Polyoxometalates‐Based Ionic Liquids (POMs‐ILs) for Electrochemical Applications

Abstract

Four Polyoxometalates based Ionic Liquids (POMs-ILs) have been developed and applied in electrochemical studies. In a conventional 3-electrode configuration cell the POM-ILs possess three quasi reversible electron transfers (ET) when compared to the commercially available POM under the same experimental conditions. It is also important to note that they presented bleaching and coloration processes faster than the commercially ones. In this configuration cell, the bleaching times are much higher than the coloration times. In this approach, POMs and POM-ILs as electrochromic materials and Deep Eutectic Solvents (DES) as electrolytes were tested in order to prepare efficient electrochromic devices (ECDs). The coloration of the ECD can be tuned by changing the counter cation of the POM-ILs as well as the amount of selected POM corresponding to the metals.

Newly-Obtained Two Organic-Inorganic Hybrid Compounds Based on Potassium Peroxidomolybdate and Dicarboxypyridinic Acid: Structure Determination, Catalytic Properties, and Cytotoxic Effects of Eight Peroxidomolybdates in Colon and Hepatic Cancer Cells

“…Currently, the electrochemical properties of POMs are particularly investigated. For example, Cruz et al presented new polyoxometalates-based ionic liquids and proved their activity in bleaching and coloration process [ 5 ]. Applications of PBA@POM hybrid (PBA: Prussian blue analogue) presented by Wang in 2019, confirmed their excellent electrocatalytic activity [ 6 ].…”

Ionic liquid-stabilized metal oxoclusters: from design to catalytic application

“…POM–ILs based on the phosphomolybate anion [PMo 12 O 40 ] 3− and organic imidazolium, pyridinium, and phosphorous cations were prepared and used as electrochromic materials with deep eutectic solvents as electrolytes to design efficient electrochromic devices. 155 Additionally, Mo-based electrodes derived from POM–IL, denoted as N/P-MoO 2 @carbon, were designed and exhibited advanced electrochemical performance. 156 The contents of C, N, P, and the pore geometry of N/P-MoO 2 @carbon networks can be easily tailored by adjusting the precursor's cyano group position, resulting in enhanced lithium storage performance.…”

Polyoxometalate as an Effective Catalyst for Catalytic Lignin into Value‐Added Molecules

“…The physical, rheological and chemical properties of POM‐ILs can be fine‐tuned by chemical modifications. Their potential has been explored in electrochemical applications [88] as well as in the dissolving and delignification of woody biomass [35] . Many studies have indicated that catalytic conversion of lignocellulosic biomass in POM‐ILs is a promising alternative avenue for fuels or fuel additives [89] .…”