Chemovoltaic effect for renewable liquid and vapor fuels on semiconductor surfaces

Mahdi Alizadeh*, Ivan Radevici, Shengyang Li, Jani Oksanen

*Tämän työn vastaava kirjoittaja

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

15 Lataukset (Pure)

Abstrakti

The chemovoltaic effect – generation of electronic excitation by exergonic redox reactions – has been observed on metallic surfaces of Schottky junctions and is proving to be pivotal in explaining in detail the momentum conservation relations of chemically active collisions. As shown in this work, it can hold keys for direct chemical energy harvesting by semiconductor solar cells. To study the possibilities of chemovoltaic energy conversion by semiconductors, we have modeled and designed an ‘electrolyte-free fuel cell’ formed by a GaAs diode that can host electrochemical fuel oxidation and oxidant reduction reactions on its conduction and valence bands and as a result convert renewable chemical energy (as well as light) into electricity. The experimental results show that exposing the surface of a suitably designed solar cell to methanol liquid or vapor in the presence of oxygen or hydrogen peroxide leads to the generation of electrical power.

AlkuperäiskieliEnglanti
Artikkelie202301522
Sivut1-9
Sivumäärä9
JulkaisuChemSusChem
Vuosikerta17
Numero5
DOI - pysyväislinkit
TilaJulkaistu - 8 maalisk. 2024
OKM-julkaisutyyppiA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

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