Polyoxometalate-coupled MXene nanohybridviapoly(ionic liquid) linkers and its electrode for enhanced supercapacitive performance

Abstract

A novel and effective strategy for preparing polyoxometalate-coupled MXene nanohybridsviapoly(ionic liquid) linkers is presented for enhanced supercapacitive performance.

Enhancing Capacitance Performance of Ti3C2Tx MXene as Electrode Materials of Supercapacitor: From Controlled Preparation to Composite Structure Construction

“…Electrode materials are one of the critical factors affecting the capacitance performance of supercapacitors. The common electrode materials include carbon-based materials [7][8][9], transition metal oxides (TMOs) [10], conductive polymers (CPs), and so on [11][12][13][14]. Nevertheless, the prior researches have proved that the low density of carbon-based materials, the poor conductivity of TMOs, and the instable structure of CPs hinder them from achieving ideal capacitance performance [15,16].…”

Poly(ionic liquid) composites

“…To date, PILs have successfully formed many functional composites with metal salts or metal nanostructures, polyoxometalates (POMs), silicas, organic compounds, polymers, metal-organic frameworks (MOFs), carbons (amorphous carbons, graphene, carbon nanotubes), biomaterials, and more. [11][12][13][14][15][16][17][18][19][20] Such composites are intensively explored for use in sorption, separation and catalysis processes and in products including batteries, supercapacitors, fuel cells, photovoltaic devices, sensing platforms, and so on. [21][22][23][24][25] This review will expound this research trend and promote efforts to understand the fundamentals of the role of PILs as an active component for composite design and applications.…”

Polyoxometalates as components of supramolecular assemblies

“…carbon nanotubes and graphene due to physisorption24,69a,86–89 or through linking moieties such as polymers10,61,63,67,69a or ionic liquids 21,90,91. The preparation of such POM-modified materials is usually performed either by simple impregnation of the substrates into solutions of the POM compounds24,69a,86–88,90 or by the layer-by-layer technique 10,21,61,63,67,69a,90,91. The molecular organisation of POMs on a gold surface via electrostatic interactions is best exemplified by the successful immobilisation of highly negatively charged [H 7 P 8 W 48 O 184 ] 33– POMs onto the positive charge bearing 8-amino-1-octanethiol covered Au electrode 92.…”

“…Devices which are built via non-covalent attachment of the POM units at surfaces are actively investigated for application in catalysis,61,69a,87,89 sensorics,63,69a molecular electronics,92 neuromorphic computing,24,93 proton conductors88 and energy storage and conversion 10,21,67,69a,86,90,91…”