Fabrication of Hollow Microporous Carbon Spheres from Hyper‐Crosslinked Microporous Polymers

Abstract

Porous carbon materials prepared from the porous organic polymers are currently the subject of extensive investigation. On the basis of their interesting applications, it is highly desirable to develop new synthetic methodologies to obtain carbon materials with controllable pore size and morphology. Herein, a facile synthesis of hollow microporous carbon spheres (HCSs) from hollow microporous organic capsules (HMOCs) with a good control over the pore morphology, hollow cavity, and the shell thickness is reported. The highly porous hollow carbon spheres are prepared by the pyrolysis of HMOCs-based microporous polymers. The synthetic parameters, such as hypercrosslinking and pyrolysis conditions, are optimized to modify the porous structures and the properties. The morphology and porosity as well as energy storage applications of the microporous structures HCSs, derived through a combination of divinylbenzene-crosslinking and micropore-generating hypercrosslinking, are discussed. These findings provide a new benchmark for fabricating well-defined HCSs with great promise for various applications.

Facile Synthesis of Nitrogen-Doped Microporous Carbon Spheres for High Performance Symmetric Supercapacitors

“…As shown in Fig. 6f and Additional file 1 : Table S2, the NMCSs-600-based SSD has a great advantages compared with other CSs based supercapacitor devices, such as core-shell ultramicroporous@microporous carbon nanospheres [ 23 ], N-doped carbon nanospheres [ 37 – 39 ], N and O co-doped carbon microspheres [ 40 ], hollow CSs [ 41 ], graphitic hollow CSs [ 42 ], N-doped hollow CSs [ 43 , 44 ] and nitrogen-phosphorus co-doped hollow carbon microspheres [ 15 ]. Furthermore, two as-fabricated NMCSs-600-based SSDs are connected in series could power a red light emitting diode (inset of Fig.…”

Seeded Synthesis of Monodisperse Core–Shell and Hollow Carbon Spheres

“…Other methods previously reported to avoid aggregation include multi-step methodologies such as the growth of intermediate SiO 2 layers, [20] the use of additional surfactants, [18] or even hypercrosslinking strategies. [32,33] To the best of the authors' knowledge, spherical, non-aggregated PS@C spheres and hollow CSs have never been reported with such control over size range and distribution by means of such simple, green, and straightforward methodology. Thus, broad interest is envisioned for both hybrid and hollow systems in the development of electrode materials in fuel cells, batteries, supercapacitors, supports in catalysis, or building blocks for the assembly of hierarchically complex structures such as opal-like ones working as photonic crystals in the IR.…”

Porous Organic Polymers for CO2 Storage and Conversion Reactions

“…Hyper‐cross‐liked microporous polymers constitute another group of porous organic materials, where cross‐linked polymer networks are formed between more than one aromatic monomers through the Lewis acid catalyzed polycondensation reactions ,. Apart from offering exceptionally high specific surface areas, these materials can be easily post‐functionalized with reactive organic groups like −CO 2 H (through oxidation of terminal −CH 3 ) or −SO 3 H (through sulfonation) etc.…”