controlled Synthesis of Fibrous Nanosilica Spheres (KCC-1)

Dendritic Fibrous Nanosilica for Catalysis, Energy Harvesting, Carbon Dioxide Mitigation, Drug Delivery, and Sensing

Nitrogen doped microporous carbon nanospheres derived from chitin nanogels as attractive materials for supercapacitors

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