Enhancing the electrochemical capacitor performance of Keggin polyoxometalates by anchoring cobalt-triazole complexes

Recent advances in supramolecular self-assembly derived materials for high-performance supercapacitors

“…Another strategy is to combine POMs with a suitable metal-organic complex (MOC), which not only perfectly overcomes the inherent disadvantages of pure POM electrodes, but also provides additional advantages to the electrode material (including but not limited to an ordered crystal structure, modulated conductivity and rate properties, and low solubility in water and common organic solvents). [118][119][120][121] Additionally, the POM-based MOC electrode material can be obtained by a simple hydrothermal method, and its clear structure facilitates the study of the corresponding relationship between the structure and properties. Hydrogen bond supramolecular scaffolds (HSFs) are a subclass of MOCs.…”

Solid-state supercapacitors based on polyoxometalate-based crystalline materials modified with polyaniline

“…POM-based complexes can maintain structural stability, allowing for reversible electron transfer, which has emerged as a promising class of electrode materials. [20][21][22][23][24][25][26][27][28][29] The above features enable POM-based complexes as electrode materials to effectively improve the electrochemical performance of SCs. The promising electrochemical performance of POM-based complexes may be attributed to four main reasons: (i) these complexes contain polyanions, which endow them with excellent redox properties; (ii) POM-based complexes with three-dimensional framework structure may facilitate electronic transport; (iii) POM-based complexes possess lower solubility in water and organic solvents, which is attributed to the synthetic methods and the presence of metal-POM bonds; 14 (iv) the introduction of metal ions and N-based organics can modulate the conductivity and rate capability, and enhance the stability in the process of charge/discharge.…”

Assembly and pseudocapacitive electrode materials application of octamolybdates based coordination polymers

“…In 2021, a new 12-phosphomolybdate-pillared CPs with the twofold meso-helical feature, [Ni 7 (1,2, O 40 ] was successfully fabricated by our group through the hydrothermal method with the surfactant PEG-2000, which displays good capacitance performance 481.1 F g À 1 at 1 A g À 1 . [27] After extensive literature research, most POMCP as pseudocapacitive materials are based on heteropolyacid, such as Keggin-, [28][29][30] Dawson-, [31,32] and Anderson-type, [33,34] few are based on isopolyacid. [35,36] So expanding the application of isopolyacid as SC materials is very meaningful for enriching POMs application.…”