Hydrogen production from hydrogen sulfide via a uniquely designed electrolysis process: experimental investigation
Bibliographic record
Abstract
• The Fe-Cl hybrid process is experimentally validated for H 2 production from H 2 S. • H 2 production is tested using FeCl 3 and KOH electrolytes (20–80 °C). • EIS is used under potentiostatic and galvanostatic modes for cell characterization. • H 2 production increased by 426 % with temperature rise from 20–80 °C. • EIS results show reduced impedance and improved charge transfer efficiency. The present work aims to develop a uniquely designed experimental test rig for hydrogen (H 2 ) production from hydrogen sulfide (H 2 S) and perform performance tests. The experimental activity focuses on the FeCl 3 hybrid process for H 2 S cracking, followed by H 2 S absorption, sulfur purification, and electrolysis for efficient H 2 production. Hydrogen production is studied using KOH and FeCl 3 electrolytes under varying temperatures between 20-80 °C. An electrochemical impedance spectroscopy (EIS) is employed to characterize the electrochemical cell under potentiostatic (0.5-2.0 V) and galvanostatic (0-0.5 mA) modes to analyze the system’s electrochemical response. The study results showed that hydrogen production increased by over 426 % from 20 °C to 80 °C. EIS analysis under potentiostatic mode showed Nyquist semicircle diameter reduced as the applied voltage increased from 0.5 V to 1.5 V, and phase angle shifted from -5.59° to -1.27°, confirming enhanced conductivity. Under galvanostatic mode, the impedance dropped from ∼25 Ω to ∼21 Ω as current increased, demonstrating improved kinetics for efficient H 2 production.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".