Yan Duan

Yan Duan
Nanyang Technological University | ntu · School of Materials Science and Engineering

Bachelor of Engineering

About

13
Publications
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Publications

Publications (13)
Article
Full-text available
Electrochemically producing formate by oxidizing methanol is a promising way to add value to methanol. Noble metal-based electrocatalysts, which have been extensively studied for the methanol oxidation reaction, can catalyze the complete oxidation of methanol to carbon dioxide, but not the mild oxidation to formate. As a result, exploring efficient...
Article
CoCr2O4 activated at 1.7 V for 1.5 h (Act‐CoCr2O4) exhibits better OER activity compared to IrO2 in alkaline solutions. Pristine CoCr2O4 is originally inactive; activation (>1.56 V) promotes Cr leaching and lattice oxygen losses in CoCr2O4, leaving the highly defective surface for Co species to reconstruct into octahedrally coordinated Co3+–4+ oxyh...
Article
A rational design on oxygen evolution reaction (OER) catalysts is pivotal to the overall efficiency of water electrolysis. Numerous works have been devoted to understanding the cation leaching and surface reconstruction of some very active electrocatalysts, while few have been on intentionally promoting the surface in a controlled fashion. In this...
Article
The rational design of efficient catalysts can be guided by identifying proper descriptors that can rationalize and predict the catalytic behaviors. This study presents the feasibility of using the relative position between O p-band center and B-site metal cation d-band center as an activity descriptor for methane oxidation over LaCoO3 perovskite o...
Article
Recent studies have revealed the critical role played by the electrolyte composition on the oxygen evolution reaction (OER) kinetics on the surface of highly active catalysts. While numerous works were devoted to understand the effect of the electrolyte composition on the physical properties of catalysts’ surface, very little is known yet about its...
Article
Hydrogen production technologies have attracted intensive attention for their potential to cope with future challenges related to renewable energy storage and conversion. However, the significant kinetic barriers associated with the oxygen evolution reac-tion (OER), one of the two half reactions at the heart of water electrolysis, greatly hinder th...
Article
Exploring active and low-cost spinel catalysts for complete methane oxidation is essential for the development of efficient air purification technologies. Herein, a series of spinel oxides ZnNixCo2-xO4 (x = 0–0.8) were synthesized to investigate the origin of their electronic structure dependent activities and mechanisms for methane oxidation. The...
Article
Full-text available
Developing highly active electrocatalysts for oxygen evolution reaction (OER) is critical for the effectiveness of water splitting. Low‐cost spinel oxides have attracted increasing interest as alternatives to noble metal–based OER catalysts. A rational design of spinel catalysts can be guided by studying the structural/elemental properties that det...
Article
Mn–Co containing spinel oxides are promising, low-cost electrocatalysts for the oxygen reduction reaction (ORR). Most studies are devoted to the design of porous Mn–Co spinels or to strongly coupled hybrids (e.g., MnCo2O4/N-doped-rmGO) to maximize the mass efficiency. The lack of analyses by metal oxide intrinsic activity (activity normalized to ca...
Article
LaCoO3 is an active, stable catalyst in alkaline solution for oxygen evolution reaction (OER). With lower cost, it is a potential alternative to precious metal oxides like IrO2 and RuO2 in water electrolysis. However, room still remains for improving its activity according to recent understandings of OER on perovskite oxides. In this work, Fe subst...