aalto1 untyped-item.component.html
Fast and Stable Electrochemical Production of H2O2by Electrode Architecture Engineering
Loading...
Access rights
openAccess
acceptedVersion
URL
Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
This publication is imported from Aalto University research portal.
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Unless otherwise stated, all rights belong to the author. You may download, display and print this publication for Your own personal use. Commercial use is prohibited.
Date
Major/Subject
Mcode
Degree programme
Language
en
Pages
10
Series
ACS Sustainable Chemistry & Engineering, Volume 9, issue 20, pp. 7120-7129
Abstract
Fast and stable production of hydrogen peroxide (H2O2) through electrochemical pathways is crucial for wastewater treatment applications. With this objective, herein, we report an integrated and superaerophilic electrode composed of atomically dispersed Ni-O-C site-enriched carbon nanosheets (IS-NiOC electrode) for electrochemical oxygen reduction to produce H2O2. Both experimental and theoretical results have proven that atomically dispersed Ni-O-C sites enable a low overpotential (260 mV at 0.1 mA cm-2) and high selectivity (>90% at 0.0-0.5 V vs reversible hydrogen electrode (RHE)) in a neutral electrolyte. Compared with a commercial gas-diffusion electrode, the IS-NiOC electrode offers stronger affinity to oxygen bubbles and more robust three-phase contact points, resulting in high current density (∼106 mA cm-2 at 0.25 V vs RHE) and superior stability (∼200 h). These merits allow the application of the IS-NiOC electrode in an electro-Fenton-like process, which enables fast degradation of representative organic pollutants in both a steady state and a flow state.
Description
Funding Information: This work was supported by the Ningbo S&T Innovation 2025 Major Special Program (2020Z059 and 2020Z107), the BoXin project (BX20190339), the Natural Science Foundation of Ningbo (Nos. 2019A610442 and 202003N4351), the China Postdoctoral Science Foundation (Nos. 2019M662127and 2019M662124), and the Hundred Talents Programs in Chinese Academy of Science. The DFT calculation was supported by the High-Performance Computing Center of Collaborative Innovation Center of Advanced Microstructures, Nanjing University. Publisher Copyright: ©
Other note
Citation
Xu, W, Liang, Z, Gong, S, Zhang, B, Wang, H, Su, L, Chen, X, Han, N, Tian, Z, Kallio, T, Chen, L, Lu, Z & Sun, X 2021, 'Fast and Stable Electrochemical Production of H 2 O 2 by Electrode Architecture Engineering', ACS Sustainable Chemistry & Engineering, vol. 9, no. 20, pp. 7120-7129. https://doi.org/10.1021/acssuschemeng.1c01468