An efficient and stable solar flow battery enabled by a single-junction GaAs photoelectrode.

ABSTRACT: Converting and storing solar energy and releasing it on demand by using solar flow batteries (SFBs) is a promising way to address the challenge of solar intermittency. Although high solar-to-output electricity efficiencies (SOEE) have been recently demonstrated in SFBs, the complex multi-junction photoelectrodes used are not desirable for practical applications. Here, we report an efficient and stable integrated SFB built with back-illuminated single-junction GaAs photoelectrode with an n-p-n sandwiched design. Rational potential matching simulation and operating condition optimization of this GaAs SFB lead to a record SOEE of 15.4% among single-junction SFB devices. Furthermore, the TiO₂ protection layer and robust redox couples in neutral pH electrolyte enable the SFB to achie

SUBMITTER: Fu HC 

PROVIDER: S-EPMC7794367 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature