Surface Oxygen Engineering Catalytic Pore Tailoring of Coal-Based Needle Coke toward Capacitive Porous Carbon DOI
Dongdong Zhang,

Weijun Ma,

Jie Luo

et al.

Langmuir, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 7, 2024

Coal-based needle coke (CNC) is an ideal carbon precursor for capacitive materials due to its layered graphitic structure and high electrical conductivity. However, the pore-rich engineering structural inheriting of CNC-derived during conventional activation process present challenges. Herein, a surface oxygen catalytic pore tailoring strategy developed manipulate porous structures carbon. This synthesis uses air oxidation form oxygen-rich microregions on CNC surface, which can effectively tear graphite protective shell, accelerate bonding KOH with groups, catalyze etching reaction between potassium compounds atoms. Thanks low temperature 600 °C alkali-to-carbon ratio 1:1, obtained (PC) inherits long-range from CNC, specific areas be adjusted 182.6 855.4 m2 g–1 by adjusting temperature, far more than that PC (7.6 g–1) derived direct activation. The optimized shows capacitance 308.3 F at 0.5 A retention 212.2 20 68.8%. assembled supercapacitor delivers energy density 8.12 Wh kg–1 power 50.0 W ultralong cycle stability 99% Coulombic efficiency 100% after 50,000 cycles. study validates feasibility catalysis in soft enhancing capacitance.

Language: Английский

Basic magnesium carbonate template assisted co-carbonization of potassium citrate toward hierarchical porous carbon for supercapacitors DOI
Dongdong Zhang, Yi‐Hua Zhang, Lu Guo

et al.

Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: 1002, P. 175470 - 175470

Published: Oct. 1, 2024

Language: Английский

Citations

10
Rational engineering of meso-macroporous structured carbon materials for revealing capacitive mechanism DOI
Dongdong Zhang,

Weijun Ma,

Shaokai Wu

et al.

Journal of Energy Storage, Journal Year: 2024, Volume and Issue: 104, P. 114478 - 114478

Published: Nov. 6, 2024

Language: Английский

Citations

3
Sensitive electrochemiluminescent detection of hydroquinone using silver/luminol-functionalized carbon microspheres DOI
Hui Zhang, Ziqi Wang,

Yahui Ji

et al.

Analytical Biochemistry, Journal Year: 2025, Volume and Issue: unknown, P. 115842 - 115842

Published: March 1, 2025

Language: Английский

Citations

0
Interlaminar oxygen bridging assisted alkali activation constructs hydrophilic petroleum coke-based porous carbon for advanced aqueous supercapacitors DOI
Dongdong Zhang,

Weijun Ma,

Jiachuan Wang

et al.

Journal of Energy Storage, Journal Year: 2025, Volume and Issue: 117, P. 116236 - 116236

Published: March 14, 2025

Language: Английский

Citations

0
Yolk-shell CoFe2O4@hollow mesoporous carbon spheres for Levofloxacin hydrochloride removal: Synergy enhancement effect of adsorption and degradation DOI

Yanfei Geng,

Fucong Lv,

Guannan Dong

et al.

Environmental Research, Journal Year: 2025, Volume and Issue: 279, P. 121858 - 121858

Published: May 14, 2025

Language: Английский

Citations

0
Matching of Porous Carbon and Adsorbed Ions for High‐Specific‐Energy Asymmetric Supercapacitors DOI
Pan Liu, Peng Zhang,

Zhenlei Chen

et al.

Energy Technology, Journal Year: 2025, Volume and Issue: unknown

Published: April 21, 2025

In order to improve the energy density and stable operating voltage of supercapacitor, asymmetric supercapacitors (ASCs) are designed utilizing mesoporous carbon (MC) as anode, activated (AC) cathode, 1 mol kg −1 (1 m ) tetraethylammonium tetrafluoroborate/propylene carbonate (TEA‐BF 4 /PC) electrolyte. ASCs, MC anode provides broad ion transport channels significant charge storage capacity for TEA + , while AC with its large specific surface area, offers numerous adsorption sites BF − . Benefiting from different porous materials matched adsorbed ions, ASCs significantly enhance rate performance high‐voltage stability device. Electrochemical testing demonstrates that AC//MC exhibit an outstanding discharge capacitance 121 F g at a current 0.1 A 3.2 V, which is sustained about 65% 10 Additionally, device achieves remarkable 43.3 Wh largest power 7.3 kW This work theoretical direction design electrode process optimization in high‐specific‐energy double‐layer capacitors.

Language: Английский

Citations

0
Review on Carbon Nanostructures for Supercapacitors: Cutting-Edge Energy Storage Applications and Perspectives DOI

Sasmita Mishra,

Lingaraj Pradhan, Bikash Kumar Jena

et al.

Energy & Fuels, Journal Year: 2025, Volume and Issue: unknown

Published: May 29, 2025

Language: Английский

Citations

0
Microwave initiated synthesis of carbon nanosphere from plastic and its application as anode electrocatalyst support in direct methanol fuel cell DOI
Puthanpura Sasidharan Sreeja,

Vineesh Ravi

Diamond and Related Materials, Journal Year: 2024, Volume and Issue: 148, P. 111399 - 111399

Published: July 9, 2024

Language: Английский

Citations

1
Surface Oxygen Engineering Catalytic Pore Tailoring of Coal-Based Needle Coke toward Capacitive Porous Carbon DOI
Dongdong Zhang,

Weijun Ma,

Jie Luo

et al.

Langmuir, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 7, 2024

Coal-based needle coke (CNC) is an ideal carbon precursor for capacitive materials due to its layered graphitic structure and high electrical conductivity. However, the pore-rich engineering structural inheriting of CNC-derived during conventional activation process present challenges. Herein, a surface oxygen catalytic pore tailoring strategy developed manipulate porous structures carbon. This synthesis uses air oxidation form oxygen-rich microregions on CNC surface, which can effectively tear graphite protective shell, accelerate bonding KOH with groups, catalyze etching reaction between potassium compounds atoms. Thanks low temperature 600 °C alkali-to-carbon ratio 1:1, obtained (PC) inherits long-range from CNC, specific areas be adjusted 182.6 855.4 m2 g–1 by adjusting temperature, far more than that PC (7.6 g–1) derived direct activation. The optimized shows capacitance 308.3 F at 0.5 A retention 212.2 20 68.8%. assembled supercapacitor delivers energy density 8.12 Wh kg–1 power 50.0 W ultralong cycle stability 99% Coulombic efficiency 100% after 50,000 cycles. study validates feasibility catalysis in soft enhancing capacitance.

Language: Английский

Citations

1