Strongly Coupled Cobalt Diselenide Monolayers for Selective Electrocatalytic Oxygen Reduction to H2O2 under Acidic Conditions
- 22 September 2021
- journal article
- research article
- Published by Wiley in Angewandte Chemie
- Vol. 60 (52), 26922-26931
- https://doi.org/10.1002/anie.202111075
Abstract
Electrosynthesis of hydrogen peroxide (H2O2) in the acidic environment could largely prevent its decomposition to water, but efficient catalysts that constitute entirely earth-abundant elements are lacking. Here we report the experimental demonstration of narrowing the interlayer gap of metallic cobalt diselenide (CoSe2), which creates high-performance catalyst to selectively drive two-electron oxygen reduction toward H2O2 in an acidic electrolyte. The enhancement of the interlayer coupling between CoSe2 atomic layers offers a favorable surface electronic structure that weakens the critical *OOH adsorption, promoting the energetics for H2O2 production. Consequently, on the strongly coupled CoSe2 catalyst, we achieved Faradaic efficiency of 96.7%, current density of 50.04 milliamperes per square centimeter, and product rate of 30.60 mg cm-2 h-1. Moreover, this catalyst shows no sign of degradation when operating at -63 milliamperes per square centimeter over 100 hoursKeywords
This publication has 58 references indexed in Scilit:
- Mesoporous Nitrogen-Doped Carbon for the Electrocatalytic Synthesis of Hydrogen PeroxideJournal of the American Chemical Society, 2012
- A Methanol‐Tolerant Pt/CoSe2 Nanobelt Cathode Catalyst for Direct Methanol Fuel CellsAngewandte Chemie, 2011
- A Methanol-Tolerant Pt/CoSe2 Nanobelt Cathode Catalyst for Direct Methanol Fuel CellsAngewandte Chemie, 2011
- Electro-Fenton Process and Related Electrochemical Technologies Based on Fenton’s Reaction ChemistryChemical Reviews, 2009
- Synthesis of Unique Ultrathin Lamellar Mesostructured CoSe2−Amine (Protonated) Nanobelts in a Binary SolutionJournal of the American Chemical Society, 2009
- Acid-Induced Conversions in Open-Framework Semiconductors: From [Cd4Sn3Se13]6− to [Cd15Sn12Se46]14−, a Remarkable Disassembly/Reassembly ProcessAngewandte Chemie, 2006
- Acid-Induced Conversions in Open-Framework Semiconductors: From [Cd4Sn3Se13]6− to [Cd15Sn12Se46]14−, a Remarkable Disassembly/Reassembly ProcessAngewandte Chemie, 2006
- Mesostructured Selenides with Cubic MCM-48 Type Symmetry: Large Framework Elasticity and Uncommon Resiliency to Strong AcidsJournal of the American Chemical Society, 2004
- Oxygen Contribution on Li-Ion Intercalation−Deintercalation in LiCoO2 Investigated by O K-Edge and Co L-Edge X-ray Absorption SpectroscopyThe Journal of Physical Chemistry B, 2002
- Effect of Strain on the Reactivity of Metal SurfacesPhysical Review Letters, 1998