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Chemically Synthesized Iron-Oxide-Based Pure Negative Electrode for Solid-State Asymmetric Supercapacitor Devices

Title
Chemically Synthesized Iron-Oxide-Based Pure Negative Electrode for Solid-State Asymmetric Supercapacitor Devices
Author(s)
Yadav, A. A.Hunge, Yuvaraj M.Ko, SeongjunKang, Seok-Won
Issued Date
2022-09
Citation
Materials, v.15, no.17
Type
Article
Author Keywords
chemical bath depositionalpha-Fe2O3Co3O4supercapacitor device
Keywords
ALPHA-FE2O3 THIN-FILMSHIGH-PERFORMANCENANOSHEET ARRAYSHEMATITEENERGY DENSITYFE2O3DEGRADATIONNANOWIRESNETWORKSGROWTH
ISSN
1996-1944
Abstract
Among energy storage devices, supercapacitors have received considerable attention in recent years owing to their high-power density and extended cycle life. Researchers are currently making efforts to improve energy density using different asymmetric cell configurations, which may provide a wider potential window. Many studies have been conducted on positive electrodes for asymmetric supercapacitor devices; however, studies on negative electrodes have been limited. In this study, iron oxides with different morphologies were synthesized at various deposition temperatures using a simple chemical bath deposition method. A nanosphere-like morphology was obtained for alpha-Fe2O3. The obtained specific capacitance (C,) of alpha-Fe2O3 was 2021 F/g at a current density of 4 A/g. The negative electrode showed an excellent capacitance retention of 96% over 5000 CV cycles. The fabricated asymmetric solid-state supercapacitor device based on alpha-Fe2O3-NF//Co3O4-NF exhibited a C-s of 155 F/g and an energy density of 21 Wh/kg at 4 A/g.
URI
http://hdl.handle.net/20.500.11750/17027
DOI
10.3390/ma15176133
Publisher
MDPI
Files in This Item:
000851990500001.pdf

000851990500001.pdf

기타 데이터 / 7.21 MB / Adobe PDF download
Appears in Collections:
ETC 1. Journal Articles

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