Supercapacitor performance of corn stover-derived biocarbon produced from the solid co-products of a hydrothermal liquefaction process

Shell, Katelyn M.; Rodene, Dylan; Amar, Vinod; Thakkar, Anuj; Maddipudi, Bharathkiran; Kumar, Sandeep; Shende, Rajesh V.; Gupta, Ram B.

doi:10.1016/j.biteb.2021.100625

Cited by 10 publications

(25 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The majority of pore volume comes from pores ranging from 0.8 to 3 nm, which is described as ideal for biocarbon‐based materials. [ 15 ] A summary of BET results is described in Table 2 .…”

Section: Resultsmentioning

confidence: 99%

“…Moreover, a statistical analysis performed on biocarbon materials by Shell et al demonstrated that pore volume bears one of the greatest effects on electrochemical performance, further supporting these results. [ 15 ] The theoretical specific capacitance of activated porous carbons is 550 F g −1 . [ 32 ] These results reached 98.4% of this value in a lower molarity electrolyte, indicating an enhanced biocarbon structure suitable for high‐performance electrochemical applications.…”

Section: Resultsmentioning

confidence: 99%

“…Recovered WH biocarbon was fabricated into supercapacitor electrodes though a standard technique. [ 15 ] Electrode ink was prepared by mixing WH biocarbon with Super P and PTFE in an 8:1:1 ratio. A few drops of water were added to form a viscous slurry, which was evenly spread on reduced nickel foam substrate (1 cm × 3 cm).…”

Section: Methodsmentioning

confidence: 99%

“…[ 14 ] Biomass offers a carbon‐rich framework suitable for electrochemical applications that can be activated and graphitized into the highly porous, stable, and versatile materials. [ 15 ] Currently, biomass activation into biocarbon requires the use of metal catalysts, particularly Ni. This method, though effective, introduces additional steps in biocarbon production, which can negatively affect process scale‐up.…”

Section: Introductionmentioning

confidence: 99%

“…This method, though effective, introduces additional steps in biocarbon production, which can negatively affect process scale‐up. [ 15 ] The benefits of embedded catalysts from phytoremediation eliminate the necessity for post‐treatment, provide a low‐cost catalyst source, and generate an enhanced carbon framework advantageous for supercapacitor applications.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Phytoremediation of Nickel via Water Hyacinth for Biocarbon‐Derived Supercapacitor Applications

et al. 2021

Self Cite

View full text Add to dashboard Cite

Water hyacinth (Eichhornia crassipes, WH) is cultivated in a hydroponic system containing various concentrations of Ni2+ to demonstrate phytoremediation techniques as a facile, low‐cost, and sustainable method for synthesizing high‐performance biocarbon electrode materials. A high specific capacitance of 541 F g−1 in 2 m potassium hydroxide (KOH) is achieved for WH‐5 biocarbon with an energy density of 30.5 Wh kg−1. Materials are assembled into a coin cell supercapacitor capable of lasting 10 000 cycles with 100% capacitance retention. Surface area characterizations support these results with an SBET of 3429 m2 g−1, a VBET of 2.13 cm3 g−1, and an Sp avg of 2.5 nm, indicating enhanced pore formation and functional group cleaving. Raman spectroscopy, attenuated total reflectance Fourier transform IR (ATR‐FTIR), and X‐ray diffraction (XRD) give further insight into physical characteristics of the biocarbon that lead to improved electrochemical performance. This work describes an optimal concentration of preabsorbed Ni2+ catalyst (5 ppm in H2O) capable of achieving 98% of theoretical capacitance and value‐added environmental cleanup associated with synergistic remedial techniques.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Phytoremediation of Nickel via Water Hyacinth for Biocarbon‐Derived Supercapacitor Applications

et al. 2021

Self Cite

View full text Add to dashboard Cite

show abstract

Corn stover‐derived porous carbon for asymmetric supercapacitors

et al. 2023

Self Cite

View full text Add to dashboard Cite

In this investigation, hydrothermal liquefaction‐derived hydrochar from pulverized corn stover (avg. particle size 1.12 mm and ash content 6.75 wt%) is chemically activated with aqueous KOH in the presence of Pluronic F127 surfactant and thermally treated further up to 800°C to generate porous carbon (POC) with higher specific surface area and porosity. POC obtained under different processing conditions is thoroughly characterized by Brunauer‐Emmett‐Teller surface area analyzer, Fourier transform infrared spectroscopy, Raman spectroscopy, scanning electron microscopy, and transmission electron microscopy. Metallic impurity present in POC is characterized by inductively coupled plasma mass spectrometry. Higher specific surface area POC is observed with the use of the surfactant during the activation process. Fully characterized POC is used with (Mn, Ti)‐mixed oxide electrode to fabricate asymmetric supercapacitor (ASC). Specific capacitance of ASC is measured by cyclic voltammetry (CV) technique using Gamry G‐300 potentiostat/galvanostat/ZRA. CV plots are obtained with different voltage scan rates whereas galvanostatic charge‐discharge plots are studied by varying the current density. Renewable corn stover‐derived POC prepared using Pluronic F127/KOH activation method is found to be highly suitable as an electrode material because of higher capacitance and electrochemical stability over 100 charging‐discharging cycles.

show abstract

A review on the recent progress of the plant-based porous carbon materials as electrodes for high-performance supercapacitors

et al. 2023

View full text Add to dashboard Cite

Supercapacitor performance of corn stover-derived biocarbon produced from the solid co-products of a hydrothermal liquefaction process

Cited by 10 publications

References 42 publications

Phytoremediation of Nickel via Water Hyacinth for Biocarbon‐Derived Supercapacitor Applications

Phytoremediation of Nickel via Water Hyacinth for Biocarbon‐Derived Supercapacitor Applications

Corn stover‐derived porous carbon for asymmetric supercapacitors

A review on the recent progress of the plant-based porous carbon materials as electrodes for high-performance supercapacitors

Contact Info

Product

Resources

About