Role of Nitrogen on the Porosity, Surface, and Electrochemical Characteristics of Activated Carbon

Treeweranuwat, Panudetch; Boonyoung, Pawan; Chareonpanich, Metta; Nueangnoraj, Khanin

doi:10.1021/acsomega.9b03586

Cited by 35 publications

(18 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the excessive amounts of N content can collapse the pore structure, which results in conversion of micropores into mesopores, thereby leading to loss of surface area. 54 Arenillas et al suggested that at high nitrogen content, the edges of graphene layers may be heavily decorated by the N-functional groups, which act as steric obstacles and partly block the nitrogen to pores, leading to a decrease in surface area. 55 Therefore, the surface area increases from NAC (1:1) to NAC (2:1) and further declines in the case of NAC (3:1).…”

Section: Resultsmentioning

confidence: 99%

Nitrogen-Doped High Surface Area Porous Carbon Material Derived from Biomass and Ionic Liquid for High-Performance Supercapacitors

Brahma

Ramanujam

Gardas

2022

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

In this work, bioderived high surface area, porous activated carbons (ACs) are synthesized from dried Sterculia foetida (SF) fruit shells via KOH activation. Further, for highperformance supercapacitor (SC) application, the nitrogen-doped AC (NAC) has been derived by pyrolysis of a nitrogen-enriched ionic liquid (IL) and AC mixture. Herein, aprotic 1-ethyl-3-methyl-imidazolium dicyanamide ([EMIM][DCN]) IL is used as a nitrogen precursor. A series of NACs has been successfully developed by tuning the weight ratio of IL and AC. The optimized NAC (2:1) exhibits suitable graphitization degree, hierarchical micromesopores to ensure effective electrolyte diffusion, high surface area, and enhanced wettability. Further, in a three-electrode configuration, the NAC (2:1) electrode shows a high specific capacitance of 567 F g −1 at 0.5 A g −1 . Moreover, a symmetric two-electrode SC device was constructed, providing excellent specific energy of 13 Wh kg −1 at 300 W kg −1 . Overall, this study presents the positive aspects of an IL as a nitrogen precursor to synthesize high surface area NACs as a promising electrode material for SC applications.

show abstract

Section: Resultsmentioning

confidence: 99%

Nitrogen-Doped High Surface Area Porous Carbon Material Derived from Biomass and Ionic Liquid for High-Performance Supercapacitors

Brahma

Ramanujam

Gardas

2022

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

show abstract

“…The prepared monomer was stated for organic electronics ( Treeweranuwat et al, 2020 ). Therefore, the network polymers prepared using the monomer can be highly conductive in nature.…”

Section: Resultsmentioning

confidence: 99%

Development of Uniform Porous Carbons From Polycarbazole Phthalonitriles as Durable CO2 Adsorbent and Supercapacitor Electrodes

et al. 2022

View full text Add to dashboard Cite

Advances in new porous materials have recognized great consideration in CO2 capture and electrochemical energy storage (EES) applications. In this study, we reported a synthesis of two nitrogen-enriched KOH-activated porous carbons prepared from polycarbazole phthalonitrile networks through direct pyrolysis protocol. The highest specific surface area of the carbon material prepared by pyrolysis of p-4CzPN polymer reaches 1,279 m2 g−1. Due to the highly rigid and reticular structure of the precursor, the obtained c-4CzPN–KOH carbon material exhibits high surface area, uniform porosity, and shows excellent CO2 capture performance of 19.5 wt% at 0°C. Moreover, the attained porous carbon c-4CzPN–KOH showed high energy storage capacities of up to 451 F g−1 in aqueous electrolytes containing 6.0 M KOH at a current density of 1 A g-1. The prepared carbon material also exhibits excellent charge/discharge cycle stability and retains 95.9% capacity after 2000 cycles, indicating promising electrode materials for supercapacitors.

show abstract

“…The precursors for the preparation of AC usually contain carbon, such as coals , and coconut shells . Their adsorption capacity, wettability, and ion storage capacity can be enhanced by introducing heteroatoms such as nitrogen, oxygen, and sulfur into the carbon skeleton. − Heteroatoms are usually introduced into the carbon framework of ACs by the following approaches: (i) post-treatment of ACs by chemical reactions with reagents containing the desired heteroatoms, (ii) molecular grafting of heteroatoms onto the carbon framework, and (iii) carbonization and activation of heteroatom-rich carbonaceous materials . Chemical impregnation with a chemical agent such as ZnCl 2 , H 3 PO 4 , and KOH can prevent tar formation and enhance carbon conversion.…”

Section: Introductionmentioning

confidence: 99%

Sulfur-Doped Carbons from Durian Peels, Their Surface Characteristics, and Electrochemical Behaviors

Desa

Ishii

Nueangnoraj³

2021

ACS Omega

Self Cite

View full text Add to dashboard Cite

Durian peels are an agricultural waste in Asian countries, including Thailand, Indonesia, and Malaysia, which can be used as a precursor for the production of activated carbon. The objective of this work is to produce activated carbon from durian peels by chemical activation using sodium sulfite (Na2SO3) as an activating and sulfur-doping agent. The process parameter investigated in this study was the activation temperature (500–900 °C) at a fixed impregnation ratio (durian to activating agent of 1:1, by weight). Specific surface areas and pore structures were determined by nitrogen adsorption and desorption measurements, and elemental compositions were characterized by CHNSO analysis. The chemical structure and surface functionality were examined by X-ray photoelectron spectroscopy. The electrochemical behavior of the obtained activated carbon was characterized in 6 M KOH using a three-electrode configuration. It was found that the sulfur content decreases with activation temperature. In contrast, the specific surface area of the activated carbon increases with activation temperature. However, the sample activated at 900 °C with the highest specific surface area (1499 m2 g–1) has a lower specific capacitance (166 F g–1) than the one activated at 700 °C (183 F g–1). This could be due to the presence of a pseudocapacitance caused by the organic sulfur functional groups such as thiophene, sulfone, and sulfoxide, which can trigger a surface redox reaction, leading to a higher capacitance.

show abstract

Role of Nitrogen on the Porosity, Surface, and Electrochemical Characteristics of Activated Carbon

Cited by 35 publications

References 50 publications

Nitrogen-Doped High Surface Area Porous Carbon Material Derived from Biomass and Ionic Liquid for High-Performance Supercapacitors

Nitrogen-Doped High Surface Area Porous Carbon Material Derived from Biomass and Ionic Liquid for High-Performance Supercapacitors

Development of Uniform Porous Carbons From Polycarbazole Phthalonitriles as Durable CO2 Adsorbent and Supercapacitor Electrodes

Sulfur-Doped Carbons from Durian Peels, Their Surface Characteristics, and Electrochemical Behaviors

Contact Info

Product

Resources

About