Value added porous carbon from leather wastes as potential supercapacitor electrode using neutral electrolyte

Processing-properties-performance triad relationship in a Washingtonia robusta mesoporous carbon materials-based supercapacitor device

“…BET surface area of the activated HHPB samples and total pore volume increased from 532.50 to 1830.61 m 2 g −1 and 0.46 to 0.91 cm 3 g −1 , respectively, after introduction of activating agent due to generation of large amount of pores in the course of the activation process. The BET surface area, however, decreased to 1509.79 m 2 g −1 as activating agent ratio increased to 3, probably due to pore blocking effects as previously reported by Kennedy et al 25 In addition, the deterioration of porous structure resulting from destruction of walls between adjacent pores by the etching effect of KOH might also have contributed to the reduction in BET surface area. Previous reports suggest that the overall porosity of a chemically activated carbon materials increase with KOH concentration.…”

Sustainable lithium-ion batteries based on metal-free tannery waste biochar

“…These kinds of results can also be found in different materials, such as in carbon samples obtained from the pyrolysis of leather processing waste. 51 As depicted in Fig. 2, the N 2 adsorption-desorption isotherms of the activated carbons show a composite nature, exhibiting the combination of type I and type IV isotherms with an apparent hysteresis loop of type H4, suggesting the co-existence of a micro and mesoporous structure.…”

Recent Advances in Functionalized Nanoporous Carbons Derived from Waste Resources and Their Applications in Energy and Environment

“…There are several factors including tunable porosity, surface functionality and conductivity that are critical for achieving the best performance in NCM electrode materials for supercapacitor applications. This was realized by Vijaya and co‐workers [ 195 ] who demonstrated the preparation of NCM through simple carbonization of solid waste obtained from leather industries and used it as an electrode material. The electrochemical measurements carried out using an aqueous electrolyte (Na 2 SO 4 ) on this NCM resulted in a high specific capacitance (2203 F g −1 /A g −1 ), specific power (≈750 W kg −1 ) and specific energy (≈625 Wh kg −1 ).…”