Coarsening-induced hierarchically interconnected porous carbon polyhedrons for stretchable ionogel-based supercapacitors

Kang, Min Seok; Heo, Incheol; Cho, Kyung Gook; Kyung, Hyuna; Kim, Hee Soo; Lee, Keun Hyung; Yoo, Won Cheol

doi:10.1016/j.ensm.2021.12.001

Cited by 21 publications

(7 citation statements)

References 62 publications

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“…The minimal or no cost, low environmental impact, and promising electrochemical features of this approach have piqued the curiosity of academics and industry. In real-world SC applications, hierarchically porous carbon has shown considerable advantages over micropore-based carbon materials [24]. Micropores and mesopores, two types of pores, play a crucial role in creating high specific capacitance and performance rates by providing core adsorption active sites and a rapid diffusion path.…”

Section: Introductionmentioning

confidence: 99%

Recent Trends in Highly Porous Structured Carbon Electrodes for Supercapacitor Applications: A Review

Sriram

Kurkuri

2023

Energies

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Globally, environmental and energy conservation concerns have sparked a push for more efficient and long-term energy sources. Researchers worldwide have put significant effort into developing supercapacitor-based energy storage devices by fabricating electrode materials from affordable porous carbon. The advantages of porous carbons are low-cost processes, high porosity, high surface area, facilitation of surface modification, high conductivity, high mechanical stability, high chemical stability, facilitation of fast ion transport, high rate capability, and high specific capacitance. Using them as electrodes in supercapacitors (SCs) may lead to better performance in specific capacitance and long-term cyclic stability. This study focuses on the recent development of electrode materials for SCs using porous carbons obtained from several diverse sources, such as biomass, polymers, lignite, metal salts, melamine, etc. Therefore, the topic of this review is the most current development of electrode materials for SCs applications. SCs were subjected to a battery of electrochemical tests, which focused on their performance from a crucial perspective, concentrating on the porous carbon’s surface area and surface functional groups. The report also highlights the supercapacitor’s prospects and challenges.

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Section: Introductionmentioning

confidence: 99%

Recent Trends in Highly Porous Structured Carbon Electrodes for Supercapacitor Applications: A Review

Sriram

Kurkuri

2023

Energies

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“…[11][12][13] However, when using biomass-derived CA as electrode materials for ion batteries and supercapacitors, the pore collapse and pore size reduction lead to a diminished cycling lifespan. 14 In addition, the presence of considerable interstitial voids impedes the mass transfer process. [15][16][17] In order to improve the freestanding electrode material performance, heteroatom (N, O, or B) doping has been generally employed.…”

Section: Introductionmentioning

confidence: 99%

“…The ample availability, economic viability, nontoxicity, and environmental compatibility of these materials meet the essential prerequisites for their employment as electrode components in diverse electrochemical applications 11–13 . However, when using biomass‐derived CA as electrode materials for ion batteries and supercapacitors, the pore collapse and pore size reduction lead to a diminished cycling lifespan 14 . In addition, the presence of considerable interstitial voids impedes the mass transfer process 15–17 .…”

Section: Introductionmentioning

confidence: 99%

Heteroatom tuning in agarose derived carbon aerogel for enhanced potassium ion multiple energy storage

Xie,

Liu,

et al. 2023

Carbon Energy

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The incorporation of heteroatoms into carbon aerogels (CAs) can lead to structural distortions and changes in active sites due to their smaller size and electronegativity compared to pure carbon. However, the evolution of the electronic structure from single‐atom doping to heteroatom codoping in CAs has not yet been thoroughly investigated, and the impact of codoping on potassium ion (K+) storage and diffusion pathways as electrode material remains unclear. In this study, experimental and theoretical simulations were conducted to demonstrate that heteroatom codoping, composed of multiple heteroatoms (O/N/B) with different properties, has the potential to improve the electrical properties and stability of CAs compared to single‐atom doping. Electronic states near the Fermi level have revealed that doping with O/N/B generates a greater number of active centers on adjacent carbon atoms than doping with O and O/N atoms. As a result of synergy with enhanced wetting ability (contact angle of 9.26°) derived from amino groups and hierarchical porous structure, ON‐CA has the most optimized adsorption capacity (−1.62 eV) and diffusion barrier (0.12 eV) of K+. The optimal pathway of K+ in ON‐CA is along the carbon ring with N or O doping. As K+ storage material for supercapacitors and ion batteries, it shows an outstanding specific capacity and capacitance, electrochemical stability, and rate performance. Especially, the assembled symmetrical K+ supercapacitor demonstrates an energy density of 51.8 Wh kg−1, an ultrahigh power density of 443 W kg−1, and outstanding cycling stability (maintaining 83.3% after 10,000 cycles in 1 M KPF6 organic electrolyte). This research provides valuable insights into the design of high‐performance potassium ion storage materials.

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“…acing the double pressure of environment and energy, advanced research on catalysts for energy storage and conversion, such as fuel cells [1] , metal air batteries [2][3][4] , lithium sulfur batteries [5] , supercapacitor [6][7][8] , and water splitting [9] have been developed. Carbon materials are free from the constraints of precious metal materials (Pt, Ru, Au) and possess the long life and stable activity [10][11][12] .…”

mentioning

confidence: 99%

“…But two configurations of sp 2 -C and sp 3 -C in the carbon skeleton often take the weak activity in multielectrons catalysis. ACs with nitrogen doping could facilitate ionic diffusion and mass transfer [6][7][8] , thus high energy and power density of supercapacitor can be supported [17,18] .…”

mentioning

confidence: 99%

The Activated Carbon with Pyrolle-N from Cotton Stalk for the Electrochemical Performance

Ren

Cui²,

Zhao³

et al. 2022

Advanced Materials Science and Technology

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Porous carbon materials have been applied in many fields for their advanced physical features. Using biomass waste material as the activated carbon (AC) source is of importance to keep the sustainable environment. The CO 2 activation and KOH activation were adopted to create AC with the flexible porous structure and the former caused low surface area but with high nitrogen content of AC. The reversed results were formed with the KOH activation. The differences on specific surface area and nitrogen groups distribution were investigated by nitrogen sorption isotherm and X-ray photoluminescence spectroscopy. Their porous structure and framework were characterized with transmission electron microscope and Raman spectra. Electrochemical performance was evaluated by supercapacitance and oxygen evolution reaction (OER). Comparing to the CO 2 activation, KOH activation improved surface area of AC and more functional groups on the carbon surface, which led to the enhancement of the electroactivity.

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Coarsening-induced hierarchically interconnected porous carbon polyhedrons for stretchable ionogel-based supercapacitors

Cited by 21 publications

References 62 publications

Recent Trends in Highly Porous Structured Carbon Electrodes for Supercapacitor Applications: A Review

Recent Trends in Highly Porous Structured Carbon Electrodes for Supercapacitor Applications: A Review

Heteroatom tuning in agarose derived carbon aerogel for enhanced potassium ion multiple energy storage

The Activated Carbon with Pyrolle-N from Cotton Stalk for the Electrochemical Performance

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