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...
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Elsevier Ltd
2014
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| 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 |
| collection | UMP |
| 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). |
| first_indexed | 2024-03-06T11:46:25Z |
| format | Article |
| id | UMPir6349 |
| institution | Universiti Malaysia Pahang |
| last_indexed | 2024-03-06T11:46:25Z |
| publishDate | 2014 |
| publisher | Elsevier Ltd |
| record_format | dspace |
| spelling | UMPir63492018-01-22T01:03:07Z 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. (Published) http://dx.doi.org/10.1016/j.jpowsour.2014.07.134 DOI: 10.1016/j.jpowsour.2014.07.134 |
| 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 |
| title | 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_short | 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 |
| topic | Q Science (General) QD Chemistry |
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