Transforming waste sugar solution into N-doped hierarchical porous carbon for high performance supercapacitors in aqueous electrolytes and ionic liquid

Wu, Yan; Cao, Jing‐Pei; Zhou, Zhi; Zhao, Xiao-Yan; Zhuang, Qi-Qi; Wei, Yu-Lei; Zhao, Ming; Zhao, Yunpeng; Bai, Hongcun

doi:10.1016/j.ijhydene.2020.08.183

Cited by 21 publications

(11 citation statements)

References 71 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Besides, Wu. et al 23 converted waste sugar solution into HPCs for EDLCs and investigated their electrochemical performances in aqueous and ionic electrolytes. Ma et al 24 used a one-pot green synthesis strategy to produce nitrogen-doped HPC using a recyclable salt template and applied it as electrodes in a symmetric supercapacitor.…”

Section: Introductionmentioning

confidence: 99%

Hierarchical porous carbon foam electrodes fabricated from waste polyurethane elastomer template for electric double-layer capacitors

Udayakumar

Tóth

Wiinikka

et al. 2022

Sci Rep

View full text Add to dashboard Cite

Plastic waste has become a major global environmental concern. The utilization of solid waste-derived porous carbon for energy storage has received widespread attention in recent times. Herein, we report the comparison of electrochemical performance of porous carbon foams (CFs) produced from waste polyurethane (PU) elastomer templates via two different activation pathways. Electric double-layer capacitors (EDLCs) fabricated from the carbon foam exhibited a gravimetric capacitance of 74.4 F/g at 0.1 A/g. High packing density due to the presence of carbon spheres in the hierarchical structure offered excellent volumetric capacitance of 134.7 F/cm3 at 0.1 A/g. Besides, the CF-based EDLCs exhibited Coulombic efficiency close to 100% and showed stable cyclic performance for 5000 charge–discharge cycles with good capacitance retention of 97.7% at 3 A/g. Low equivalent series resistance (1.05 Ω) and charge transfer resistance (0.23 Ω) due to the extensive presence of hydroxyl functional groups contributed to attaining high power (48.89 kW/kg). Based on the preferred properties such as high specific surface area, hierarchical pore structure, surface functionalities, low metallic impurities, high conductivity and desirable capacitive behaviour, the CF prepared from waste PU elastomers have shown potential to be adopted as electrodes in EDLCs.

show abstract

Section: Introductionmentioning

confidence: 99%

Hierarchical porous carbon foam electrodes fabricated from waste polyurethane elastomer template for electric double-layer capacitors

Udayakumar

Tóth

Wiinikka

et al. 2022

Sci Rep

View full text Add to dashboard Cite

show abstract

“…The XRD patterns of samples PC-700-4, 5-BHPC-700-4, and 5-NBHPC-700-4 are shown in Figure c. The two wide diffraction peaks appearing near 26° and 43° correspond to the (002) and (100) planes of the amorphous carbon layer, respectively, demonstrating that the porous carbon materials of PC-700-4, 5-BHPC-700-4, and 5-NBHPC-700-4 all belong to the amorphous structure . Generally speaking, the (002) plane can represent the degree of carbon-graphitization to a certain extent.…”

Section: Resultsmentioning

confidence: 99%

Construction of N, O Codoped Petal-like Hierarchical Porous Carbon with an Ultrahigh Specific Surface from Waste Bamboo for High-Performance Supercapacitors

Qiu

Zhang

Zhao

et al. 2022

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

Considering the problems of environmental pollution and treatment costs generated by renewable waste biomass on a global scale, the development of high-performance electrodes utilizing plentiful natural waste biomass as sustainable precursors is essential to facilitate the practical application of supercapacitors. Hence, we develop a facile and efficient method to construct waste bamboo shavings into petal-like hierarchical porous carbon electrode materials with an ultrahigh specific surface area and N, O codoped interfaces through H 3 PO 4 -catalyzed hydrothermal pretreatment combined with coactivation by KOH/melamine. The effects of optimal regulation of pore structure and surface modification (heteroatom doping) on the superior electrochemical properties of carbon materials are investigated in depth. The derived carbon materials presenting an excellent potential for practical applications of supercapacitors are mainly attributed to their large specific surface area (3392 m 2 g −1 ), prominent pore volume (2.081 m 3 g −1 ), and petal-like hierarchical porous structure with abundant N, O content, which results in rapid ion diffusion and adequate electrical charge storage as well as contributed pseudocapacitance. 5-BHPC-700-4 exhibits attractive electrochemical properties in a 6.0 M KOH electrolyte, including a delightful capacitance (501.6 F g −1 at 0.5 A g −1 in a three-electrode system) and superior cycling stability (94.2% capacitance retention after 10,000 cycles at 5.0 A g −1 ). The assembled symmetrical supercapacitor device achieves an impressive energy density of 15.3 Wh kg −1 at a power density of 290 W kg −1 . This work provides a valuable reference for the design and preparation of biomass-based hierarchical porous carbon with outstanding supercapacitor performance and low cost.

show abstract

“…Acidic aqueous electrolytes constitute an important part of these studies 89 . Although 1.0 M sulfuric acid was generally used as the acidic electrolyte, the effects of other acidic electrolytes had not been studied much 90,91 . In this study, HNO 3 was used as an electrolyte since there would be an increase in capacity with a synergistic effect.…”

Section: Resultsmentioning

confidence: 99%

“…89 Although 1.0 M sulfuric acid was generally used as the acidic electrolyte, the effects of other acidic electrolytes had not been studied much. 90,91 In this study, HNO 3 was used as an electrolyte since there would be an increase in capacity with a synergistic effect. It has been reported that the electrode and electrolyte components containing similar atoms cause a synergistic effect, resulting in a significant improvement in capacity.…”

Section: Cyclic Voltammetric Characterizations Of Symmetrical Coin Cellsmentioning

confidence: 99%

One‐stepsynthesis of nitrogen‐doped graphene powders and application of them ashigh‐performancesymmetrical coin cell supercapacitors in different aqueous electrolyte

Arvas

Karatepe

Gençten

et al. 2022

Intl J of Energy Research

View full text Add to dashboard Cite

Summary In this study, symmetric supercapacitors in the form of coin cells were produced by using N‐doped graphene powders as electrode components. Nitrogen‐doped graphene powders were prepared by Yucel's Method with cyclic voltammetry at different potential ranges for selective modification of the powders with functional groups. Electrochemical, spectroscopic, and microscopic characterizations of N‐doped graphene powders were carried out. The formation of graphene layers was supported by scanning electron microscopy and Raman analysis. Functional groups formed on the surfaces of N‐doped graphene powders were determined by X‐ray photoelectron spectroscopy. Specific capacitances of symmetric supercapacitors prepared with N‐doped graphene powders were determined by cyclic charge‐discharge tests. The highest specific capacitance, energy and power values were determined as 235.3 F.g−1, 158.2 Wh.kg−1 and 1760 W.kg−1, respectively.

show abstract

Transforming waste sugar solution into N-doped hierarchical porous carbon for high performance supercapacitors in aqueous electrolytes and ionic liquid

Cited by 21 publications

References 71 publications

Hierarchical porous carbon foam electrodes fabricated from waste polyurethane elastomer template for electric double-layer capacitors

Hierarchical porous carbon foam electrodes fabricated from waste polyurethane elastomer template for electric double-layer capacitors

Construction of N, O Codoped Petal-like Hierarchical Porous Carbon with an Ultrahigh Specific Surface from Waste Bamboo for High-Performance Supercapacitors

One‐stepsynthesis of nitrogen‐doped graphene powders and application of them ashigh‐performancesymmetrical coin cell supercapacitors in different aqueous electrolyte

Contact Info

Product

Resources

About