| Full text | |
| Author(s): |
Clarindo, Jose Eduardo dos Santos
;
Colombo, Rafael Neri Prystaj
;
Sedenho, Graziela Cristina
;
Faria, Luana Cristina Italiano
;
Bertaglia, Thiago
;
Lima, Filipe Camargo Dalmatti Alves
;
Gomes, Roberto da Silva
;
Aziz, Michael J.
;
Crespilho, Frank Nelson
Total Authors: 9
|
| Document type: | Journal article |
| Source: | ACS SUSTAINABLE CHEMISTRY & ENGINEERING; v. 12, n. 31, p. 10-pg., 2024-07-23. |
| Abstract | |
Symmetric all-quinone aqueous redox flow batteries (SQA-RFBs), in which the same quinone derivative is used as the electroactive compound in the negative and positive electrolytes, thereby obviating the need for a species-selective membrane, have been pursued as a potentially cost-effective and sustainable technology for stationary-electrical energy storage. Molecular decomposition during redox activity has frustrated all symmetric organic aqueous RFB development attempts. We used in situ/operando spectroelectrochemistry and density functional theory calculations to demonstrate that during the redox reaction of alizarin red S (ARS), a promising quinone for SQA-RFBs, intramolecular electronic oscillations form positively charged intermediates. Electrodes functionalized with net negative charge stabilize these intermediates via a hybrid adsorptive-diffusive electrochemical reaction mechanism, thereby enabling the cycling of the SQA-RFB. To understand the mechanism, spectroelectrochemical studies were performed on a series of electrodes with and without this functionalization. We report the performance of the first membraneless SQA-RFB prototype, containing ARS in the electrolyte storage reservoirs and instrumented with a reference electrode to evaluate the evolution of the half-cell potentials. (AU) | |
| FAPESP's process: | 22/09164-5 - Understanding the charge transfer mechanisms in biological and biomimetic systems using in-situ and operando techniques: from fundamental science to energy application |
| Grantee: | Frank Nelson Crespilho |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 19/21089-6 - Carbon surfaces for organic battery application: structural properties of the hydrogel/electrolyte/electrode interface |
| Grantee: | Luana Cristina Italiano Faria |
| Support Opportunities: | Scholarships in Brazil - Doctorate (Direct) |
| FAPESP's process: | 21/05665-7 - Development of Van der Waals surfaces for application in biodevices |
| Grantee: | Rafael Neri Prystaj Colombo |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 19/15333-1 - Bio-photo-electrochemical hybrid cells for solar energy conversion |
| Grantee: | Frank Nelson Crespilho |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 17/15714-0 - Redox flow battery coupled with microbial biofuel cell |
| Grantee: | Graziela Cristina Sedenho |
| Support Opportunities: | Scholarships abroad - Research Internship - Doctorate |
| FAPESP's process: | 20/04796-8 - In situ and operando studies of metaloenzymes for energy conversion and fuel bioelectrosynthesis |
| Grantee: | Graziela Cristina Sedenho |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 15/22973-6 - Development of Microbial Fuel Biocells for Bioproduction and Oxidation of Ethanol |
| Grantee: | Graziela Cristina Sedenho |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 21/14537-2 - Low-cost and high-performance carbon electrodes for application in redox flow battery |
| Grantee: | Luana Cristina Italiano Faria |
| Support Opportunities: | Scholarships abroad - Research Internship - Doctorate (Direct) |
| FAPESP's process: | 20/03681-2 - Organic microbatteries: using bioinspired hydrogels and redox molecules |
| Grantee: | Thiago Bertaglia |
| Support Opportunities: | Scholarships in Brazil - Doctorate (Direct) |
| FAPESP's process: | 18/22214-6 - Towards a convergence of technologies: from sensing and biosensing to information visualization and machine learning for data analysis in clinical diagnosis |
| Grantee: | Osvaldo Novais de Oliveira Junior |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 19/12053-8 - High performance electrodes applied in organic batteries and in biofuel cell |
| Grantee: | Frank Nelson Crespilho |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 23/17506-6 - Computational study of the electron transfer mechanism in nanostructured hybrid systems |
| Grantee: | Filipe Camargo Dalmatti Alves Lima |
| Support Opportunities: | Regular Research Grants |