Copper Metallopolymer Catalyst for the Electrocatalytic Hydrogen Evolution Reaction (HER)

Abstract

Conjugated polymers with stabilizing coordination units for single-site catalytic centers are excellent candidates to minimize the use of expensive noble metal electrode materials. In this study, conjugated metallopolymer, POS[Cu], was synthesized and fully characterized by means of spectroscopical, electrochemical, and photophysical methods. The copper metallopolymer was found to be highly active for the electrocatalytic hydrogen generation (HER) in an aqueous solution at pH 7.4 and overpotentials at 300 mV vs. reversible hydrogen electrode (RHE). Compared to the platinum electrode, the obtained overpotential is only 100 mV higher. The photoelectrochemical tests revealed that the complexation of the conjugated polymer POS turned its intrinsically electron-accepting (p-type) properties into an electron-donor (n-type) with photocurrent responses ten times higher than the organic photoelectrode.

Continuous Flow Fabrication of MoS2 Scrolls for Electrocatalytic Hydrogen Evolution

“…The obtained results were compared with the commercial catalyst Pt/C using the same mass loadings in deionized H 2 O (5 mg/mL). The working potentials recorded on the Ag|AgCl (1 M KCl) RE were converted into the reversible hydrogen electrode (RHE) according to the literature …”

Highly active platinum single-atom catalyst grafted onto 3D carbon cloth support for the electrocatalytic hydrogen evolution reaction

“…Recorded potentials were converted into reversible hydrogen electrode (RHE) as reported elsewhere. 39 Inductively coupled plasma optical emission spectroscopy (ICP-OES) was conducted on a Perkin Elmer Optima 800 instrument using standard calibration between 10 and 500 ppb Pt 2+ .…”

Highly Active Platinum Single-Atom Catalyst grafted onto 3D Carbon Cloth Support for the Electrocatalytic Hydrogen Evolution Reaction

“…Recorded potentials were converted into reversible hydrogen electrode (RHE) as reported elsewhere. [39] All electrochemical performance tests were conducted in the dark under protective N 2 atmosphere.…”