High-voltage metal-free disproportionation flow batteries based on 9,10-diphenylanthracene
Several metal-free, nonaqueous, disproportionation redox-flow-battery chemistries based on electrochemically active organic molecules are presented. The electrochemistry of 9,10-diphenylanthracene (DPA), a polycyclic aromatic compound, involves two reversible redox couples separated by more than 3 V...
| Main Authors: | , , |
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| Format: | Journal article |
| Language: | English |
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IOP Science
2020
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| _version_ | 1797087248713252864 |
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| author | Saraidaridis, J Suttil, J Monroe, C |
| author_facet | Saraidaridis, J Suttil, J Monroe, C |
| author_sort | Saraidaridis, J |
| collection | OXFORD |
| description | Several metal-free, nonaqueous, disproportionation redox-flow-battery chemistries based on electrochemically active organic molecules are presented. The electrochemistry of 9,10-diphenylanthracene (DPA), a polycyclic aromatic compound, involves two reversible redox couples separated by more than 3 V, which are associated with electrochemical disproportionation of the neutral molecule. Nonaqueous solvents are investigated with the dual aims of realizing this high voltage in a battery cell and maximizing active-species solubility. Functionalized DPA analogues are synthesized and shown to exhibit electrochemical responses similar to pristine DPA; appending diethyleneglycoxy esters on each phenyl group to form DdPA (9,10-Bis(4-(2-(2-methoxyethoxy)ethoxy)carbonyl-phenyl)anthracene) improves solubility over DPA by a factor of 20 in acetonitrile and 5 in dimethoxyethane. The 0.21 M maximum concentration of DdPA in dimethoxyethane suggests an energy density of 8 Wh l−1, which begins to approach the energy density of state-of-the-art aqueous RFBs. Charge/discharge of a stagnant one-dimensional cell delivers the highest cell voltages from an organic single-active-species RFB chemistry yet reported. Energy and power efficiencies for DPA in dimethoxyethane and DdPA in acetonitrile are similar to nonaqueous vanadium acetylacetonate in cells of similar construction. |
| first_indexed | 2024-03-07T02:33:07Z |
| format | Journal article |
| id | oxford-uuid:a7e833d7-254a-4124-9a4b-500e2276c193 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T02:33:07Z |
| publishDate | 2020 |
| publisher | IOP Science |
| record_format | dspace |
| spelling | oxford-uuid:a7e833d7-254a-4124-9a4b-500e2276c1932022-03-27T02:57:39ZHigh-voltage metal-free disproportionation flow batteries based on 9,10-diphenylanthraceneJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:a7e833d7-254a-4124-9a4b-500e2276c193EnglishSymplectic ElementsIOP Science2020Saraidaridis, JSuttil, JMonroe, CSeveral metal-free, nonaqueous, disproportionation redox-flow-battery chemistries based on electrochemically active organic molecules are presented. The electrochemistry of 9,10-diphenylanthracene (DPA), a polycyclic aromatic compound, involves two reversible redox couples separated by more than 3 V, which are associated with electrochemical disproportionation of the neutral molecule. Nonaqueous solvents are investigated with the dual aims of realizing this high voltage in a battery cell and maximizing active-species solubility. Functionalized DPA analogues are synthesized and shown to exhibit electrochemical responses similar to pristine DPA; appending diethyleneglycoxy esters on each phenyl group to form DdPA (9,10-Bis(4-(2-(2-methoxyethoxy)ethoxy)carbonyl-phenyl)anthracene) improves solubility over DPA by a factor of 20 in acetonitrile and 5 in dimethoxyethane. The 0.21 M maximum concentration of DdPA in dimethoxyethane suggests an energy density of 8 Wh l−1, which begins to approach the energy density of state-of-the-art aqueous RFBs. Charge/discharge of a stagnant one-dimensional cell delivers the highest cell voltages from an organic single-active-species RFB chemistry yet reported. Energy and power efficiencies for DPA in dimethoxyethane and DdPA in acetonitrile are similar to nonaqueous vanadium acetylacetonate in cells of similar construction. |
| spellingShingle | Saraidaridis, J Suttil, J Monroe, C High-voltage metal-free disproportionation flow batteries based on 9,10-diphenylanthracene |
| title | High-voltage metal-free disproportionation flow batteries based on 9,10-diphenylanthracene |
| title_full | High-voltage metal-free disproportionation flow batteries based on 9,10-diphenylanthracene |
| title_fullStr | High-voltage metal-free disproportionation flow batteries based on 9,10-diphenylanthracene |
| title_full_unstemmed | High-voltage metal-free disproportionation flow batteries based on 9,10-diphenylanthracene |
| title_short | High-voltage metal-free disproportionation flow batteries based on 9,10-diphenylanthracene |
| title_sort | high voltage metal free disproportionation flow batteries based on 9 10 diphenylanthracene |
| work_keys_str_mv | AT saraidaridisj highvoltagemetalfreedisproportionationflowbatteriesbasedon910diphenylanthracene AT suttilj highvoltagemetalfreedisproportionationflowbatteriesbasedon910diphenylanthracene AT monroec highvoltagemetalfreedisproportionationflowbatteriesbasedon910diphenylanthracene |