Metallenes as functional materials in electrocatalysis

Abstract

2D metals, metallenes, feature exciting opportunities at the forefront of electrocatalysis. We bring to attention metallene preparation techniques and modification strategies for the derivation of highly functional metallenes in key electrocatalytic applications.

Interstitial boron-triggered electron-deficient Os aerogels for enhanced pH-universal hydrogen evolution

“…Hydrogen, a carbon-free renewable energy source with the highest gravimetric energy density, is widely regarded as a useful alternative for conventional fossil fuels to solve the problems of fast-consuming fossil fuels, ever-increasing terawatt energy demand and severe environmental situation 1 – 3 . Among all hydrogen production methods, electrocatalytic water splitting driven by renewable electricity is an environmentally compatible, cheap, and feed-rich technology to produce high-purity hydrogen, which has attracted ongoing interests 4 , 5 . However, platinum (Pt) is still the state-of-the-art electrocatalyst for hydrogen evolution reaction (HER), especially in acid electrolytes, on account of its fast kinetic mechanism and optimal bonding strength with hydrogen 6 , 7 .…”

Co–NCNT nanohybrid as a highly active catalyst for the electroreduction of nitrate to ammonia

“…Additionally, coupling catalysts with carbon to form hybrids is of great benefit in achieving high catalyst dispersion, thus enhancing catalytic performance. [36][37][38][39][40][41][42][43] Moreover, carbon nanotubes have been widely developed as carbon supports to avoid particle aggregation due to their larger surface area and stability. [44][45][46] In this work, a Conitrogen-doped carbon nanotube (Co-NCNT) nanohybrid is proposed as an earth-abundant catalyst for electrochemical 1c) reveals lattice fringes with a distance of 0.21 nm indexed to the (111) plane of metallic Co.…”

Coupling of N‐Doped Mesoporous Carbon and N‐Ti3C2 in 2D Sandwiched Heterostructure for Enhanced Oxygen Electroreduction

“…2D heterostructures, representing 2D materials integration into one unit through tailored interaction, have recently been devoted to intense research due to the promise applications in energy conversion and storage, electronic devices, etc. [1][2][3][4][5][6][7][8] The prosperity of all these applications strongly is based on the flexibility of various 2D materials with tunable interlayer syner gistic interactions. Especially, customizing electronic bandgaps in coupled heterostruc tures would allow control of the interfacial interaction for specific applications.…”