Ni/Co/Co₃O₄@C nanorods derived from a MOF@MOF hybrid for efficient overall water splitting

Abstract

The design of nanostructured materials for efficient bifunctional electrocatalysts has gained tremendous attention, yet developing a fast and effective synthesis strategy remains a challenge. Here, we present a fast and...

A heterostructure of NiMn-LDH nanosheets assembled on ZIF-L-derived ZnCoS hollow nanosheets with a built-in electric field enables boosted electrochemical energy storage

“…S3†) of ZCS@LDH-6 displays three peaks at 284.8, 286.1 and 288.3 eV, which are related to the C–C, C–N/C–O and O–CO bonds, respectively. 27,28 The binding energy of the C 1s peak of adventitious carbon was set at 284.8 eV, and all other core levels were calibrated accordingly. ZCS@LDH-6 presents two pairs of spin–orbit splitting of Ni 2p 3/2 and Ni 2p 1/2 (Fig.…”

Heterointerface engineering of cobalt molybdenum suboxide for overall water splitting

“…Therefore, developing an efficient, durable electrocatalyst for the reactions (HER and OER) is of prime importance for enabling energy-efficient water splitting and hydrogen production. [6][7][8] The platinum group of metals (PGMs) is considered the state-of-art or benchmark catalysts for HER and OER. However, low availability and high cost hamper the widespread use of PGM in commercial applications.…”

“…58 The use of a bifunctional catalyst can make the overall system design easier and more cost-effective, and therefore, it is highly necessary to make efficient catalysts for both the HER and OER under alkaline conditions, which still remains a challenge. 7 While most of the reports on transition metal molybdate-based electrocatalysts focus on either HER or OER activity, it is to be noted that their bifunctional electrocatalytic activity (towards HER/OER) can be tuned through morphology and phase engineering approaches. Here, with an aim to enhance the bifunctional electrocatalytic activity of cobalt molybdate towards overall water splitting, we demonstrate a simple method involving the modulation of cobalt to molybdenum ratio and creation of phase-modulated heterointerfaces.…”

“…Therefore, developing an efficient, durable electrocatalyst for the reactions (HER and OER) is of prime importance for enabling energy-efficient water splitting and hydrogen production. 6–8…”

Pyrochlore-type cobalt and manganese antimonate electrocatalysts with excellent activity and stability for OER in acidic solution

“…5,7,[13][14][15] However, the development of catalysts with excellent performance for OER under acidic conditions is a major challenge, as catalysts based on noble metals, such as Ir/Ru-based alloys or oxides, are currently the most effective. 1,2,[16][17][18] However, the scarcity and high cost of these precious materials limit their widespread application, making it crucial to develop OER materials that can improve the water splitting efficiency in harsh acidic environments while maintaining the durability, activity, and affordability. 5,[19][20][21] Cobalt, an abundant earth-based metal with high activity, has recently emerged as a potential catalyst for OER.…”