A New Anderson‐Type Polyoxometalate‐Based Metal‐Organic Complex for Multi‐Functional Electrochemical Application

Abstract

A new Anderson-type polyoxometalate(POM)-based one-dimensional metal-organic complex, namely,was synthesized by hydrothermal method. Implement basic characterization operations of single crystal X-ray diffraction, IR spectroscopy, X-ray powder diffraction and thermogravimetric analysis were performed. Complex 1 possesses not only the typical electrochemical behavior of the Anderson-type polyoxoanion, but also excellent electrochemical stability. The carbon paste electrode bulk modified by complex 1(1-CPE) can be used as an ampere sensor to detect potassium nitrite. The carbon clothbased electrode fabricated by complex 1(1-CC)was capable of being used as electrocatalyst for hydrogen evolution reaction, the overpotential is 480 mV at the current density of 10 mA cm À 2 . 1-CC can also be used as capacitor electrode, which shows an area capacitance of 293 mF cm À 2 in 0.1 M H 2 SO 4 solution and up to 10 hours of life stability. It can maintain 89.7 % of the capacitance after 1000 cycles of constant current charge/discharge.