File Download
There are no files associated with this item.
Links for fulltext
(May Require Subscription)
- Publisher Website: 10.1016/j.jpowsour.2020.228441
- Scopus: eid_2-s2.0-85086509944
- WOS: WOS:000544260600018
- Find via
Supplementary
- Citations:
- Appears in Collections:
Article: A novel electrode formed with electrospun nano- and micro-scale carbon fibers for aqueous redox flow batteries
Title | A novel electrode formed with electrospun nano- and micro-scale carbon fibers for aqueous redox flow batteries |
---|---|
Authors | |
Keywords | Specific surface area Pore size Permeability Dual-diameter carbon fiber Electrospinning |
Issue Date | 2020 |
Publisher | Elsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jpowsour |
Citation | Journal of Power Sources, 2020, v. 470, p. article no. 228441 How to Cite? |
Abstract | This work reports on a novel electrode prepared with electrospun nano- and micro-scale carbon fibers for aqueous redox flow batteries. Larger fibers, ~10 μm in diameter, form larger pores to provide pathways for electrolyte flow, while smaller fibers, ~1 μm in diameter, increase active surface area for redox reactions. Brunauer-Emmett-Teller and pressure drop tests show that the specific surface area of the prepared dual-diameter electrode is doubled as compared with the large-fiber electrode, while the estimated permeability is enhanced by 1.4 times as opposed to the small-fiber electrode. The application of the dual-diameter electrodes to a vanadium redox flow battery allows the battery to achieve an energy efficiency of 84.78% at the current density of 100 mA cm−2, which is 13.57% higher than that with small-fiber electrodes, and 3.91% higher than that with large-fiber electrodes. Even at a high current density of 200 mA cm−2, the battery with the prepared electrode can still maintain the energy efficiency of 74.18%, which is 5.5% higher than that with large-fiber electrodes, and the battery with small-fiber electrodes cannot be operated at such high current density. This dual-diameter fibrous structure provides inspirations for the future electrode design in aqueous redox flow batteries. |
Persistent Identifier | http://hdl.handle.net/10722/289735 |
ISSN | 2023 Impact Factor: 8.1 2023 SCImago Journal Rankings: 1.857 |
ISI Accession Number ID |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Sun, J | - |
dc.contributor.author | Jiang, HR | - |
dc.contributor.author | Wu, MC | - |
dc.contributor.author | Fan, XZ | - |
dc.contributor.author | Chao, CYH | - |
dc.contributor.author | Zhao, TS | - |
dc.date.accessioned | 2020-10-22T08:16:43Z | - |
dc.date.available | 2020-10-22T08:16:43Z | - |
dc.date.issued | 2020 | - |
dc.identifier.citation | Journal of Power Sources, 2020, v. 470, p. article no. 228441 | - |
dc.identifier.issn | 0378-7753 | - |
dc.identifier.uri | http://hdl.handle.net/10722/289735 | - |
dc.description.abstract | This work reports on a novel electrode prepared with electrospun nano- and micro-scale carbon fibers for aqueous redox flow batteries. Larger fibers, ~10 μm in diameter, form larger pores to provide pathways for electrolyte flow, while smaller fibers, ~1 μm in diameter, increase active surface area for redox reactions. Brunauer-Emmett-Teller and pressure drop tests show that the specific surface area of the prepared dual-diameter electrode is doubled as compared with the large-fiber electrode, while the estimated permeability is enhanced by 1.4 times as opposed to the small-fiber electrode. The application of the dual-diameter electrodes to a vanadium redox flow battery allows the battery to achieve an energy efficiency of 84.78% at the current density of 100 mA cm−2, which is 13.57% higher than that with small-fiber electrodes, and 3.91% higher than that with large-fiber electrodes. Even at a high current density of 200 mA cm−2, the battery with the prepared electrode can still maintain the energy efficiency of 74.18%, which is 5.5% higher than that with large-fiber electrodes, and the battery with small-fiber electrodes cannot be operated at such high current density. This dual-diameter fibrous structure provides inspirations for the future electrode design in aqueous redox flow batteries. | - |
dc.language | eng | - |
dc.publisher | Elsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jpowsour | - |
dc.relation.ispartof | Journal of Power Sources | - |
dc.subject | Specific surface area | - |
dc.subject | Pore size | - |
dc.subject | Permeability | - |
dc.subject | Dual-diameter carbon fiber | - |
dc.subject | Electrospinning | - |
dc.title | A novel electrode formed with electrospun nano- and micro-scale carbon fibers for aqueous redox flow batteries | - |
dc.type | Article | - |
dc.identifier.email | Chao, CYH: cyhchao@hku.hk | - |
dc.identifier.authority | Chao, CYH=rp02396 | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/j.jpowsour.2020.228441 | - |
dc.identifier.scopus | eid_2-s2.0-85086509944 | - |
dc.identifier.hkuros | 316094 | - |
dc.identifier.volume | 470 | - |
dc.identifier.spage | article no. 228441 | - |
dc.identifier.epage | article no. 228441 | - |
dc.identifier.isi | WOS:000544260600018 | - |
dc.publisher.place | Netherlands | - |
dc.identifier.issnl | 0378-7753 | - |