التفاصيل البيبلوغرافية
| العنوان: |
Fe3O4 nano assembly embedded in 2D-crumpled porous carbon sheets for high energy density supercapacitor. |
| المؤلفون: |
Venkateswarlu, Sada1,2 (AUTHOR) venkisada67@gmail.com, Mahajan, Hansa1,2 (AUTHOR), Panda, Atanu1,2 (AUTHOR), Lee, Jihyun1,2 (AUTHOR), Govindaraju, Saravanan3 (AUTHOR), Yun, Kyusik3 (AUTHOR), Yoon, Minyoung1 (AUTHOR) myyoon@knu.ac.kr |
| المصدر: |
Chemical Engineering Journal. Sep2021:Part 2, Vol. 420, pN.PAG-N.PAG. 1p. |
| مصطلحات موضوعية: |
*IRON oxides, *ENERGY density, *SUPERCAPACITORS, *GARLIC, *SUPERCAPACITOR electrodes, *FERRIC oxide, *NANOSTRUCTURED materials, *CARBONIZATION |
| مستخلص: |
[Display omitted] • The waste garlic husk can act as a carbon (2D-CCS) precursor as well as a solvent. • A novel 0D-Fe 3 O 4 nano assembly and 2D-CCS composite was synthesized with zero-waste generation. • The composite shows outstanding power and energy densities (8000 W kg−1, 115.5 Wh Kg−1) of a supercapacitor. • The 2D crumpled nano-sheet assembly affords high specific capacitance in a supercapacitor application. • This work stimulates a new and universal door converting waste materials to valuable materials. Due to the copious development of industries and depletion of fossil fuels generate deteriorating environmental pollution and appalling economic crisis. Thus, there are increasing unmet for developing well-defined nanostructures to mitigate energy and environmental issues. Herein, we firstly report a unique concerted method to convert agro bio-waste into an economical wealth material. By the inspiration of nature, we selected a waste 2D garlic husk (Allium sativum) as a torchbearer to make a unique material. The garlic extract was applied for the synthesis of Fe 3 O 4 NAs@2D-CCS composite nano-assemblies (NAs). Interestingly, the small-sized Fe 3 O 4 nanocrystals (<20 nm) underwent nucleation in the presence of biogenic 2D-CCS and formed a pomegranate like a cluster (200 nm) forming a conglomerate on porous carbon layers. Most importantly, no secondary waste was generated in this work. This Fe 3 O 4 NAs@2D-CCS composite affords high specific capacitance of 820F g−1 at a current density of 0.5 A g−1, which is nearly 5 to 3 times higher than pristine Fe 3 O 4 NPs (<20 nm) electrode with an outstanding power density (3500–8000 W kg−1) and specific energy density (115.5 to 65.9 Wh Kg−1), which is superior among most of all reported iron oxide and graphitic carbon composites. This simple work stimulates a new door for the generation of waste to well-defined nanostructure materials for energy, catalysis, and environmental applications. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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