Study of the Kinetics of Vanadium (II)/(III) Redox Reaction
Vanadium redox flow battery (VRB) is a novel electrical energystorage system. The cell voltage loss is mainly due to the sluggishreaction of these redox reactions, it also affects the overall VRBenergy storage efficiency. Rotating disk electrode (RDE) was usedto measure the polarization curves of V(...
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| Veröffentlicht in: | ECS transactions 2013-04, Vol.50 (45), p.87-92 |
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| creator | Yang, Hun-Yun Hsueh, Kan-Lin Hsieh, Chin-Lung Hung, Ju-Shei |
| description | Vanadium redox flow battery (VRB) is a novel electrical energystorage system. The cell voltage loss is mainly due to the sluggishreaction of these redox reactions, it also affects the overall VRBenergy storage efficiency. Rotating disk electrode (RDE) was usedto measure the polarization curves of V(IV)/(V) and V(II)/V(III)redox reactions in different electrolyte compositions. On Carbonelectrode, the rate constants of V(IV) oxidation is much slowerthan the rate constant of V(II) oxidation. The mainly voltage lossis due to the V(IV)/(V) in the electrolytes on positive electrode.We also found that the Stoke radius of V(IV)/V(V) ion is largerthan the Stoke radius of V(II)/V(III). This provides a reasoning oflower reaction constant of V(IV)/V(V) ion pair. |
| doi_str_mv | 10.1149/05045.0087ecst |
| format | Article |
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The cell voltage loss is mainly due to the sluggishreaction of these redox reactions, it also affects the overall VRBenergy storage efficiency. Rotating disk electrode (RDE) was usedto measure the polarization curves of V(IV)/(V) and V(II)/V(III)redox reactions in different electrolyte compositions. On Carbonelectrode, the rate constants of V(IV) oxidation is much slowerthan the rate constant of V(II) oxidation. The mainly voltage lossis due to the V(IV)/(V) in the electrolytes on positive electrode.We also found that the Stoke radius of V(IV)/V(V) ion is largerthan the Stoke radius of V(II)/V(III). This provides a reasoning oflower reaction constant of V(IV)/V(V) ion pair.</description><identifier>ISSN: 1938-5862</identifier><identifier>EISSN: 1938-6737</identifier><identifier>DOI: 10.1149/05045.0087ecst</identifier><language>eng</language><publisher>The Electrochemical Society, Inc</publisher><ispartof>ECS transactions, 2013-04, Vol.50 (45), p.87-92</ispartof><rights>2013 ECS - The Electrochemical Society</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c314t-25f71e87111ed584a80fd46861bbae140b90949338c76f1380526fd687c9e8a13</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://iopscience.iop.org/article/10.1149/05045.0087ecst/pdf$$EPDF$$P50$$Giop$$H</linktopdf><link.rule.ids>314,780,784,27924,27925,53846,53893</link.rule.ids></links><search><creatorcontrib>Yang, Hun-Yun</creatorcontrib><creatorcontrib>Hsueh, Kan-Lin</creatorcontrib><creatorcontrib>Hsieh, Chin-Lung</creatorcontrib><creatorcontrib>Hung, Ju-Shei</creatorcontrib><title>Study of the Kinetics of Vanadium (II)/(III) Redox Reaction</title><title>ECS transactions</title><addtitle>ECS Trans</addtitle><description>Vanadium redox flow battery (VRB) is a novel electrical energystorage system. The cell voltage loss is mainly due to the sluggishreaction of these redox reactions, it also affects the overall VRBenergy storage efficiency. Rotating disk electrode (RDE) was usedto measure the polarization curves of V(IV)/(V) and V(II)/V(III)redox reactions in different electrolyte compositions. On Carbonelectrode, the rate constants of V(IV) oxidation is much slowerthan the rate constant of V(II) oxidation. The mainly voltage lossis due to the V(IV)/(V) in the electrolytes on positive electrode.We also found that the Stoke radius of V(IV)/V(V) ion is largerthan the Stoke radius of V(II)/V(III). 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| title | Study of the Kinetics of Vanadium (II)/(III) Redox Reaction |
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