A vast exploration of improvising synthetic strategies for enhancing the OER kinetics of LDH structures: a review

Abstract

In last few decades, Layered Double Hydroxides (LDHs) based materials have taken much attention of the researchers due to their significant advancements in enabling efficient oxygen evolution. Having exceptional layered...

Tuning the intrinsic catalytic activities of oxygen-evolution catalysts by doping: a comprehensive review

“…Hydroxides, oxyhydroxides, and layered double hydroxides (LDHs) of TM oxides, such as Ni, Co, Fe, Mn, and V, are highly active in electrocatalytic oxygen evolution reaction. 86,117,118 They exhibit typical layered stacking conformation with proton sandwiching between layers, and the metal is centered in the octahedron surrounded by oxygen anions at the corners as MO 6 . 117 Some representative hydroxides and their catalytic performances are listed in Table 2.…”

Layer‐by‐Layer Assembly‐Based Electrocatalytic Fibril Electrodes Enabling Extremely Low Overpotentials and Stable Operation at 1 A cm−2 in Water‐Splitting Reaction

“…[40,42] Additionally, it has been reported that the high electrical conductivity of the active material is a critical factor in achieving higher catalytic activities, which results in low R s values. [44,45] For example, the NiFe LDH nanoarrays with improved electrical conductivity by modulating the density of oxygen vacancies on the materials' surface showed improved catalytic activities with a marked reduction in R s values despite no notable geometrical changes. [46] In particular, very similar metal hydroxide composition and structure between NiFe LDH and EP Ni−cotton surface (i.e., Ni(OH) 2 ) allow for stable connection through strong interfacial interactions, enabling negligible contact resistance and fast charge transfer as well as stable performance retention.…”

Controllable synthesis of N-doped carbon nanohorns: tip from closed to half-closed, used as efficient electrocatalysts for oxygen evolution reaction

“…Oxygen evolution reaction (OER) catalysis constitutes the bottleneck for water splitting, solar cells, metal-air batteries, fuel cells and other renewable energy systems [1][2][3] due to the sluggish kinetics of the OER, which involves a complex fourelectron/proton transfer process. 4,5 Although noble metal oxides like IrO 2 and RuO 2 show excellent catalytic performance for the OER, their widespread development is restricted by their high cost and scarcity.…”