Effect of operating parameters on hydrogen production by electrolysis of water

Hydrogen production by electrochemical reaction using ethylene glycol with terephthalic acid

“…3 The electrochemical method of generating hydrogen using water is a simple, environmentally friendly, and highly reliable technology, but it has a disadvantage of being a less efficient process than hydrogen production from fossil fuels. [4][5][6] Numerous researchers have investigated methods to improve the low efficiency by using catalysts [6][7][8][9] and inserting materials capable of generating hydrogen. [10][11][12] In water decomposition, water is decomposed into hydrogen and oxygen via a redox reaction, where an electric current ow between two electrodes in a device containing an electrolyte.…”

Critical challenges in biohydrogen production processes from the organic feedstocks

“…They found the highest energy efficiency of 82% and an exergy efficiency of 68% with the anion exchange membrane. Chakik et al [141] found a maximum efficiency of 99.13% with a production rate of 2.34 mL/ min using a Zn 95 %Cr 5 % electrode in 20 g/L NaOH solution at 0.45 A, 5 V. Kovač et al [142] studied H 2 production with a rate of 1.138 g/h from the electrolysis of alkaline water using solar energy. Bio-H 2 production through the biological methods, for instance, dark fermentation, can produce H 2 without light along with in photofermentation, and photosynthetic bacteria can use a wide range of spectral energy.…”

Dynamic Water Electrolysis in Cross‐Sectoral Processes

“…Starting with state of the art modeling approaches for water electrolysis , practical test series will be performed to asses selected performance sensitivities and to assess dynamic characteristics of the electrolytic process. Amongst others, the performance of the electrolytic system will be investigated and correlated to current density, electrolyte concentration, temperature and flow rate as recently addressed in literature to improve initial underlying static models . Sequentially and/or in parallel to these experiments, dynamic system identification will be executed to describe the thermal behavior of the system and to understand the system response to different applied electrical supply schemes , .…”