Proton-Coupled Electron Transfer Aided Thermoelectric Energy Conversion and Storage.
Angew Chem Int Ed Engl
; 62(35): e202307947, 2023 Aug 28.
Article
em En
| MEDLINE
| ID: mdl-37421169
ABSTRACT
Low-grade heat is ubiquitous in the environment and its thermoelectric conversion by the ionic conductors remains a challenge because of the low efficiency and poor sustainability. Here we demonstrate that the thermoelectric performances can be boosted by combining the Soret effect of protons and proton-coupled electron transfer (PCET) reaction of benzoquinone and hydroquinone in hydrogels. An overall enhancement of thermopower (25.9â
mV K-1 ), power factor (5â
mW m-1 K-2 ), figure of merit (>2.4) and continuity of power output is achieved. Moreover, an energy-storage function can be achieved by the redox couple, and a retained power output of 27.7 %, or 14â
mW m-2 for more than 3â
hours is obtained by the re-balance of PCET reactants in the hydrogel after the removal of the temperature gradient.
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1
Base de dados:
MEDLINE
Idioma:
En
Revista:
Angew Chem Int Ed Engl
Ano de publicação:
2023
Tipo de documento:
Article
País de afiliação:
China