Composition Design of Block Copolymers for Porous Carbon Fibers

Serrano, Joel M.; Li, Tianyu; Khan, Assad U.; Botset, Brandon; Stovall, Benjamin J.; Zhao-yu, XU; Guo, Dong; Cao, Ke; Hao, Xi Hai; Cheng, Shengfeng; Liu, Guoliang

doi:10.1021/acs.chemmater.9b02918

Cited by 33 publications

(50 citation statements)

References 65 publications

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“…d) The dependence of SSA obtained from N 2 adsorption/desorption, and the gravimetric capacitances of PCFs on the volume fraction of PAN. Reproduced with permission 205. Copyright 2019, American Chemical Society.…”

Section: Direct Pyrolysis Methodsmentioning

confidence: 99%

“…Using PMMA as an inner molecular sacrificial template, PMMA‐based block copolymers can be used as precursors for highly porous carbons. Liu et al prepared PMMA‐ b ‐PAN copolymer and carbonized it into highly porous carbons (Figure 12c) 205. By controlling the molecular weight of PMMA, tunable mesopore sizes ranging from 10.9 to 18.6 nm of the obtained porous carbons can be achieved.…”

Section: Direct Pyrolysis Methodsmentioning

confidence: 99%

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Synthesis Strategies of Porous Carbon for Supercapacitor Applications

et al. 2020

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Supercapacitors (SCs) have experienced a significant increase in research activity and commercialization during the past few decades. As the primary and most important electrode active material for commercial SCs, porous carbon is produced at an industrial‐scale through traditional carbonization‐activation strategies. Nevertheless, commercial porous carbon materials have some disadvantages such as high production cost, corrosion of equipment, and emission of toxic gases and byproduct pollutants during production. In recent years, huge efforts have been made to develop novel synthesis strategies for porous carbon materials. This review focuses on the pore formation mechanisms in traditional carbonization‐activation methods, emerging activation methods, template methods, self‐template methods, and novel emerging methods for the synthesis of porous carbons for SCs. Strategies developed so far for the synthesis of porous carbon materials are summarized. The mechanisms and recent advances for each strategy are reviewed. Furthermore, future directions and synthesis strategies for porous carbons are proposed.

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Section: Direct Pyrolysis Methodsmentioning

confidence: 99%

Section: Direct Pyrolysis Methodsmentioning

confidence: 99%

Synthesis Strategies of Porous Carbon for Supercapacitor Applications

et al. 2020

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“…Similarly, mesopore sizes are tunable using soft templates. Notably, the prosperous development of block copolymers over the last few decades has enabled excellent control over the size and order of mesopores at the molecular level via molecular self-assembly and directed assembly 2,3 . The control over the micropore sizes of organic polymers, however, has remained mostly an art.…”

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confidence: 99%

Porous organic materials offer vast future opportunities

Liu

2020

Nat Commun

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In light of the surging research on porous organic materials, we herein discuss the key issues of their porous structures, surface properties, and end functions. We also present an outlook on emerging opportunities, new applications, and data science-assisted materials discovery. Porous organic materials have diverse compositions and tunable pore sizes (Fig. 1), which have enabled a wide variety of applications including separation, filtration, storage, catalysis, and drug delivery. According to the International Union of Pure and Applied Chemistry definition, the pores in the porous organic materials are classified into micropores (<2 nm), mesopores (2-50 nm), and macropores (>50 nm). It is often beneficial for porous organic materials to possess hierarchical pores across multiple length scales. The size exclusion of these pores, as well as the physical and chemical interactions of molecules with pore surfaces, offer the porous organic materials tunable permeability and selectivity that are critical to their applications.

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“…8b). 92,[106][107][108] Chen's group recently reported a self-template approach to synthesize N-doped hierarchical porous carbons by calcining polyacrylonitrile-block-PS copolymers. 109 PS, as the self-template block, promoted the generation of mesopores (6-11 nm), while micropores developed by the activation of the carbon-supply block (polyacrylonitrile) contributed to a large surface area of 2104.5 cm 2 g À1 .…”

Section: Pore Structure Regulationmentioning

confidence: 99%