Hydrogen is the ecologically ideal energy vector. Efficient photo-electrochemical production of hydrogen from water could be the optimal solution to the energy storage problems related to renewable sources. However, in the water splitting reaction the electric potential required to initiate the process significantly exceeds the thermodynamic limit. By controlling the spins of the electrons that are transferred from the solution to the anode, and ensuring that they are coaligned, the threshold voltage for the process can in theory be decreased to that of the thermodynamic voltage. In the present study, by using TiO2 anodes coated with chiral materials, we explore what are the effects of having a spin-polarized current on water electrolysis. The spin-polarization arises from exploiting what is known as Chiral Induced Spin Selectivity effect by using chiral molecules as spin filters. When using chiral molecules instead of a non-chiral analogue, the hydrogen production from water is enhanced, the threshold voltage is reduced and the by-product formation of hydrogen peroxide is suppressed.

Spin-controlled electrochemistry using chiral electrodes: Effects on water electrolysis / Tassinari, F; Mtangi, W; Banerjee-Ghosh, K; Adelizzi, B; Parenti, F; Vankayala, K; Palmans, A; Jentzsch, Av; Fontanesi, C; Mucci, A; Meijer, E; Naaman, R. - 255:(2018). (Intervento presentato al convegno 255th National Meeting and Exposition of the American-Chemical-Society (ACS) - Nexus of Food, Energy, and Water, tenutosi a New Orleans (USA) nel 18-22 marzo 2018).

Spin-controlled electrochemistry using chiral electrodes: Effects on water electrolysis

Tassinari, F;Parenti, F;Fontanesi, C;Mucci, A;
2018

Abstract

Hydrogen is the ecologically ideal energy vector. Efficient photo-electrochemical production of hydrogen from water could be the optimal solution to the energy storage problems related to renewable sources. However, in the water splitting reaction the electric potential required to initiate the process significantly exceeds the thermodynamic limit. By controlling the spins of the electrons that are transferred from the solution to the anode, and ensuring that they are coaligned, the threshold voltage for the process can in theory be decreased to that of the thermodynamic voltage. In the present study, by using TiO2 anodes coated with chiral materials, we explore what are the effects of having a spin-polarized current on water electrolysis. The spin-polarization arises from exploiting what is known as Chiral Induced Spin Selectivity effect by using chiral molecules as spin filters. When using chiral molecules instead of a non-chiral analogue, the hydrogen production from water is enhanced, the threshold voltage is reduced and the by-product formation of hydrogen peroxide is suppressed.
2018
255th National Meeting and Exposition of the American-Chemical-Society (ACS) - Nexus of Food, Energy, and Water,
New Orleans (USA)
18-22 marzo 2018
Tassinari, F; Mtangi, W; Banerjee-Ghosh, K; Adelizzi, B; Parenti, F; Vankayala, K; Palmans, A; Jentzsch, Av; Fontanesi, C; Mucci, A; Meijer, E; Naaman...espandi
Spin-controlled electrochemistry using chiral electrodes: Effects on water electrolysis / Tassinari, F; Mtangi, W; Banerjee-Ghosh, K; Adelizzi, B; Parenti, F; Vankayala, K; Palmans, A; Jentzsch, Av; Fontanesi, C; Mucci, A; Meijer, E; Naaman, R. - 255:(2018). (Intervento presentato al convegno 255th National Meeting and Exposition of the American-Chemical-Society (ACS) - Nexus of Food, Energy, and Water, tenutosi a New Orleans (USA) nel 18-22 marzo 2018).
File in questo prodotto:
File Dimensione Formato  
POSTER NOLA.pdf

Accesso riservato

Descrizione: poster
Tipologia: Altro
Dimensione 1.55 MB
Formato Adobe PDF
1.55 MB Adobe PDF   Visualizza/Apri   Richiedi una copia
Pubblicazioni consigliate

Licenza Creative Commons
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1164678
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? 0
social impact