Bi-functional porous carbon spheres derived from pectin as electrode material for supercapacitors and support material for Pt nanowires towards electrocatalytic methanol and ethanol oxidation

Fan, Yang; Liu, Peifang; Yang, Zi-Juan; Jiang, Tongwu; Yao, Kaili; Han, Ran; Huo, Xin-Xin; Xiong, Yun-Yi

doi:10.1016/j.electacta.2015.02.157

Cited by 81 publications

(33 citation statements)

References 48 publications

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“…One can see that the EPCs synthesized via microwave heating exhibit superior electrochemical performance compared to most of the PC materials synthesized via conventional methods. [53][54][55][56][57][58][59][60] These excellent electrochemical properties motivated us to analyze the electrochemical performance of EPC-based supercapacitor electrode materials. The CV curves of an EPC-8/EPC-8 symmetric supercapacitor in 1 M Na 2 SO 4 and 6 M KOH electrolytes (Figures 5a and 6a, respectively) are more rectangular in shape compared to a three-electrode configuration based on the excellent reversible capacitive behavior of the supercapacitor.…”

Section: Electrochemical Propertiesmentioning

confidence: 99%

Direct Microwave Conversion from Lignin to Micro/Meso/Macroporous Carbon for High‐Performance Symmetric Supercapacitors

et al. 2019

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Enzymatic hydrolysis lignin (EHL) is a common biomass that is difficult to use for the synthesis of porous carbon (PC) via direct microwave heating because it absorbs very little microwave energy. In this study, a novel method was developed to synthesize high‐performance PC directly from EHL using only 8 min of microwave heating. The resulting PC exhibits a high specific surface area of 2482 m2 g−1 and a hierarchical pore distribution with a high mesopore content of 35.6 % and oxygen content of 17.1 %. Nitrogen (as a protecting gas) passes through water molecules provided by steam to absorb microwave energy and acts as a physical porogen to form mesopores. Using solid KOH allows one to bypass the time‐consuming drying process and generate sufficient micropores. Additionally, fast self‐pyrolysis and a high heating rate lead to the generation of both mesopores and macropores in a PC framework. Furthermore, multiple active centers can be formed during microwave heating and subsequently stabilized by oxidation once the PC is exposed to an air atmosphere, resulting in the attachment of oxygen functional groups to the PC surface. Based on these desirable physicochemical characteristics, the PC electrodes fabricated in this study exhibit a high specific capacitance of 338 F g−1 at 1 A g−1 and high capacitance retention of 86 % at 10 A g−1. The final PC‐based supercapacitor delivers a maximum energy density of 17.1 Wh kg−1 in a Na2SO4 electrolyte and 8.6 Wh kg−1 in a KOH electrolyte.

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Section: Electrochemical Propertiesmentioning

confidence: 99%

Direct Microwave Conversion from Lignin to Micro/Meso/Macroporous Carbon for High‐Performance Symmetric Supercapacitors

et al. 2019

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“…Most of the sugar-based carbon spheres, synthesized by the hydrothermal method, has solid sphere structure which is not conducive to the transport and diffusion of the electrolyte ions inside the electrode materials. Therefore, porous and hollow carbon spheres have been received widespread attention [44][45][46][47]. Gao et al [48] synthesized N-doped porous carbon spheres (N-CSs) with high SSAs (2105.9 m 2 g −1 ) and high porosity (1.14 cm 3 g −1 ) by fermented rice as starting materials.…”

Section: Spherical Structurementioning

confidence: 99%

“…All the characteristics strongly suggest that biomass-derived carbon could be qualified for the electrode of supercapacitors. To date, various biomass-derived carbon materials with high SSA, abundant pore structure and modified functional groups have been prepared, such as the stems [87,102,157,[177][178][179], leaves [34,90,101,103,126], seeds [48,77,79,154], fructus [180][181][182], pericarp [88,89] of plants, nut shells [94,143,[183][184][185], fungi [53,109,[186][187][188], abandoned food [96,131,189], shellfish [49,72,133], animal tissue [112,115,124], polysaccharide [44,85,147,155,190], protein [137].…”

Section: Biomass-derived Carbon Materials For Energy Storage Applicatmentioning

confidence: 99%

Biomass-derived carbon materials with structural diversities and their applications in energy storage

2017

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Currently, carbon materials, such as graphene, carbon nanotubes, activated carbon, porous carbon, have been successfully applied in energy storage area by taking advantage of their structural and functional diversity. However, the development of advanced science and technology has spurred demands for green and sustainable energy storage materials. Biomass-derived carbon, as a type of electrode materials, has attracted much attention because of its structural diversities, adjustable physical/chemical properties, environmental friendliness and considerable economic value. Because the nature contributes the biomass with bizarre microstructures, the biomass-derived carbon materials also show naturally structural diversities, such as 0D spherical, 1D fibrous, 2D lamellar and 3D spatial structures. In this review, the structure design of biomass-derived carbon materials for energy storage is presented. The effects of structural diversity, porosity and surface heteroatom doping of biomass-derived carbon materials in supercapacitors, lithium-ion batteries and sodium-ion batteries are discussed in detail. In addition, the new trends and challenges in biomass-derived carbon materials have also been proposed for further rational design of biomass-derived carbon materials for energy storage.

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“…Electrochemical supercapacitors having higher power density than batteries and higher energy density than conventional capacitors are highly attractive energy-storage devices, and supercapacitors thus fill in the gap between batteries and conventional capacitors [1,2]. Recently, carbon-based materials are a kind of attractive electrode materials for supercapacitors application [3,4].…”

Section: Introductionmentioning

confidence: 99%

Dawson-type Polyoxometalate and Carbon nanotubes Nanocomposite for high-performance Supercapacitor Electrodes

Liu¹

2015

Proceedings of the 2015 International Power, Electronics and Materials Engineering Conference

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Abstract.A nanocomposite film based on Dawson-type polyoxometalate cluster (P 2 W 18 ) carbon nanotubes (CNTs) and chitosan (CS) were prepared on quartz and ITO substrates by layer-by-layer (LbL) method. These films were characterized by UV-vis spectroscopy, cyclic voltammetry (CV) and Scanning electron micrographs (SEM). It was shown that the multilayer film are uniform and stable. The multilayer film displays high supercapacitor performances by incorporation of CNTs into the P 2 W 18 film. The combined activity of P 2 W 18 and CNTs components in the composite film can store and release charge for electrochemical supercapacitors, leading to excellent specific capacitance value of 0.38 mF cm -2 .

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Bi-functional porous carbon spheres derived from pectin as electrode material for supercapacitors and support material for Pt nanowires towards electrocatalytic methanol and ethanol oxidation

Cited by 81 publications

References 48 publications

Direct Microwave Conversion from Lignin to Micro/Meso/Macroporous Carbon for High‐Performance Symmetric Supercapacitors

Direct Microwave Conversion from Lignin to Micro/Meso/Macroporous Carbon for High‐Performance Symmetric Supercapacitors

Biomass-derived carbon materials with structural diversities and their applications in energy storage

Dawson-type Polyoxometalate and Carbon nanotubes Nanocomposite for high-performance Supercapacitor Electrodes

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