Sulfonated rGO from waste dry cell graphite rod and its hybrid with PANI as electrode for supercapacitor

Ega, Sai Prasad; Srinivasan, Palaniappan

doi:10.1007/s10008-021-04988-w

Cited by 7 publications

(11 citation statements)

References 42 publications

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“…The XRD pattern of PANI shows 2 θ values at 6.7, 14.3, 21.3, and 25.7° and their corresponding lattice planes are (001), (011), (020), and (200), respectively 42 . Besides, a weak and broad XRD peak around 43.0° indicates the presence of graphite in the PANI structure.…”

Section: Resultsmentioning

confidence: 99%

“…Further, a third weight loss where slow degradation of PANI started after 350°C and steady weight loss is observed up to 800°C due to the decomposition of polymer chain structure of PANI. Finally, the total weight loss observed from initial to final degradation (ambient to 800°C) is 47 wt% 42,51 …”

Section: Resultsmentioning

confidence: 99%

“…The calculated specific capacitance ( C s ) values for AC and PANI electrodes are 120 and 242 F g −1 at a current density of 1 A g −1 , respectively. Further, both the electrodes showed a vertical voltage drop of around 50 mV at the beginning of the discharge curve because of internal resistance at the electrode/electrolyte interface 42 …”

Section: Resultsmentioning

confidence: 99%

“…The presence of moisture in SBP suggests that MnO 2 has water molecules 40,41 . In addition, the FT‐IR spectrum of SBP showed an absorption peak at 1525 and 1625 cm −1 due to the CC stretching vibration, indicating the presence of graphite in SBP powder 26,42 …”

Section: Resultsmentioning

confidence: 99%

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Polyanilines from spent battery powder and activated carbon: Electrodes for asymmetric supercapacitor cell

Ega

Karri

Srinivasan

2022

J of Applied Polymer Sci

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Polyanilines from spent battery powder and activated carbon: Electrodes for asymmetric supercapacitor cell

Ega

Karri

Srinivasan

2022

J of Applied Polymer Sci

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“…Using an electrochemical technique, two-dimensional (2D) graphene oxide (GO) was derived from 3D graphite rods of used batteries. 12 Ega and Srinivasan 13 investigated the use of sulfonated reduced GO (rGO) from graphite rods of spent batteries as an electrode in supercapacitors.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of chemically exfoliated reduced graphene oxide from as-grated graphite rods recovered from used household batteries for utilization in tribological applications

Manokaran

Manikkavasagan

Nesappan

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part L:

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The research objective of this work is to reuse graphite rods recovered from used batteries and utilize them as an additive in SAE20W40 oil to improve the engine parts’ lubrication ability and wear resistance. The graphite rods are grated to obtain ultra-fine particles and then chemically exfoliated using an Improved Hummer's process that results in graphene oxide. Then, it is thermally reduced at 350 °C to yield reduced graphene oxide. Different ratios (0.25, 0.50, 0.75, and 1.00 wt.%) of as-grated graphite particles and reduced graphene oxide were dispersed in the above oil to form a colloidal solution and then used for tribological studies. The graphite particles and synthesized reduced graphene oxide were characterized using X-ray diffraction, Raman spectroscopy, and high-resolution transmission electron microscopy. X-ray diffraction data confirms the presence of graphite, graphene oxide, and reduced graphene oxide in the prepared powders and matches with the standard files. High-resolution transmission electron microscopy images reveal the presence of multilayer sheets with an interplanar distance of 0.34 nm having wrinkles, folds, and gas holes. The G and D band positions of Raman spectra prove the formation of oxygenated functional groups, and the ID/ IG ratio confirms the defects in graphene oxide and reduced graphene oxide. The viscosity of prepared lubricant increases by 35% and 21% for graphite and reduced graphene oxide, respectively. The results of tribological studies with 0.25 wt.% graphite and 0.5 wt.% reduced graphene oxide lubricants showed improvement in coefficient of friction by 32% and 36%, respectively. At these optimal concentrations, the specific wear rate dropped by 51% for reduced graphene oxide. Scanning electron microscopy/energy dispersive spectroscopy, images show that the nanolubricant's mending effect over the worn surface improves reduced graphene oxide added SAE20W40 oil tribological characteristics. From the results, reduced graphene oxide synthesized from as-grated graphite rods proves to be a low-cost, sustainable, and effective friction modifier for engine oils.

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Preparation and research of high-performance LaFeO3/RGO supercapacitor

Luo

Wang

et al. 2022

J Solid State Electrochem

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Sulfonated rGO from waste dry cell graphite rod and its hybrid with PANI as electrode for supercapacitor

Cited by 7 publications

References 42 publications

Polyanilines from spent battery powder and activated carbon: Electrodes for asymmetric supercapacitor cell

Polyanilines from spent battery powder and activated carbon: Electrodes for asymmetric supercapacitor cell

Synthesis of chemically exfoliated reduced graphene oxide from as-grated graphite rods recovered from used household batteries for utilization in tribological applications

Preparation and research of high-performance LaFeO3/RGO supercapacitor

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