Temperature-Induced Precipitation of V<sub>2</sub>O<sub>5</sub> in Vanadium Flow Batteries—Revisited
The maximum operation temperature of the vanadium solution in vanadium flow batteries is typically limited to 40 °C to prevent the damaging thermal precipitation of V<sub>2</sub>O<sub>5</sub>. Therefore, the operation of batteries at high ambient temperatures is an important...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-12-01
|
| Series: | Batteries |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2313-0105/7/4/87 |
| _version_ | 1797506600501510144 |
|---|---|
| author | Emil Holm Kirk Filippo Fenini Sara Noriega Oreiro Anders Bentien |
| author_facet | Emil Holm Kirk Filippo Fenini Sara Noriega Oreiro Anders Bentien |
| author_sort | Emil Holm Kirk |
| collection | DOAJ |
| description | The maximum operation temperature of the vanadium solution in vanadium flow batteries is typically limited to 40 °C to prevent the damaging thermal precipitation of V<sub>2</sub>O<sub>5</sub>. Therefore, the operation of batteries at high ambient temperatures is an important aspect to tackle for stationary storage. In the present work, a comprehensive study of the high temperature stability of redox solutions for vanadium flow batteries was performed. In particular, focus was placed on a comparison between batch and in operando precipitation experiments. It was found that, despite being a widely used method in the literature, caution should be taken when assessing the precipitation through capacity fade due to the large influence of external oxidation and cycling parameters, plausibly leading to an incorrect interpretation of the results. The in operando experiments consistently show a precipitation temperature almost 10–20 °C higher than in the batch tests at a 100% state of charge for the same time lapse. |
| first_indexed | 2024-03-10T04:34:52Z |
| format | Article |
| id | doaj.art-8ce1690f9e254bae9994881a363f8999 |
| institution | Directory Open Access Journal |
| issn | 2313-0105 |
| language | English |
| last_indexed | 2024-03-10T04:34:52Z |
| publishDate | 2021-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Batteries |
| spelling | doaj.art-8ce1690f9e254bae9994881a363f89992023-11-23T03:50:51ZengMDPI AGBatteries2313-01052021-12-01748710.3390/batteries7040087Temperature-Induced Precipitation of V<sub>2</sub>O<sub>5</sub> in Vanadium Flow Batteries—RevisitedEmil Holm Kirk0Filippo Fenini1Sara Noriega Oreiro2Anders Bentien3Department of Engineering, Aarhus University, N Åbogade 40, 8200 Aarhus, DenmarkDepartment of Engineering, Aarhus University, N Åbogade 40, 8200 Aarhus, DenmarkDepartment of Engineering, Aarhus University, N Åbogade 40, 8200 Aarhus, DenmarkDepartment of Engineering, Aarhus University, N Åbogade 40, 8200 Aarhus, DenmarkThe maximum operation temperature of the vanadium solution in vanadium flow batteries is typically limited to 40 °C to prevent the damaging thermal precipitation of V<sub>2</sub>O<sub>5</sub>. Therefore, the operation of batteries at high ambient temperatures is an important aspect to tackle for stationary storage. In the present work, a comprehensive study of the high temperature stability of redox solutions for vanadium flow batteries was performed. In particular, focus was placed on a comparison between batch and in operando precipitation experiments. It was found that, despite being a widely used method in the literature, caution should be taken when assessing the precipitation through capacity fade due to the large influence of external oxidation and cycling parameters, plausibly leading to an incorrect interpretation of the results. The in operando experiments consistently show a precipitation temperature almost 10–20 °C higher than in the batch tests at a 100% state of charge for the same time lapse.https://www.mdpi.com/2313-0105/7/4/87vanadium flow batteriestemperature stabilityV<sub>2</sub>O<sub>5</sub> precipitation external oxidationbatch studiesin operando studies |
| spellingShingle | Emil Holm Kirk Filippo Fenini Sara Noriega Oreiro Anders Bentien Temperature-Induced Precipitation of V<sub>2</sub>O<sub>5</sub> in Vanadium Flow Batteries—Revisited Batteries vanadium flow batteries temperature stability V<sub>2</sub>O<sub>5</sub> precipitation external oxidation batch studies in operando studies |
| title | Temperature-Induced Precipitation of V<sub>2</sub>O<sub>5</sub> in Vanadium Flow Batteries—Revisited |
| title_full | Temperature-Induced Precipitation of V<sub>2</sub>O<sub>5</sub> in Vanadium Flow Batteries—Revisited |
| title_fullStr | Temperature-Induced Precipitation of V<sub>2</sub>O<sub>5</sub> in Vanadium Flow Batteries—Revisited |
| title_full_unstemmed | Temperature-Induced Precipitation of V<sub>2</sub>O<sub>5</sub> in Vanadium Flow Batteries—Revisited |
| title_short | Temperature-Induced Precipitation of V<sub>2</sub>O<sub>5</sub> in Vanadium Flow Batteries—Revisited |
| title_sort | temperature induced precipitation of v sub 2 sub o sub 5 sub in vanadium flow batteries revisited |
| topic | vanadium flow batteries temperature stability V<sub>2</sub>O<sub>5</sub> precipitation external oxidation batch studies in operando studies |
| url | https://www.mdpi.com/2313-0105/7/4/87 |
| work_keys_str_mv | AT emilholmkirk temperatureinducedprecipitationofvsub2subosub5subinvanadiumflowbatteriesrevisited AT filippofenini temperatureinducedprecipitationofvsub2subosub5subinvanadiumflowbatteriesrevisited AT saranoriegaoreiro temperatureinducedprecipitationofvsub2subosub5subinvanadiumflowbatteriesrevisited AT andersbentien temperatureinducedprecipitationofvsub2subosub5subinvanadiumflowbatteriesrevisited |