Sunflower Stalk Based Activated Carbon for Supercapacitors

Yürüm, Alp

doi:10.15671/hjbc.509201

Cited by 6 publications

(3 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Supercapacitors are divided into three categories: electrical double‐layer capacitors that use carbon‐based materials such as activated carbon, 11‐13 graphene, 14,15 carbon nanotubes (CNTs), carbon cloth, 16 carbon nanofibers (CNF) 5,17 ; pseudocapacitors that use conductive polymers (such as PANI, 18,19 polypyrrole, 20 polythiophene, 21 PEDOT:PSS 22 ) or metal oxides/nitrides/sulfides/carbides (such as RuO 2 , MnO 2 , V 2 O 5 , Co 3 O 4 , Fe 3 O 4 ) 23 ; and hybrid capacitors 24‐32 where these two types of materials are used together.…”

Section: Introductionmentioning

confidence: 99%

Polyacrylonitrile/polyvinyl alcohol‐based porous carbon nanofiber electrodes for supercapacitor applications

Altın

Bedeloğlu

2021

Int J Energy Res

View full text Add to dashboard Cite

Summary Porous carbon nanofibers (PCNFs) were produced from polyacrylonitrile (PAN)/polyvinyl alcohol (PVA) hybrid nanofibers with different mixing ratios and used as the free‐standing, flexible, high performance electrodes for the supercapacitors. The effect of PAN/PVA ratio, PVA removing and stabilization/carbonization process on the chemical structure, and the morphology of PAN/PVA hybrid nanofibers and PCNF were investigated by Fourier transform infrared (FT‐IR), field emission scanning electron microscopy (FE‐SEM), and thermogravimetric analyzer (TGA). It was proved by FT‐IR and FE‐SEM analyses that PAN/PVA hybrid nanofibers are successfully produced and carbonized. In addition, the electrochemical performance of PCNF electrodes was analyzed by cyclic voltammetry (CV), galvanostatic charge/discharge (GCD), and electrochemical impedance spectroscopy (EIS) methods. Results showed that PCNFs exhibit higher specific capacitance and better electrochemical performance than neat carbon nanofibers (N‐CNF). The specific capacitance of the EK5 PCNF (67/33 PAN/PVA wt ratio) was 157 F/g at 5 mV/s scan rate in 1 M H2SO4, while the specific capacitance of N‐CNF was 96 F/g at the same conditions. Moreover, the PCNF showed excellent cyclic stability without losing performance through 2500 charge/discharge cycles at a current density of 2 A/g. As a result, free‐standing, flexible, and high‐performance PCNFs are excellent candidates as supercapacitor electrodes for flexible energy‐storage devices.

show abstract

Section: Introductionmentioning

confidence: 99%

Polyacrylonitrile/polyvinyl alcohol‐based porous carbon nanofiber electrodes for supercapacitor applications

Altın

Bedeloğlu

2021

Int J Energy Res

View full text Add to dashboard Cite

show abstract

“…The depressed semi-arc reflected the electrochemical reactions and other side reactions occurring at the cathode side of the battery [13]. The depressed semi-circle can be ascribed to the high charge transfer resistance associated with desolvation/solvation of Li-ions, and Li-ion intercalation/deintercalation into/from the cathode [14,15]. The medium frequency representation of the impedance data showed that the size of the depressed semi-circle increased with the increasing SOC.…”

Section: Analysis Of Impedance Responsementioning

confidence: 98%

Influence of charge conditions on battery dynamics of a commercial lithium-ion cell

Moralı

2020

Hacettepe Journal of Biology and Chemistry

View full text Add to dashboard Cite

T icari bir 2032 lityum-iyon para pilinin batarya dinamikleri üzerinde şarj durumu, şarj akımı ve akım düşüş zamanının etkilerini belirlemek üzere elektrokimyasal empedans spektroskopisi ölçümleri gerçekleştirildi. Empedans cevabı Taguchi tasarımı kullanılarak sistematik bir şekilde araştırıldı ve tartışıldı. Sonuçlar şarj durumunun katı elektrolit ara fazı oluşum direnci ve katodik şarj aktarım direnci üzerinde istatistiksel olarak anlamlı bir etkiye sahip olduğunu gösterdi. Taguchi tasarımının eşdeğer devre modeli ile elde edilen batarya dinamiklerinin analiz edilmesinde önemli bir araç olduğu gösterildi. Taguchi tasarımı gerçek yaşamda lityum-iyon bataryalarının gürbüz bir tasarımı için bir olanak sağlamıştır.

show abstract

“…Zinc chloride (ZnCl2), phosphoric acid (H3PO4), and sulfuric acid (H2SO4) are the frequently used activating agents, although potassium compounds have also been suggested [10]. Raw materials and activation agents significantly influence the surface area and pore structure [11]. The carbon source and production process had a significant impact on the electrochemical performance of ACS in supercapacitors.…”

Section: Introductionmentioning

confidence: 99%

Preparation and analysis of activated carbon from pomegranate peel for battery applications

Selvapandiyan

2022

MNIJ

View full text Add to dashboard Cite

Currently, natural nontoxic carbon in energy storage systems has attracted much attention because of its scalability, low cost, and microspore nature. Activated carbon has a network of interconnected micro-and mesopores. As a result, the carbon material has a large amount of porosity and specific surface area. The pomegranate peel and activation agent significantly affected the surface area and pore structure. Therefore, a pomegranate peel carbon (PPC) anode material was prepared using a hydrothermal method. The effective carbonization of the pomegranate peel was investigated using scanning electron microscopy. Electrochemical measurements were performed using cycle voltammetry. Powder X-ray diffraction (XRD) analysis was used to investigate the nature of the sample. Scanning electron microscopy (SEM) was used to characterize the morphology of the prepared activated carbon.

show abstract

Sunflower Stalk Based Activated Carbon for Supercapacitors

Cited by 6 publications

References 37 publications

Polyacrylonitrile/polyvinyl alcohol‐based porous carbon nanofiber electrodes for supercapacitor applications

Polyacrylonitrile/polyvinyl alcohol‐based porous carbon nanofiber electrodes for supercapacitor applications

Influence of charge conditions on battery dynamics of a commercial lithium-ion cell

Preparation and analysis of activated carbon from pomegranate peel for battery applications

Contact Info

Product

Resources

About