Activated carbon from grass – A green alternative catalyst support for water electrolysis

Kalyani, P.; Anitha, A.; Darchen, André

doi:10.1016/j.ijhydene.2013.06.022

Cited by 38 publications

(26 citation statements)

References 47 publications

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“…Based on Table 4, along with the addition of CNT composite to every variation, the capacitance generated also increased. This is in accordance with the study conducted by Khomenko, et al [15], in which the addition of 30% commercial CNT MnO2 electrode increased the capacitance from 0.1 to 138 F/g.…”

Section: Figuresupporting

confidence: 93%

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The Effect of Carbon Nanotube Composite Addition on Biomass-Based Supercapacitor

Widiatmoko

Devianto

Nurdin

et al. 2016

J. Eng. Technol. Sci.

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Abstract. Electric vehicles are set to become a most attractive alternative transportation mode due to their high efficiency and low emission. Electric vehicles require an efficient energy storage system, e.g. a supercapacitor. Coconut shells have high lignocellulosic content and are not being fully utilized in Indonesia. The lignocellulose could be converted into activated carbon for use as the electrode on a hybrid supercapacitor. This research focused on studying the effect of the addition of carbon nanotube (CNT) composite to porous graphene-like nanosheets (PGNS) as the electrode on a hybrid supercapacitor. The PGNS and CNT composite were synthesized via simultaneous activation and carbonization. Nickel oxide was used as the counter electrode. The CNT composite had a large surface area of 1374.8 m 2 g -1 , pore volume of 1.1 cm 3 g, and pore size of 3.2 nm. On the other hand, the PGNS had a surface area of 666.1 m 2 g -1 , pore volume of 0.47 cm 3 g , and pore size of 2.8 nm. The electrode pair between the NiO and the activated carbon achieved 5.69 F/g and 94.1% cycle durability after 10 charging and discharging cycles. The composite had an energy density of 0.38 W h kg -1 . The aim of this research was to provide an alternative formula for producing high-performance supercapacitor materials.

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Section: Figuresupporting

confidence: 93%

“…Good conductivity of CNT also plays a role in increasing capacitance [15]. The generated capacitance for each variation is shown in Table 4.…”

Section: Figurementioning

confidence: 99%

The Effect of Carbon Nanotube Composite Addition on Biomass-Based Supercapacitor

Widiatmoko

Devianto

Nurdin

et al. 2016

J. Eng. Technol. Sci.

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“…Apart from methanol oxidation and ORR, biomass‐derived carbon materials have been used as electrode in dye‐sensitized solar cells,106 water electrolysis for hydrogen production107, 108 etc. Chen et al.…”

Section: Functionalization Of Carbonaceous Materials For Catalysismentioning

confidence: 99%

Biomass‐Derived Porous Carbon Materials: Synthesis and Catalytic Applications

et al. 2015

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Novel biomass‐derived porous carbons are attractive candidates for the preparation of carbon‐supported catalysts with a wide range of catalytic applications. Such carbonaceous catalysts are environmentally benign and could provide a cost‐competitive advantage as compared to existing heterogeneous catalysts. Tunable surface properties of carbon materials and excellent physical properties (e.g., hydrophobicity, chemically inert nature, etc.) are compatible with diverse catalysis reactions including organic transformations, as well as electro‐ and photochemical processes in aqueous solutions. This contribution provides an overview on the utilization of different biomass feedstocks and/or biomass‐derived precursors for the synthesis of carbonaceous materials to design advanced catalytic systems and their emerging applications in catalysis.

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“…Grass is a class of biomass easily found in urban areas, and was reported previously to produce value added products such as activated carbon (Kalyani et al 2013), nitrogen-doped carbon materials (Liu et al 2012), and biogas (McEniry et al 2014;Meyer et al 2014). However, few studies have been done that provide valuable information regarding the characteristics of hydrochar from HTC lawn grass at different residence times.…”

Section: Introductionmentioning

confidence: 99%

Chemical, Energetic, and Structural Characteristics of Hydrothermal Carbonization Solid Products for Lawn Grass

Guo¹,

Dong²,

Liu³

et al. 2015

BioResources

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Hydrothermal carbonization (HTC) of lawn grass was carried out at 200 °C and 240 °C for 30 to 180 min. The chemical, energetic, and structural characteristics of HTC solid residues were investigated. Results from HTC experiments indicate that solid mass yield of all solid residues was 31 to 50%. The hydrogen/carbon (H/C) and oxygen/carbon (O/C) atomic ratios of all solid residues were 1.17 to 1.64 and 0.45 to 0.65, respectively. The higher heating value (HHV) increased up to 20.54 MJ/kg with increasing HTC residence time at 240 °C for 180 min. Both XRD patterns and FTIR spectra show that differences occur with samples treated as compared to the raw material. Solid hydrochar exhibited higher ordered structure characteristics and was mainly derived from amorphous components degradation when the residence time was increased from 30 to 180 min at 200 °C, while hydrochar formed from cellulose components degradation with increased residence time at 240 °C. According to the results studied, it was found that prolonged residence time was favorable to the formation of hydrochar from lawn grass.

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Activated carbon from grass – A green alternative catalyst support for water electrolysis

Cited by 38 publications

References 47 publications

The Effect of Carbon Nanotube Composite Addition on Biomass-Based Supercapacitor

The Effect of Carbon Nanotube Composite Addition on Biomass-Based Supercapacitor

Biomass‐Derived Porous Carbon Materials: Synthesis and Catalytic Applications

Chemical, Energetic, and Structural Characteristics of Hydrothermal Carbonization Solid Products for Lawn Grass

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