SOLAR-HYDROGEN EVIDENCE WORKSHEET
Yenra | Updated September 8, 2026
Article: https://yenra.com/hydrogen-fuel-seawater-sunlight/

PURPOSE
Read a solar/seawater hydrogen paper and state exactly what it demonstrates.
Use the methods, supplementary information and measured results; mark any
unavailable information OPEN. This is an evidence worksheet, not an experiment.

IDENTITY
Paper, DOI, authors, date:
Material / electrode / complete device / integrated system:
Photocatalytic, photoelectrochemical or PV-powered electrolysis pathway:

INPUTS
Illumination spectrum, intensity, area and duration:
Incident solar energy and calculation:
Electrical bias/input and its measurement:
External heat, pumps and supporting equipment:
Water: natural/simulated seawater, composition, pH and treatment:
Added/consumed chemicals, recovery and replenishment:

OUTPUTS AND METRIC
Hydrogen amount, purity, gas collection and calibration:
Other products and companion oxidation-reaction evidence:
Current density/area where relevant:
Reported metric and units:
Heating-value basis; included/excluded inputs:
Rate per catalyst mass versus rate per illuminated area:

FICTIONAL CHECK
1.0 kWh incident sunlight and 0.08 kWh hydrogen energy gives 8%
when sunlight is the sole counted input on the stated heating-value basis.
If 0.10 kWh electricity is also supplied, 0.08/1.10 = 7.27% on the
expanded energy-input boundary. Other consumed inputs require accounting.
These figures are invented and are not results from a cited paper.

DURABILITY AND SCALE
Test duration, operating conditions, degradation and interventions:
Natural-water tests versus simulated-water device tests:
Corrosion, fouling, selectivity and gas-separation evidence:
Independent reproduction; integrated operation; scale:
Cost assumptions: equipment life, replacement, utilization, water treatment,
supporting energy, consumables and gas handling:

CONCLUSION
Under [conditions], [material/device] produced [measured result] for [duration].
Evidence still needed for the intended application:
Comparison pathway and aligned system boundary:
Open issue | source/test needed | reviewer | date:

REFERENCE CONTEXT
The linked article explains the comparisons and limits. Check exact project or equipment documents before using a specification.
photoelectrochemical water-splitting explanation
https://www.energy.gov/cmei/fuels/hydrogen-production-photoelectrochemical-water-splitting
Guo and colleagues' MoS₂/TiO₂ photocatalyst paper
https://doi.org/10.1039/C7EE02464A
2024 Nature Communications study
https://www.nature.com/articles/s41467-024-53724-1