Molecular Photoelectrochemical Energy Storage Materials for Coupled Solar Batteries.
Acc Chem Res
; 57(12): 1736-1746, 2024 Jun 18.
Article
in En
| MEDLINE
| ID: mdl-38836507
ABSTRACT
ConspectusSolar-to-electrochemical energy storage is one of the essential solar energy utilization pathways alongside solar-to-electricity and solar-to-chemical conversion. A coupled solar battery enables direct solar-to-electrochemical energy storage via photocoupled ion transfer using photoelectrochemical materials with light absorption/charge transfer and redox capabilities. Common photoelectrochemical materials face challenges due to insufficient solar spectrum utilization, which restricts their redox potential window and constrains energy conversion efficiency. In contrast, molecular photoelectrochemical energy storage materials are promising for their mechanism of exciton-involved redox reaction that allows for extra energy utilization from hot excitons generated by superbandgap excitation and localized heat after absorption of sub-bandgap photons. This enables more efficient redox reactions with a less restricted redox potentials window and, thus, better utilization of the full solar spectrum. Despite these advantages, practical application remains elusive due to the mismatch between the short lifetime of the charge separation state (
Full text:
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01-internacional
Database:
MEDLINE
Language:
En
Journal:
Acc Chem Res
Year:
2024
Document type:
Article