Development of cost-effective and efficient electrocatalysts for oxygen reduction reaction (ORR) evolution (OER) is prime importance to emerging renewable energy technologies. Here, we report a simple effective strategy enhancing ORR OER electrocatalytic activity in alkaline solution by introducing A-site cation deficiency LaFeO3 perovskite; the enhancement effect more pronounced than ORR. Among deficient perovskites studied, La0.95FeO3-δ (L0.95F) demonstrates highest and, hence, best...

As a highly appealing technology for hydrogen generation, water electrolysis including oxygen evolution reaction (OER) at the anode and (HER) cathode largely depends on availability of efficient electrocatalysts. Accordingly, over past years, much effort has been made to develop various electrocatalysts with superior performance reduced cost. Among them, ruthenium (Ru)-based materials OER HER are very promising because their prominent catalytic activity, pH-universal application, cheapest...

Layered LiCo0.8Fe0.2O2 demonstrates dramatically enhanced oxygen evolution reaction (OER) activity and durability in an alkaline solution over LiCoO2 other reported state-of-the-art catalysts, including benchmark IrO2. This superior performance is attributed to Fe-doping-induced synergistic effects. As a service our authors readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed may be re-organized for online delivery, but not...

Abstract The self‐catalyzed growth of nanostructures on material surfaces is one the most time‐ and cost‐effective ways to design multifunctional catalysts for a wide range applications. Herein, use this technique develop multicomponent composite catalyst with CoS x core encapsulated in an ultrathin porous carbon shell entangled Co, N‐codoped nanotubes reported. as‐prepared has superior catalytic activity oxygen evolution reduction reactions, ultralow potential gap 0.74 V, outstanding...

Abstract Although metallic ruthenium (Ru) is a potential electrocatalyst for the hydrogen evolution reaction (HER) to replace platinum (Pt) at cost of only ≈4% Pt, persistent dissolution Ru under operation conditions remains challenge. Here, it reported that agglomerates large phosphide (RuP) particles (L‐RP, ≈32 nm) show outstanding HER performance in pH‐universal electrolytes, which particularly demonstrates surprisingly higher intrinsic activity and durability than small nanoparticles RuP...

Perovskite oxide is an attractive low-cost alternative catalyst for oxygen evolution reaction (OER) relative to the precious metal oxide-based electrocatalysts (IrO2 and RuO2). In this work, a series of Sr-doped La-based perovskite catalysts with compositions La1- xSr xFeO3-δ ( x = 0, 0.2, 0.5, 0.8, 1) are synthesized characterized. The OER-specific activities in alkaline solution increase order LaFeO3-δ (LF), La0.8Sr0.2FeO3-δ (LSF-0.2), La0.5Sr0.5FeO3-δ (LSF-0.5), SrFeO3-δ (SF),...

Abstract To date, various stretchable conductors have been fabricated, but simultaneous realization of the transparency, high stretchability, electrical conductivity, self‐healing capability, and sensing property through a simple, fast, cost‐efficient approach is still challenging. Here, α‐lipoic acid (LA), naturally small biological molecule found in humans animals, used to fabricate transparent (>85%), highly (strain up 1100%), rehealable (mechanical healing efficiency 86%, 96%) ionic...

Abstract Conductive hydrogels have shown great promise in the field of sustainable power sources due to their unique features sufficient flexibility, durability, and functional diversification. However, time‐ energy‐consuming polymerization process poor adaptability extreme environments severely impede practical application such an emerging field. Herein, a facile universal self‐catalytic system (AL‐Cu 2+ ) based on alkali lignin (AL) macromolecule has been designed rapidly fabricate...

With a rising energy demand and anabatic environmental crisis arising from the fast growth in human population society economics, numerous efforts have been devoted to explore design plentiful multifunctional materials for meeting high-efficiency transfer processes, which happen various developed conversion storage systems. As special kind of multi-metal oxides, perovskite with attractive physical chemical properties, is becoming rapidly star on horizon high-performance catalytic substantial...

Conductive hydrogels are emerging as an appealing material platform for flexible electronic devices owing to their attractive mechanical flexibility and conductive properties. However, the conventional water-based tend inevitably freeze at subzero temperature suffer from continuous water evaporation under ambient conditions, leading a decrease in electrical conductivities Thus, it is extremely necessary, but generally challenging, create antifreezing antidehydration gel maintaining high...

Abstract Eutectogels are emerging as an appealing soft conductor for self‐powered sensing and the next generation of flexible human–computer interactive devices owing to their inherent mechanical elasticity high ionic conductivity. However, it still remains a challenge simultaneously achieve multi‐functional multi‐response integrations through facile sustainable approach. Herein, self‐healing, environment tolerant, intrinsically conductive, recyclable eutectogel with multiple responses is...

Hydrogen production from renewable electricity relies upon the development of an efficient alkaline water electrolysis device and, ultimately, availability low cost and stable electrocatalysts that can promote oxygen evolution reaction (OER) hydrogen (HER). Normally, different are applied for HER OER because their intermediates mechanisms. Here, synthesis a heterostructured CoP@a-CoOx plate, which constitutes embedded crystalline cobalt phosphide (CoP) nanoclusters amorphous oxides (CoOx)...

Lanthanum (La)-based materials have been recognized as promising adsorbents for aqueous phosphate removal. The incorporation of base metals into La (oxy)hydroxides represents an effective strategy to improve adsorption performance. Understanding how affect is challenging but essential the development phosphorus control. Herein, we demonstrated a high-performance LaFe (oxy)hydroxide and studied its mechanisms on adsorption. P K edge X-ray absorption near structure (XANES) analysis showed that...

The high cost, scarcity, and poor stability of metallic platinum (Pt) as an oxygen reduction reaction (ORR) catalyst in fuel cells metal-air batteries have limited the commercialization these attractive clean-energy technologies. Thus, developing alternative electrocatalysts that are economical achieve maximized efficiency stably catalyzing ORR is prime importance societal pursuit sustainable energy. Metallic palladium (Pd) electrocatalyst less expensive than Pt; however, its current...

The vital role of ethylenediaminetetraacetic acid on the structure and oxygen reduction reaction activity non-precious-metal-based pyrolyzed catalyst is reported elaborated. resultant can overtake performance commercial Pt/C in an alkaline medium. Polymer electrolyte membrane fuel cell (PEMFC) offers much higher efficiency lower point-of-use emission over combustion engine.1 These advantages, addition to longer operating time fast refueling, render it more competitive than conventional...

Abstract Increasing energy demands have stimulated intense research activity on cleaner conversion such as regenerative fuel cells and reversible metal–air batteries. It is highly challenging but desirable to develop low‐cost bifunctional catalysts for both the oxygen reduction reaction (ORR) evolution (OER), lack of which currently one major limiting components towards commercialization these technologies. Here, we conducted a systematic study OER ORR performances Ruddlesden–Popper family...

Fabricating efficient bifunctional catalysts for both hydrogen/oxygen evolution reactions (HER/OER) in an easy and mass-productive way is highly attractive alkaline water electrolyzers. Perovskite oxides show compositional flexibility high property tunability, while poor electrical conductivity relatively low HER activity hamper their application overall splitting. Here, a conductive monoclinic SrIrO3 perovskite developed as excellent electrocatalyst with bifunctionality which can be easily...