Production of Porous Carbon by the Synergistic Chemical and Physical Activations and its Capacitive Performance

Murat Yılmaz; Mikail Baykal; Ahmed A. Farghaly; Müslüm Demir

Makale detayları

Production of Porous Carbon by the Synergistic Chemical and Physical Activations and its Capacitive Performance

Yazarlar:

Murat Yılmaz | Mikail Baykal | Ahmed A. Farghaly | Müslüm Demir

Yayıncı:

Igdir University

Ana Başlıklar:

Kimya Mühendisliği

Dergi:

Iğdır Üniversitesi Fen Bilimleri Enstitüsü Dergisi Vol.13 Issue 3, pp.1888-1901

Belge Tipi:

Makale

Yayın Tarihi:

1/2023

Belge Dili:

İngilizce

Document ID (Org No.):

2001293787

pISSN:

2536-4618

Anahtar kelimeler:

Özet:

 Biomass-derived carbons have been extensively investigated for supercapacitor applications thanks to their advantages such as high specific capacitance value, low cost, environmental friendliness, and readily available natural materials. In this study, unique oxygen-rich porous carbons were successfully prepared by combining chemical KOH and physical CO2 activation methods. The physical and textural properties of as-prepared carbon materials are highly dependent on the synthesis conditions. The resulting PC-4K-CO2 porous carbon exhibited a hierarchical porous structure consisting of micropores, mesopores, and macropores along with a large surface area of 1318.4 cm2g, which allowed high exposure of electrocatalytic sites and ion diffusiontransfer facilitated. As a supercapacitor electrode material, PC-4K-CO2 porous carbon prepared at 800 C with synergic activation of KOH and CO2 showed the highest specific capacitance of 151 Fg at a current density of 0.5 Ag in the 1 M KOH electrolyte. Besides, the electrode prepared with the PC-4K-CO2 sample has achieved an excellent long-cycling life with only an 8.6 loss of its initial capacitance over 500 cycles even at a current density of 5 Ag. The current study emphasizes the environmental significance of turning pistachio shells into electrode materials for high-performance supercapacitors.

 Biomass-derived carbons have been extensively investigated for supercapacitor applications thanks to their advantages such as high specific capacitance value, low cost, environmental friendliness, and readily available natural materials. In this study, unique oxygen-rich porous carbons were successfully prepared by combining chemical KOH and physical CO2 activation methods. The physical and textural properties of as-prepared carbon materials are highly dependent on the synthesis conditions. The resulting PC-4K-CO2 porous carbon exhibited a hierarchical porous structure consisting of micropores, mesopores, and macropores along with a large surface area of 1318.4 cm2g, which allowed high exposure of electrocatalytic sites and ion diffusiontransfer facilitated. As a supercapacitor electrode material, PC-4K-CO2 porous carbon prepared at 800 C with synergic activation of KOH and CO2 showed the highest specific capacitance of 151 Fg at a current density of 0.5 Ag in the 1 M KOH electrolyte. Besides, the electrode prepared with the PC-4K-CO2 sample has achieved an excellent long-cycling life with only an 8.6 loss of its initial capacitance over 500 cycles even at a current density of 5 Ag. The current study emphasizes the environmental significance of turning pistachio shells into electrode materials for high-performance supercapacitors.

 Biomass-derived carbons have been extensively investigated for supercapacitor applications thanks to their advantages such as high specific capacitance value, low cost, environmental friendliness, and readily available natural materials. In this study, unique oxygen-rich porous carbons were successfully prepared by combining chemical KOH and physical CO2 activation methods. The physical and textural properties of as-prepared carbon materials are highly dependent on the synthesis conditions. The resulting PC-4K-CO2 porous carbon exhibited a hierarchical porous structure consisting of micropores, mesopores, and macropores along with a large surface area of 1318.4 cm2g, which allowed high exposure of electrocatalytic sites and ion diffusiontransfer facilitated. As a supercapacitor electrode material, PC-4K-CO2 porous carbon prepared at 800 C with synergic activation of KOH and CO2 showed the highest specific capacitance of 151 Fg at a current density of 0.5 Ag in the 1 M KOH electrolyte. Besides, the electrode prepared with the PC-4K-CO2 sample has achieved an excellent long-cycling life with only an 8.6 loss of its initial capacitance over 500 cycles even at a current density of 5 Ag. The current study emphasizes the environmental significance of turning pistachio shells into electrode materials for high-performance supercapacitors.

 Biomass-derived carbons have been extensively investigated for supercapacitor applications thanks to their advantages such as high specific capacitance value, low cost, environmental friendliness, and readily available natural materials. In this study, unique oxygen-rich porous carbons were successfully prepared by combining chemical KOH and physical CO2 activation methods. The physical and textural properties of as-prepared carbon materials are highly dependent on the synthesis conditions. The resulting PC-4K-CO2 porous carbon exhibited a hierarchical porous structure consisting of micropores, mesopores, and macropores along with a large surface area of 1318.4 cm2g, which allowed high exposure of electrocatalytic sites and ion diffusiontransfer facilitated. As a supercapacitor electrode material, PC-4K-CO2 porous carbon prepared at 800 C with synergic activation of KOH and CO2 showed the highest specific capacitance of 151 Fg at a current density of 0.5 Ag in the 1 M KOH electrolyte. Besides, the electrode prepared with the PC-4K-CO2 sample has achieved an excellent long-cycling life with only an 8.6 loss of its initial capacitance over 500 cycles even at a current density of 5 Ag. The current study emphasizes the environmental significance of turning pistachio shells into electrode materials for high-performance supercapacitors.

Makale detayları

Production of Porous Carbon by the Synergistic Chemical and Physical Activations and its Capacitive Performance

Yazarlar:

Murat Yılmaz | Mikail Baykal | Ahmed A. Farghaly | Müslüm Demir

Yayıncı:

Igdir University

Ana Başlıklar:

Kimya Mühendisliği

Dergi:

Iğdır Üniversitesi Fen Bilimleri Enstitüsü Dergisi Vol.13 Issue 3, pp.1888-1901

Belge Tipi:

Makale

Yayın Tarihi:

1/2023

Belge Dili:

İngilizce

Document ID (Org No.):

2001293787

pISSN:

2536-4618

Pistachio shells

supercapacitor

biochar

physical activating

KOH activating

Sayı

Makale detayları

Production of Porous Carbon by the Synergistic Chemical and Physical Activations and its Capacitive Performance

Yazarlar: Murat Yılmaz | Mikail Baykal | Ahmed A. Farghaly | Müslüm Demir

Yayıncı: Igdir University

Ana Başlıklar: Kimya Mühendisliği

Dergi: Iğdır Üniversitesi Fen Bilimleri Enstitüsü Dergisi Vol.13 Issue 3, pp.1888-1901

Belge Tipi: Makale

Yayın Tarihi: 1/2023

Belge Dili: İngilizce

Document ID (Org No.): 2001293787

pISSN: 2536-4618

Pistachio shells

supercapacitor

biochar

physical activating

KOH activating

Sayı

Yazarlar:

Murat Yılmaz | Mikail Baykal | Ahmed A. Farghaly | Müslüm Demir

Yayıncı:

Igdir University

Ana Başlıklar:

Kimya Mühendisliği

Dergi:

Iğdır Üniversitesi Fen Bilimleri Enstitüsü Dergisi Vol.13 Issue 3, pp.1888-1901

Belge Tipi:

Makale

Yayın Tarihi:

1/2023

Belge Dili:

İngilizce

Document ID (Org No.):

2001293787

pISSN:

2536-4618