Simple synthesis of hierarchical porous carbon from Enteromorpha prolifera by a self-template method for supercapacitor electrodes

Gao, Yuan; Zhang, Wenli; Yue, Qinyan; Sun, Yuanyuan; Kong, Jiaojiao; Zhao, Pei

doi:10.1016/j.jpowsour.2014.07.115

Cited by 128 publications

(58 citation statements)

References 36 publications

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“…The cyclic voltammogram of NCM-700 electrode shown in Fig. 7b retains its identical basic shapes at different scan rates, indicating stable and reproducible capacitance behavior [42].…”

Section: Resultsmentioning

confidence: 88%

Nitrogen-containing carbon microspheres for supercapacitor electrodes

Zhu

Wang

Gan

et al. 2015

Electrochimica Acta

146

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“…The cyclic voltammogram of NCM-700 electrode shown in Fig. 7b retains its identical basic shapes at different scan rates, indicating stable and reproducible capacitance behavior [42].…”

Section: Resultsmentioning

confidence: 88%

Nitrogen-containing carbon microspheres for supercapacitor electrodes

Zhu

Wang

Gan

et al. 2015

Electrochimica Acta

146

View full text Add to dashboard Cite

“…However, the low intensity and broadness of the two peaks indicated a low degree of graphitization for the carbons produced. The peak appearing at around 18° observed in the x‐ray diffraction pattern of the AHC‐ 600 corresponds to residual inorganic component of the algae, as previously described by Yue et al …”

Section: Resultsmentioning

confidence: 95%

High Performance N‐Doped Carbon Electrodes Obtained via Hydrothermal Carbonization of Macroalgae for Supercapacitor Applications

et al. 2018

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The conversion of bio‐waste into useful porous carbons constitutes a very attractive approach to contribute to the development of sustainable energy economy, even more as they can be used in energy storage devices. Here we report the synthesis of N‐doped carbons from hydrothermal carbonization of macroalgae, Enteromorpha prolifera (EP), followed by a mild KOH activation step. The obtained N‐doped carbons exhibited surface areas of up to ∼2000 m2/g with N‐loadings varied in the range of 1.4∼2.9 at %. By modifying activation temperature, we were able to tune the surface chemistry and porosity, achieving excellent control of their properties. The specific capacitance reached values of up to 200 F/g at 1 A/g in 6 M KOH for the sample obtained at activation temperature of 700 °C (AHC‐700). The symmetric supercapacitor using the sample activated at 800 °C (AHC‐800) as electrodes exhibited the highest cycling stability of the samples studied in this work, with capacitance retention of up to 96 % at 10 A/g, even after 10,000 cycles, constituting the highest reported for biomass‐derived carbon electrodes. These results show the great potential of N‐doped carbons as electrodes for supercapacitors and confirm the excellent electrochemical properties of biomass‐derived carbons in energy storage technologies.

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“…The specific capacitance of Chem-900-2( Figure 1a good cycling stability of the Chem-900-2e lectrode material, with ac apacitance retention of approximately 92 %a fter 10 000 charge/discharge cyclesc onducted at 10 Ag À1 within the potential window À1a nd À0.1 Vi nathree-electrode system ( Figure 1d). [49][50][51][52][53][54][55][56][57][58][59][60][61] Apparently,t he high capacitance of Chem-900-2 carbon can be attributed to its advantageous micro-/mesoporous structure. Probably,t he slight decrease in capacitance was caused by spontaneous formation of cracks and exfoliationo ft he electrode active mass at some surface segments as ar esult of gas evolution.…”

Section: Electrochemical Experiments In Athree-electrode Systemmentioning

confidence: 99%

“…Probably,t he slight decrease in capacitance was caused by spontaneous formation of cracks and exfoliationo ft he electrode active mass at some surface segments as ar esult of gas evolution. [62] The majority of carbon materials described in thel iterature [49][50][51][52][53][54][55][56][57][58][59][60][61] have microporouss tructures, whicha re responsible for the high SSA BET values. [49][50][51][52][53][54][55][56][57][58][59][60][61] Apparently,t he high capacitance of Chem-900-2 carbon can be attributed to its advantageous micro-/mesoporous structure.…”

Section: Electrochemical Experiments In Athree-electrode Systemmentioning

confidence: 99%

Sustainable Utilization of Biomass Refinery Wastes for Accessing Activated Carbons and Supercapacitor Electrode Materials

et al. 2018

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Biomass processing wastes (humins) are anticipated to become a large-tonnage solid waste in the near future, owing to the accelerated development of renewable technologies based on utilization of carbohydrates. In this work, the utility of humins as a feedstock for the production of activated carbon by various methods (pyrolysis, physical and chemical activation, or combined approaches) was evaluated. The obtained activated carbons were tested as potential electrode materials for supercapacitor applications and demonstrated combined micro- and mesoporous structures with a good capacitance of 370 F g (at a current density of 0.5 A g ) and good cycling stability with a capacitance retention of 92 % after 10 000 charge/discharge cycles (at 10 A g in 6 m aqueous KOH electrolyte). The applicability of the developed activated carbon for practical usage as a supercapacitor electrode material was demonstrated by its successful utilization in symmetric two-electrode cells and by powering electric devices. These findings provide a new approach to deal with the problem of sustainable wastes utilization and to advance challenging energy storage applications.

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Simple synthesis of hierarchical porous carbon from Enteromorpha prolifera by a self-template method for supercapacitor electrodes

Cited by 128 publications

References 36 publications

Nitrogen-containing carbon microspheres for supercapacitor electrodes

Nitrogen-containing carbon microspheres for supercapacitor electrodes

High Performance N‐Doped Carbon Electrodes Obtained via Hydrothermal Carbonization of Macroalgae for Supercapacitor Applications

Sustainable Utilization of Biomass Refinery Wastes for Accessing Activated Carbons and Supercapacitor Electrode Materials

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