Electrolyte engineering for effective seawater splitting based on manganese iron chromium layered triple hydroxides as novel bifunctional electrocatalysts

Abstract

Seawater splitting remain far-fetched due to interference of corrosive chlorine evolution reaction at anode. The lowering of overpotential with the help of effective electrocatalyst is one way to deal with...

Design of polymetallic sulfide NiS2@Co4S3@FeS as bifunctional catalyst for high efficiency seawater splitting

“…5c, under the same current density, NiS 2 @Co 4 S 3 @FeS also has the smallest overpotential compared with newly reported catalysts, and its catalytic performance is far superior. 49–57 We analyzed and fitted the LSV curve to obtain the Tafel slope, which can help us to further understand the reaction kinetics of the OER catalyst. The Tafel slope is closely related to the electron transport rate, and the lower the Tafel slope value is, the better the activity of the electrode is.…”

Metal nitrides for seawater electrolysis

“…68,71–73 Utilizing small molecule organic electrolytes with thermodynamic advantages as a replacement for seawater not only reduces energy costs but also avoids the harmful corrosion effects of Cl − on catalytic materials. 74–76 It is worth noting that the introduction of organic electrolytes may have an impact on the membrane, thus necessitating the development of durable and compatible membrane materials, which may further advance seawater electrolysis industry.…”

Defect Enriched Tungsten Oxide Phosphate with Strategic Sulfur Doping for Effective Seawater Oxidation

“…In the past few years, several works have been reported on designing transition metal-based oxides/hydroxides − or nonoxides in the form of nitrides, , phosphides, , or chalcogenides, , achieving low overpotential values in seawater electrolysis. There are different strategies of minimizing overpotential values of electrocatalysts, among which insertion of defects by various means is considered to be one of the effective ways.…”

“…Furthermore, the sustainability of electrocatalysts in alkaline seawater must be addressed to make the process practically acceptable. In this regard, phosphates have been recognized as a potential stabilizing group with their interesting ability to protect electrocatalysts, especially against chlorides, or provide mechanical stability to the structure of electrocatalysts during rigorous electrocatalytic reactions. , …”

“…In this regard, phosphates have been recognized as a potential stabilizing group with their interesting ability to protect electrocatalysts, especially against chlorides, or provide mechanical stability to the structure of electrocatalysts during rigorous electrocatalytic reactions. 13,22 Owing to such capability, metal phosphates have attracted attention these days and few informative reports indicate much potential nature toward seawater splitting. 24 Recently, our group reported irontuned cobalt phosphate electrocatalyst as an efficient OERactive electrocatalyst showing noteworthy performance in alkaline saline water and also in alkaline seawater avoiding CER.…”