A novel, monolithic harvesting–storage (HS) device composed of a dye-sensitized solar cell (DSSC)-based module and a high voltage supercapacitor with impressive discharge capacity after photocharging is herein proposed. Both the harvesting and the storage sections are fabricated onto conductive glass substrates, paving the way to a smart and easy integration in window facades for energy self-sustainable buildings. In addition, the HS device can also be integrated in portable electronics or drive remote, off-grid sensor networks requiring high power intermittent electrical energy. The harvesting photovoltaic section is constituted by a series of four DSSCs integrated in a single W-type module while the storage section consists of an activated carbon-based supercapacitor (SC) utilizing Pyr14TFSI ionic liquid as the electrolyte. The testing of the two separated sections as well as of the integrated system is reported here. In particular, the integration is evaluated through photo-charge and subsequent discharge protocols performed at different galvanostatic currents, showing that the SC handles photo-charges up to 2.45 V while delivering discharge capacities exceeding 1.8 mA h (0.1 mA h cm−2) upon 1 mA discharge current. To the best of our knowledge this is a never reported before, absolute record value, for stable and reliable integrated HS devices.

High energy and high voltage integrated photo-electrochemical double layer capacitor / Scalia, A.; Varzi, A.; Lamberti, A; Tresso, E; Jeong, S. S.; Jacob, T.; Passerini, S.. - In: SUSTAINABLE ENERGY & FUELS. - ISSN 2398-4902. - ELETTRONICO. - 2:(2018), pp. 968-977. [10.1039/C8SE00003D]

High energy and high voltage integrated photo-electrochemical double layer capacitor

Scalia, A.;Lamberti, A;Tresso, E;
2018

Abstract

A novel, monolithic harvesting–storage (HS) device composed of a dye-sensitized solar cell (DSSC)-based module and a high voltage supercapacitor with impressive discharge capacity after photocharging is herein proposed. Both the harvesting and the storage sections are fabricated onto conductive glass substrates, paving the way to a smart and easy integration in window facades for energy self-sustainable buildings. In addition, the HS device can also be integrated in portable electronics or drive remote, off-grid sensor networks requiring high power intermittent electrical energy. The harvesting photovoltaic section is constituted by a series of four DSSCs integrated in a single W-type module while the storage section consists of an activated carbon-based supercapacitor (SC) utilizing Pyr14TFSI ionic liquid as the electrolyte. The testing of the two separated sections as well as of the integrated system is reported here. In particular, the integration is evaluated through photo-charge and subsequent discharge protocols performed at different galvanostatic currents, showing that the SC handles photo-charges up to 2.45 V while delivering discharge capacities exceeding 1.8 mA h (0.1 mA h cm−2) upon 1 mA discharge current. To the best of our knowledge this is a never reported before, absolute record value, for stable and reliable integrated HS devices.
File in questo prodotto:
File Dimensione Formato  
High energy and high voltage integrated photoelectrochemical.pdf

non disponibili

Tipologia: 2a Post-print versione editoriale / Version of Record
Licenza: Non Pubblico - Accesso privato/ristretto
Dimensione 843.35 kB
Formato Adobe PDF
843.35 kB Adobe PDF   Visualizza/Apri   Richiedi una copia
Pubblicazioni consigliate

Caricamento pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11583/2709566
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo