Constructing stable charge redistribution through strong metal–support interaction for overall water splitting in acidic solution

Abstract

To design bifunctional electrocatalysts with high activity and durability for overall water splitting in acid electrolytes is still a huge challenge because their excellent activity is difficult to maintain. Herein,...

Ultrathin IrRu nanocages with tunable electronic reciprocity for highly efficient water splitting in acidic media

“…4g and Table S1 †. [37][38][39][40][41][42][43][44][45][46][47][48][49] Since the electro-chemical stability is a major criterion to evaluate the practicability of electrocatalysts, ADTs were performed for a series of Ir x Ru 1−x nanocages. Aer 1000 cycles, the h 10 loss of Ir 0.5 Ru 0.5 nanocages for the HER and OER was determined to be 7 (Fig.…”

“…1–4 For commercializing this technology in practical applications, developing bifunctional electro-catalysts with high intrinsic activity and durability for both the HER and the OER is essential. 5,6 Especially in acidic media, which possess relatively high thermodynamic barriers, sluggish kinetics and harsh operation conditions, it still remains a grand challenge to develop active, efficient, and long-life electrocatalysts because most of the non-precious metal catalysts are inoperative under such extremely corrosive conditions. 7–10…”

“…[1][2][3][4] For commercializing this technology in practical applications, developing bifunctional electrocatalysts with high intrinsic activity and durability for both the HER and the OER is essential. 5,6 Especially in acidic media, which possess relatively high thermodynamic barriers, sluggish kinetics and harsh operation conditions, it still remains a grand challenge to develop active, efficient, and long-life electrocatalysts because most of the non-precious metal catalysts are inoperative under such extremely corrosive conditions. [7][8][9][10] At the moment, Ir and Ru catalysts have been integrated to advance the bifunctional performance of water splitting in acidic media, due to their intrinsic activity located near the top of HER and OER volcano plots and the excellent acid resistance.…”

Two-Dimensional Geometry-Dependent Interfaces for Enhanced Water Splitting Kinetics

“…To address the obvious contradiction between reaction activities and manufacture costs, one of effective solutions is to incorporate these noble metal-based active particles onto non-noble metal oxides as the supporters. − By using this approach, some intriguing features contributed by non-noble metal oxides, such as the abundant redox chemistry and the tunable bandgap, could be integrated, accompanied by the reduced consumption of noble metals. Furthermore, the rational combination of the noble metal-based particles and the metal oxide supporters could induce the unique particle–support interactions for regulating the electronic structures, stabilizing the active centers, and thus improving catalytic activities. − Hence, it is crucial to achieve the good matching between the noble-metal particles and the metal oxide supporter, and the selection of the matching counterparts is a prerequisite for generating particle–support interactions. − …”

Atomic order transition of TiNiPt nanoparticles supported on carbon nanotubes for the stable hydrogen evolution reaction

“…[1][2][3][4][5] Pt is currently considered to be the best HER electrocatalyst, but its low abundance, high cost, low utilization rate, and limited stability limit its development. [6][7][8][9][10] Reducing the amount of Pt and improving the catalytic activity can be achieved by combining Pt with transition metals (such as Ni, 11 W, 12 Ti, 13 Mo, 14 Fe, 15 and Te 16 ).…”