Molecular Photoelectrochemical Energy Storage Materials for Coupled Solar Batteries Solar-to-electrochemical energy storage is one of the essential solar energy utilization pathways alongside solar-to-electricity and solar-to-chemical conversion.
Newly developed photoelectrochemical energy storage (PES) devices can effectively convert and store solar energy in one two-electrode battery, simplifying the configuration and decreasing the external energy loss.
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.
Based on PES materials, the PES devices could realize direct solar-to-electrochemical energy storage, which is fundamentally different from photo (electro)catalytic cells (solar-to-chemical energy conversion) and photovoltaic cells (solar-to-electricity energy conversion).
Photovoltaic cells now hold the highest potential for widespread sustainable electricity production and photo (electro)catalytic cells could supply various chemicals. However, both of them re Energy Frontiers: Electrochemistry and Electrochemical Engineering
A trough solar collector was used to provide sufficient heat for the reaction. Wind turbines convert the wind energy into electrical energy to promote hydrogen separation. Energy storage devices store excess heat and electricity. The efficiency of hydrogen production from solar and wind energies was 24.53%.