Template-free synthesis of hierarchical porous carbon derived from low-cost biomass for high-performance supercapacitors

Wang, Li; Zheng, Yaolin; Zhang, Qinying; Zuo, Liang; Chen, Shouhui; Hou, Haoqing; Song, Yonghai

doi:10.1039/c4ra07955h

Cited by 55 publications

(33 citation statements)

References 47 publications

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“…Carbonization of natural products represents a facile and cost-effective route toward scalable production of ACs for application in waste water treatment [12], biosensor [13] and energy storage and conversion [14][15][16][17][18][19][20]. Up to now, carbon materials with various macroscopic morphologies and tailorable structures have been developed by using various natural biomass as starting materials [21].…”

Section: Introductionmentioning

confidence: 99%

Hierarchically porous carbon by activation of shiitake mushroom for capacitive energy storage

Cheng

Gao

Zang

et al. 2015

Carbon

389

149

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Section: Introductionmentioning

confidence: 99%

Hierarchically porous carbon by activation of shiitake mushroom for capacitive energy storage

Cheng

Gao

Zang

et al. 2015

Carbon

389

149

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“…The deconvoluted C 1 s shows four peaks at 284.6, 286.5, 287.8 and 289.7 eV, corresponding to sp 2 carbon, sp 3 carbon, C–OH and O=C=OH or C=O, respectively. The presence of sp 3 carbon indicated a large amount of defects, which is well agreed with the Raman spectral analysis. Similarly, the observed four distinct peaks of O 1 s spectra (Figure (c)) at 531.7 eV, 530.3 eV, 533.2 eV and 534.7 eV reveals the presence of C=O quinone type groups, C–OH phenol groups and/or C–O–C groups, carbonyl groups in anhydrides or carboxyls, and chemisorbed oxygen and/or water, respectively.…”

Section: Resultsmentioning

confidence: 99%

Fabrication of Solid‐State Flexible Fiber Supercapacitor Using Agave Americana Derived Activated Carbon and Its Performance Analysis at Different Conditions

et al. 2016

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Flexible fiber symmetric supercapacitors were fabricated using activated carbon derived from Agave americana having uniform pores because of chemical activation using two different activating agents, KOH (K‐AC) and NaOH (Na‐AC). The X‐ray diffraction analysis revealed the formation of amorphous carbon. The Fourier transform infrared and X‐ray photoelectron spectroscopies infers the presence of oxygen functional groups. The N2 adsorption/desorption study revealed a bimodal type pore size distribution in both the samples. A maximum specific surface area of 1122.7 m2 g−1 is obtained for K‐AC. The fabricated symmetric supercapacitor (K‐AC∥PVA+H2SO4∥K‐AC) exhibits a maximum length specific capacitance of 18 mF cm−1 with good capacitance retention and cycle life. Subsequently, the effects of temperature, device length, and flexibility of the device were studied by fabricating different shapes (normal, zigzag, and spiral). Finally, the device was tested in a practical application in a flexible mode, which was integrated with an energy harvesting system, indicating good reliability of the device.

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“…On the other hand, using biomasses to prepare activated carbons has recently become a popular trend in preparation of electrode materials for supercapacitors from the eco‐friendly and reproductive points of view. All sorts of waste biomasses, such as stems, leaves, and shells of agricultural crops, shells, feathers and gills of animals, and so on, have been used to prepare electrode materials for supercapacitors over the past years (Table S1) . Most of them have showed comparable even superior electrochemical performance to the commercial activated carbon.…”

Section: Introductionmentioning

confidence: 99%

Waste Biomass Based‐Activated Carbons Derived from Soybean Pods as Electrode Materials for High‐Performance Supercapacitors

et al. 2018

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In this paper, a simple yet effective chemical activation/carbonization strategy is presented to prepare a hierarchically porous activated carbon with multi-heteroatom (O, N, and P) selfdoping using waste soybean pods as carbon source. It is found that the resulting carbon activated by KOH possesses richer textural properties than the one activated by ZnCl 2 . With abundant micro-, mesopores and interconnected macropores, the KOH-activating carbon possesses a specific surface area up to 2245 m 2 g À1 and a large pore volume of 1.35 cm 3 g À1 . In a three-electrode system, the KOH-activating carbon can deliver a high specific capacitance of 321.1 F g À1 at a current density of 1 A g À1 in 6 M KOH aqueous electrolyte. It still can maintain 215.7 F g À1 at a current density of 10 A g À1 with a good rate capacity (67.2% retention). When used as symmetric electrode in 1 M Na 2 SO 4 neutral aqueous solution, the SPACÀK//SPACÀK supercapacitor can provide a high energy density up to 22.28 Wh kg À1 at a power density of 450 W kg À1 in a wide voltage window of 0-2.0 V, surpassing most of the previously reported waste biomass-based carbon materials. The impressive electrochemical performances as well as the low-cost scalable production manifest that the SPACÀK derived from waste soybean pods can be a promising electrode candidate for supercapacitor application.[a] Dr.

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Template-free synthesis of hierarchical porous carbon derived from low-cost biomass for high-performance supercapacitors

Cited by 55 publications

References 47 publications

Hierarchically porous carbon by activation of shiitake mushroom for capacitive energy storage

Hierarchically porous carbon by activation of shiitake mushroom for capacitive energy storage

Fabrication of Solid‐State Flexible Fiber Supercapacitor Using Agave Americana Derived Activated Carbon and Its Performance Analysis at Different Conditions

Waste Biomass Based‐Activated Carbons Derived from Soybean Pods as Electrode Materials for High‐Performance Supercapacitors

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