Self‐Templated Conversion of Metallogel into Heterostructured TMP@Carbon Quasiaerogels Boosting Bifunctional Electrocatalysis

Abstract

Integration of nanostructured electrocatalysts into a 3D ordered assembly is beneficial for boosting their catalytic performance across various energy conversion applications. In this work, a self-templated carbonization strategy for synthesizing heterostructures of transition metal phosphide@nitrogen/phosphorus dual-doped carbon quasiaerogels (TMP@NPCA) is presented using a rationally designed precursor of a metallogel with Zn/M (M = Co, Fe, and Ni) bimetallic clusters (BMOG) and nitrogen/phosphorus chelate ligands. During the self-templated carbonization, the Zn ions among the BMOG boost a simultaneous catalytic carbonization and activation process of the resultant TMP@NPCA, whereas the M ions offer a versatile self-phosphating preparation of TMP nanoparticles (e.g., CoP, FeP, and Ni 2 P) within the TMP@NPCA. As a proof of concept, the TMP@NPCA catalysts deliver an excellent bifunctional catalytic activity and outstanding stability toward the oxygen reduction reaction and hydrogen evolution reaction, offering competitive advantages to achieve supreme bifunctional catalysis performance over the state-of-the-art TMP catalysts for renewable energy conversion systems.

Metal‐Free Multi‐Heteroatom‐Doped Carbon Bifunctional Electrocatalysts Derived from a Covalent Triazine Polymer

“…It was caused by the generated gases from the pyrolysis of CTPs via a self-activation mechanism. [55] This further confirmed that heteroatom abundant CTPs can indeed be considered as ideal precursors for the preparation of metal-free carbon catalysts with abundant pores. [56] In this case, the predesigned N, P, F components in NPF-CNS-2 were fully exposed as active centers for improving ORR/OER electrocatalytic performance.…”

Solvent‐Exchange Strategy toward Aqueous Dispersible MoS2 Nanosheets and Their Nitrogen‐Rich Carbon Sphere Nanocomposites for Efficient Lithium/Sodium Ion Storage

“…N 1s XPS spectra for the MoS 2 ‐NCS‐2 (Figure d) can be fitted into three principal peaks of binding energies of 400.8, 398.5, and 395.4 eV, respectively, corresponding to quaternary‐N, pyrrolic‐N, and Mo 3p 3/2 , respectively 5c,26. Similar peaks are found in the MoS 2 ‐NCS‐1 and MoS 2 ‐NCS‐3 (Figure S13a,b, Supporting Information).…”

Large‐Size, Porous, Ultrathin NiCoP Nanosheets for Efficient Electro/Photocatalytic Water Splitting

“…Transition‐metal phosphides such as Ni 2 P and CoP have been studied as substitutes for noble metal catalysts owing to their metallic characters, efficient catalytic performance, durability as well as cost‐effectiveness. [ 9–14 ] The catalytic activity of transition metal phosphide is due to a moderate interaction between phosphorus and the reaction intermediate to form a suitable surface structure as a proton acceptor site. [ 15–17 ] However, single‐phase metal phosphides suffer from an inferior catalytic performance compared with noble metal catalysts.…”