Superior overall water splitting electrocatalysis in acidic conditions enabled by bimetallic Ir-Ag nanotubes

Recent Advances on Water‐Splitting Electrocatalysis Mediated by Noble‐Metal‐Based Nanostructured Materials

“…In addition, this novel Rh 2 P catalyst could work as superior electrocatalysts for pH‐universal overall water splitting, a promising alternative to state‐of‐the‐art catalysts. In this case, further reducing mass loading of noble metals for reducing the cost of these catalysts, noble‐metal‐based M x P (M = Ru, Rh, Ir, namely, P‐rich) catalysts with x < 2 were successfully synthesized by annealing Ru/Rh/Ir precursors and phytic acid under Ar and NH 3 atmospheres derived from pyrolysis of melamine 51,54. Thanks to the introduction of P into Ir nanomaterials with tailoring the H adsorption energy and synergistic effect between P‐rich M x P and carbon support, P‐rich M x P showed excellent performance toward water splitting.…”

“…[50] The IrAg nanotubes were fabricated by reduction of Ir and Ag precursors into nanowires using n-octyltrimethylammonium bromide as structure-directing agent followed by selective etching fractional Ag using HNO 3 . [51] Pt-rich PtCo/Ir-rich IrCo trimetallic interface fishbone-like nanowires were successfully synthesized in the oleylamine system by using cetyltrimethylammonium chloride as the surfactant and glucose as the reductant. [44c] The rough morphology, alloying Co with Ir and Pt, respectively, and interface of Pt/Co and IrCo synergistic effect are beneficial to improving water splitting performance.…”

“…In this case, further reducing mass loading of noble metals for reducing the cost of these catalysts, noble-metal-based M x P (M = Ru, Rh, Ir, namely, P-rich) catalysts with x < 2 were successfully synthesized by annealing Ru/Rh/Ir precursors and phytic acid under Ar and NH 3 atmospheres derived from pyrolysis of melamine. [51,54] Thanks to the introduction of P into Ir nanomaterials with tailoring the H adsorption energy and synergistic effect between P-rich M x P and carbon support, P-rich M x P showed excellent performance toward water splitting. These results highlight the importance of alloying NM with heterogeneous elements for electrocatalytic reactions.…”

Graphdiyne: A Rising Star of Electrocatalyst Support for Energy Conversion

“…The results displayed that CoN x @GDY NS/NF only needed relatively low cell voltage of 1.48 V to achieve the current density of 10 mA cm −2 , which was lower than that of other prepared materials and comparable to or even slightly superior to that of recently developed catalysts ( Table 2 ). [ 142–156 ] Furthermore, this CoN x @GDY NS/NF also stayed almost high current density of 10 mA cm −2 within 20 hours, further corroborating its strong durability.…”

Facile doping of nickel into Co3O4 nanostructures to make them efficient for catalyzing the oxygen evolution reaction

“…The OER is a naturally slow reaction, so we need to use catalysts to lower the energy barrier and hence increase the rate of the reaction. [26][27][28][29][30] In the recent past, extensive studies have been carried out on the utilization of earth-abundant materials for the OER such as metal oxides including cobalt oxide, [31][32][33][34] nickel oxide, [35][36][37] manganese oxide, 38,39 etc.…”