Recent Advances in Layered-Double-Hydroxides Based Noble Metal Nanoparticles Efficient Electrocatalysts

Abstract

With the energy crisis and environmental pollution becoming more and more serious, it is urgent to develop renewable and clean energy. Hydrogen production from electrolyzed water is of great significance to solve the energy crisis and environmental problems in the future. Recently, layered double hydroxides (LDHs) materials have been widely studied in the electrocatalysis field, due to their unique layered structure, tunable metal species and highly dispersed active sites. Moreover, the LDHs supporting noble metal catalysts obtained through the topotactic transformation of LDHs precursors significantly reduce the energy barrier of electrolyzing water, showing remarkable catalytic activity, good conductivity and excellent durability. In this review, we give an overview of recent advances on LDHs supporting noble metal catalysts, from a brief introduction, to their preparation and modification methods, to an overview of their application in the electrocatalysis field, as well as the challenges and outlooks in this promising field on the basis of current development.

Characteristics of low-pressure-plasma-processed NiRu-MOFs/nickel foam for Hydrogen evolution reaction

“…The electric double-layer capacitance (C dl ) could be used to estimate the electrochemically active surface area (ECSA), according to the equation of ECSA = C dl / C s , where the C s is the specific capacitance of the sample material [59,60]. By the equation, the higher C dl value indicates the higher ECSA and more active sites for hydrogen evolution [11,[61][62][63][64]. Figure 8(d) shows the results of CV measurements with the scan rates of 20-300 mV s −1 .…”

Recent advances in layered double hydroxides‐based electrochemical sensors: Insight in transition metal contribution

“…Remarkably, all these LDHs can be readily prepared through simple synthesis methods, like coprecipitation at controlled pH or electrodeposition, enabling their composition and morphology to be tuned at the nano‐scale. Moreover, carboneous materials [9], e. g. graphene (G), reduced graphene oxide (RGO), multiwall carbon nanotubes (MWCNTs), or metal nanoparticles (M‐NPs) [10] can be associated with the LDHs that allows to deeply modulate the specific properties of the resulting nano‐composite materials, for instance their electrical conductivity.…”

Emerging Heterogeneous Supports for Efficient Electrocatalysis

“…[1][2][3][4][5] Especially under the present pressure of the carbon peaking and carbon neutrality goals, electrocatalysis has sparked intensive attention for its ability to use renewable energy and alleviate energy crises. [6][7][8] The electrochemical reactions involved in electrocatalysis mainly include oxygen reduction reaction (ORR), oxygen evolution reaction (OER), hydrogen evolution reaction small molecule (ethanol, methanol, formic acid, etc.) oxidation reactions.…”

“…[ 1–5 ] Especially under the present pressure of the carbon peaking and carbon neutrality goals, electrocatalysis has sparked intensive attention for its ability to use renewable energy and alleviate energy crises. [ 6–8 ] The electrochemical reactions involved in electrocatalysis mainly include oxygen reduction reaction (ORR), oxygen evolution reaction (OER), hydrogen evolution reaction (HER), CO 2 reduction reaction (CO 2 RR), nitrogen reduction reaction (NRR), and so forth, which are all basic reactions in energy storage and conversion. [ 9–12 ] Electrocatalysts are the key component in determining reaction efficiency and energy utilization.…”