Triple Product Overall Water Splitting – An Environment Friendly and New Direction Water Splitting in Sea‐Water Mimicking Electrolyte

Abstract

Hydrogen production is highly desirable which is wellorganized water-electrolysis system using sea-water, but it is a big challenge to manage it by the use of conventional catalysts. The present study demonstrates the efficient triple-product water-electrolysis system, which operates for > 100 h in highly chloride containing alkaline electrolyte (6 M NaOH with satu-rated NaCl). While sea-water exhibits salinity of ∼ 3.5 %, where ClÀ followed by Na + is predominant specie. The water electrolysis system with nafion membrane also produces triple product. The water-electrolysis system produces environmentally friendly triple product using NiMo as cathode and NiFe LDH as anode such as H2, O2, and crystalline NaCl.

Solid‐State Redox Mediators for Decoupled H2 Production: Principle and Challenges

“…[1] The consumption of non-renewable fuels and the concomitant impacts on the environment, however, have new electrolysis systems (Figure 1). [30][31][32][33][34] However, it still faces great challenge for the practical application of water electrolysis. First, due to the simultaneous generation of H 2 and O 2 , an ion exchange membrane (or proton exchange membrane, or diaphragm) is generally needed to prevent gas mixing, [35][36][37][38] which increases the cost and internal resistance of the electrolysis system.…”

“…During the past few years, many endeavors have been made to improve the performance of water electrolysis, including developing high active catalysts for the HER and OER, [ 17–25 ] exploiting low‐cost and high‐performance membranes, [ 26–29 ] and building new electrolysis systems ( Figure 1 ). [ 30–34 ] However, it still faces great challenge for the practical application of water electrolysis. First, due to the simultaneous generation of H 2 and O 2 , an ion exchange membrane (or proton exchange membrane, or diaphragm) is generally needed to prevent gas mixing, [ 35–38 ] which increases the cost and internal resistance of the electrolysis system.…”

Phenazine‐based Compound Realizing Separate Hydrogen and Oxygen Production in Electrolytic Water Splitting

“…The energy conversion efficiency and reaction rate of this architecture are limited by the overpotential of anode and cathode, and the resistance of membrane. Although many efforts have been devoted to improve its performance, such as exploiting high active HER and OER catalysts, [8][9][10][11] lowcost membranes [12][13][14] and new electrolytic systems, [15][16][17] there still exist some problems of water electrolysis. First, the inherent co-production of H 2 and O 2 may lead to the dangerously explosive gas to be produced under high/low operating currents.…”