Electrolysis is the process of passing electric current through water to break it into hydrogen gas (at the cathode) and oxygen gas (at the anode). It's one of the oldest electrochemical processes — first demonstrated in 1800.
The baseline efficiency of conventional electrolysis is well-established: it takes about 237 kJ of electrical energy to produce 1 mole of hydrogen gas at standard conditions. This corresponds to a thermodynamic voltage of 1.23V per cell.
Why it appears in the patent literature
Several of the 768 patents claim that pulsed DC electrolysis produces more gas per watt-hour than steady DC electrolysis at the same average power. The most famous is Stanley Meyer's water fuel cell (US Patent 4,936,961), but there are dozens of others.
The proposed mechanism varies by patent, but the common thread is that pulsing the drive voltage creates transient conditions at the electrode surface — cavitation bubbles, nucleation cascades, and electrode-electrolyte boundary layer disruptions — that are non-linear and may couple with the cell's acoustic or electrical resonance.
In the experiments
The Baseline Electrolysis Efficiency experiment establishes a control measurement with steady DC. The Pulsed vs Steady DC Electrolysis experiment directly compares pulsed and continuous drive at the same average power. The Electrolytic Cell Resonance Characterization experiment finds the cell's resonant frequency before driving it.