Polyoxometalates: Tailoring metal oxides in molecular dimension toward energy applications

Abstract

Summary Polyoxometalates could be viewed as the molecular counterpart of the metal oxides, which are essential ingredients for various energy conversion and storage applications. In this manuscript, we review the progress of engineering functional polyoxometalates toward energy applications, focusing on, but not limited to, polyoxotitanate, polyoxotungstate, and polyoxomolybdate. These polyoxometalates are considered to be promising candidates for dye‐sensitized solar cell, perovskite solar cell, lithium‐ion battery, lithium‐sulfur battery, supercapacitor, and water‐splitting system. We believe advanced energy devices with better performance could be derived from further engineering the polyoxometalates owing to their molecular design flexibility.

Halide Perovskite Materials for Energy Storage Applications

“…Various energy conversion materials have been devised to harvest the solar energy, which is considered to the clean and inexhaustible. [1][2][3][4][5][6][7] In the meantime, various energy storage materials have been devised to supply energy for electric vehicles and portable electronic devices that are pollution free. The coordinated development of the energy conversion and energy storage materials offers an effective approach for energy sustainable cities.…”

Phosphotungstic acid‐Titania loaded polyaniline nanocomposite as efficient methanol electro‐oxidation catalyst in fuel cells

“…HPAs are easily accessible, soluble in water, strong acidic nature, oxo-enriched surfaces, multielectron redox properties, strongly electronegative behavior, and various hydrated structures depending on the environment. 20,21 Numerous research studies have focused on the significant application of the HPAs as electrocatalyst for fuel cells. 8,[22][23][24] The molecular formula of PTA is H 3 PW 12 O 40 , and it is Keggin type structure contains phosphorus atom bounded by tungsten oxide clusters and four types of oxygen atom founded in Keggin structure.…”

Microwave‐assisted synthesis of cobalt‐polyoxometalate @carbon black nanocomposites and their electrocatalytic ability toward oxygen reduction reaction

“…Generally, POMs are consisting of oxides of transition metals like Mo, W, and V in higher oxidation state along with phosphates or silicates. 12,13 POMs are kinetically stable as well as they show versatile redox property, which make them promising candidate for numerous applications including energy conversion and storage devices, 14,15 chemical and biochemical sensing, 14 medicine, 16 and so on. Also, the metallic sites in POMs can be easily substituted by other transition metals that are active for redox reactions, 17 thus combining the properties of both POMs and the substituted transition metal.…”