Details

Autor(en) / Beteiligte

• Verma, Kapil Dev
• Sinha, Prerna
• Ghorai, Manas K.
• Kar, Kamal K.

Titel

Mesoporous electrode from human hair and bio-based gel polymer electrolyte for high-performance supercapacitor

Ist Teil von

• Diamond and related materials, 2022-03, Vol.123, p.108879, Article 108879

Ort / Verlag

Amsterdam: Elsevier B.V

Erscheinungsjahr

2022

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• This work reports a facile and scalable method for assembling a supercapacitor. Cost-effective solid-state supercapacitor contrived by combining waste biomass human hair derived activated carbon (HHCK) as an electrode and albumen (egg white gel polymer) in 1 M NaCl electrolyte (1 M NaCl-EWG). Human hair as an electrode precursor and egg white as a gel polymer precursor provide a sustainable approach for biomass-based material's cost-effective and eco-friendly utilization. Human hair derived interconnected three-dimensional hierarchal porous carbon of human hair possessed a high specific surface area of 1466 m2 g−1 along with the incorporation of ~23% heteroatoms into the carbon matrix. The solid-state supercapacitor (HE-SC) exhibits high specific capacitance of 491 F g−1 at 1 A g−1 within a wide electrochemical stable potential window of 1.5 V. HE-SC provided a high energy density of 38.4 W h kg−1 at 0.374 kW kg−1 power density, quick charge-discharge ability (time constant was 4.3 s), and high cyclic stability (86% capacitance retention with 95% coulombic efficiency after 6500 cycles). This current research provides a feasible and effective strategy for preparing low-cost and high-performance supercapacitors utilizing waste biomass. [Display omitted] •Heteroatoms decorated mesoporous activated carbon material derived from human hair.•Egg white gel polymer electrolyte for leakage proof high potential supercapacitor.•HE-SC supercapacitor shows a very high specific capacitance of 491 F g−1.•HE-SC exhibits high energy density of 38.4 W h kg−1 at 374 W kg−1 power density.