High Energy And Power Density Asymmetric Supercapacitors Using Electrospun Cobalt Oxide Nanowire Anode

Electrochemical materials are under rigorous search for building advanced energy storage devices. Herein, supercapacitive properties of highly crystalline and ultrathin cobalt oxide (Co3O4) nanowires (diameter ∼30–60 nm) synthesized using an aqueous polymeric solution based electrospinning process a...

Full description

Bibliographic Details
Main Authors:	Vidhyadharan, Baiju, Radhiyah, Abd Aziz, Izan Izwan, Misnon, Kumar, Gopinathan M. Anil, Jamil, Ismail, M. M., Yusoff, Rajan, Jose
Format:	Article
Published:	Elsevier Ltd 2014
Subjects:	Q Science (General) QD Chemistry
Online Access:	http://umpir.ump.edu.my/id/eprint/6349/ http://umpir.ump.edu.my/id/eprint/6349/ http://umpir.ump.edu.my/id/eprint/6349/

id	ump-6349
recordtype	eprints
spelling	ump-63492018-01-22T01:03:07Z http://umpir.ump.edu.my/id/eprint/6349/ High Energy And Power Density Asymmetric Supercapacitors Using Electrospun Cobalt Oxide Nanowire Anode Vidhyadharan, Baiju Radhiyah, Abd Aziz Izan Izwan, Misnon Kumar, Gopinathan M. Anil Jamil, Ismail M. M., Yusoff Rajan, Jose Q Science (General) QD Chemistry Electrochemical materials are under rigorous search for building advanced energy storage devices. Herein, supercapacitive properties of highly crystalline and ultrathin cobalt oxide (Co3O4) nanowires (diameter ∼30–60 nm) synthesized using an aqueous polymeric solution based electrospinning process are reported. These nanowire electrodes show a specific capacitance (CS) of ∼1110 F g−1 in 6 M KOH at a current density of 1 A g−1 with coulombic efficiency ∼100%. Asymmetric supercapacitors (ASCs) (CS ∼175 F g−1 at 2 A g−1 galvanostatic cycling) are fabricated using the Co3O4 as anode and commercial activated carbon (AC) as cathode and compared their performance with symmetric electrochemical double layer capacitors (EDLCs) fabricated using AC (CS ∼31 F g−1 at 2 A g−1 galvanostatic cycling). The Co3O4//AC ASCs deliver specific energy densities (ES) of 47.6, 35.4, 20 and 8 Wh kg−1 at specific power densities (PS) 1392, 3500, 7000 and 7400 W kg−1, respectively. The performance of ASCs is much superior to the control EDLCs, which deliver ES of 9.2, 8.9, 8.4 and 6.8 Wh kg−1 at PS 358, 695, 1400 and 3500 W kg−1, respectively. The ASCs show nearly six times higher energy density (∼47.6 Wh kg−1) than EDLC (8.4 Wh kg−1) without compromising its power density (∼1400 W kg−1) at similar galvanostatic cycling conditions (2 A g−1). Elsevier Ltd 2014 Article PeerReviewed Vidhyadharan, Baiju and Radhiyah, Abd Aziz and Izan Izwan, Misnon and Kumar, Gopinathan M. Anil and Jamil, Ismail and M. M., Yusoff and Rajan, Jose (2014) High Energy And Power Density Asymmetric Supercapacitors Using Electrospun Cobalt Oxide Nanowire Anode. Journal of Power Sources, 270. pp. 526-535. ISSN 0378-7753 http://dx.doi.org/10.1016/j.jpowsour.2014.07.134 DOI: 10.1016/j.jpowsour.2014.07.134
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
topic	Q Science (General) QD Chemistry
spellingShingle	Q Science (General) QD Chemistry Vidhyadharan, Baiju Radhiyah, Abd Aziz Izan Izwan, Misnon Kumar, Gopinathan M. Anil Jamil, Ismail M. M., Yusoff Rajan, Jose High Energy And Power Density Asymmetric Supercapacitors Using Electrospun Cobalt Oxide Nanowire Anode
description	Electrochemical materials are under rigorous search for building advanced energy storage devices. Herein, supercapacitive properties of highly crystalline and ultrathin cobalt oxide (Co3O4) nanowires (diameter ∼30–60 nm) synthesized using an aqueous polymeric solution based electrospinning process are reported. These nanowire electrodes show a specific capacitance (CS) of ∼1110 F g−1 in 6 M KOH at a current density of 1 A g−1 with coulombic efficiency ∼100%. Asymmetric supercapacitors (ASCs) (CS ∼175 F g−1 at 2 A g−1 galvanostatic cycling) are fabricated using the Co3O4 as anode and commercial activated carbon (AC) as cathode and compared their performance with symmetric electrochemical double layer capacitors (EDLCs) fabricated using AC (CS ∼31 F g−1 at 2 A g−1 galvanostatic cycling). The Co3O4//AC ASCs deliver specific energy densities (ES) of 47.6, 35.4, 20 and 8 Wh kg−1 at specific power densities (PS) 1392, 3500, 7000 and 7400 W kg−1, respectively. The performance of ASCs is much superior to the control EDLCs, which deliver ES of 9.2, 8.9, 8.4 and 6.8 Wh kg−1 at PS 358, 695, 1400 and 3500 W kg−1, respectively. The ASCs show nearly six times higher energy density (∼47.6 Wh kg−1) than EDLC (8.4 Wh kg−1) without compromising its power density (∼1400 W kg−1) at similar galvanostatic cycling conditions (2 A g−1).
format	Article
author	Vidhyadharan, Baiju Radhiyah, Abd Aziz Izan Izwan, Misnon Kumar, Gopinathan M. Anil Jamil, Ismail M. M., Yusoff Rajan, Jose
author_facet	Vidhyadharan, Baiju Radhiyah, Abd Aziz Izan Izwan, Misnon Kumar, Gopinathan M. Anil Jamil, Ismail M. M., Yusoff Rajan, Jose
author_sort	Vidhyadharan, Baiju
title	High Energy And Power Density Asymmetric Supercapacitors Using Electrospun Cobalt Oxide Nanowire Anode
title_short	High Energy And Power Density Asymmetric Supercapacitors Using Electrospun Cobalt Oxide Nanowire Anode
title_full	High Energy And Power Density Asymmetric Supercapacitors Using Electrospun Cobalt Oxide Nanowire Anode
title_fullStr	High Energy And Power Density Asymmetric Supercapacitors Using Electrospun Cobalt Oxide Nanowire Anode
title_full_unstemmed	High Energy And Power Density Asymmetric Supercapacitors Using Electrospun Cobalt Oxide Nanowire Anode
title_sort	high energy and power density asymmetric supercapacitors using electrospun cobalt oxide nanowire anode
publisher	Elsevier Ltd
publishDate	2014
url	http://umpir.ump.edu.my/id/eprint/6349/ http://umpir.ump.edu.my/id/eprint/6349/ http://umpir.ump.edu.my/id/eprint/6349/
first_indexed	2023-09-18T22:02:02Z
last_indexed	2023-09-18T22:02:02Z
_version_	1777414462534320128

High Energy And Power Density Asymmetric Supercapacitors Using Electrospun Cobalt Oxide Nanowire Anode

Similar Items