Publications
Showing 54 results for Author: Xiang Lyu
Jul, 2025
Journal
Unsupported and Carbon-Supported Silver Catalysts for Oxygen Reduction Reaction in Alkaline Media
Quick and easy Ag catalysts preparation via wet chemical synthesis method using only reducing agent (pure-Ag); reducing agent and citric acid as the capping agent (Ag-CA); and carbon support (KetjenBlack 600J), capping agent, and the reducing agent (Ag/C) is demonstrated. The Ag-based electrocatalysts are characterized by high-angle annular dark-field scanning transmission…
Jul, 2025
Journal
Investigation of MOx (M = Cr, Mn, Re, and Mo) coated stainless-steel electrodes for oxygen evolution reaction in natural seawater electrolysis
Seawater electrolysis is considered a potential strategy for large-scale of affordable H2 production. However, poor durability of the anode for oxygen evolution reaction (OER) in natural seawater is a remaining concern due to chloride-induced reaction. Herein, the effect of various MOx (M = Mn, Cr, Re, and Mo) coated stainless steel (SS) electrodes on OER in direct natural…
May, 2025
Journal
Self-replenishing Ni-rich stainless-steel electrode toward oxygen evolution reaction at ampere-level
In the past few decades, tremendous attention has been devoted to enhancing the activity of oxygen evolution reaction (OER) catalysts for hydrogen production, while the cost and long-term stability of catalysts, which can play an even more important role in industrialization, have been much less emphasized. Herein, we engineered an OER electrode from abundant stainless ste…
Feb, 2025
Journal
Enhancing durability and activity toward oxygen evolution reaction using single-site Re-doped NiFeOx catalysts at ampere-level
NiFeOx materials are known as among the most active catalysts toward oxygen evolution reaction (OER) for hydrogen generation in alkaline media. Nevertheless, the long-term durability of NiFeOx catalysts for OER is still too far to the industrial application. Herein, we prepared a NiFeReOx catalyst with single-site Re dopants and observed that the single-site Re dopants cou…
Jan, 2025
Journal
X-ray Photoelectron Spectroscopy Investigation of Iridium Oxide Catalyst Layers: Insights into the Catalyst-Ionomer Interface
X-ray photoelectron spectroscopy (XPS) is a commonly used technique for investigating the surface properties and composition of catalysts used in polymer electrolyte membrane fuel cells and electrolyzers. XPS analysis of catalyst layers (CLs) is becoming increasingly utilized to provide greater understanding of CL properties and relationships between catalyst and support c…
Jan, 2025
Journal
Evaluation of IrO2 catalysts doped with Ti and Nb at industrially relevant electrolyzer conditions: A comprehensive study
A series of commercial Oxygen Evolution Reaction (OER) IrO2-based materials doped with acid-stable titanium and niobium species were comprehensively characterized by Brunauer-Emmett-Teller (BET), X-ray diffraction analysis (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM) with energy dispersive spectroscopy (EDS), and X-ray Scattering. E…
Dec, 2024
Journal
Synthesis of rhenium coatings on 316 stainless steel and their electrochemical behavior towards water oxidation in saline environments
The production of electrolytic hydrogen or Green Hydrogen has attracted the attention of scientists as a potential enabler of sustainable energy production. The cleavage of the water molecule requires high energy, in order to produce hydrogen and oxygen through their corresponding half reactions, the hydrogen evolution and oxygen evolution reactions. This latter reaction h…
Nov, 2024
Journal
Machine learning-guided design of direct methanol fuel cells with a platinum group metal-free cathode
Direct methanol fuel cells (DMFCs) offer a promising solution for clean electricity generation, particularly in small electronics and remote auxiliary power units. However, optimizing their efficiency and performance is challenging due to the complex interactions between various factors. Here, we present a novel approach that integrates experiments with machine learning to…
Nov, 2024
Journal
Exploring the Potential and Impact of Single-Crystal Active Materials on Dry-Processed Electrodes for High-Performance Lithium-Ion Batteries
Roll-to-roll powder-to-film dry processing (DP) and single-crystal (SC) active materials (AMs) with many advantages are two hot topics of lithium-ion batteries (LIBs). However, DP of SC AMs for LIBs is rarely reported. Consequently, the impact of SC AMs on dry-processed LIBs is not well understood. Herein, for the first time, via a set of experimental and theoretical studi…
Aug, 2024
Journal
In-situ ionothermal synthesis of nanoporous carbon/oxide composites: A new key to functional separators for stable lithium-sulfur batteries
Lithium-sulfur batteries (LSBs) with high energy density are promising for energy storage. However, conventional polypropylene-based separator cannot avoid polysulfides shuttling which impedes the practical application of LSBs. Herein, an in-situ ionothermal synthesis strategy that concurrently applies ionic liquid as the solvent, template and high-yield carbon source is p…
Aug, 2024
Journal
Is Pt dissolution a concern from the counter electrode in electrochemical oxygen evolution reaction?
The Pt metal and its oxides dissolution from the counter electrode (CE, in hydrogen evolution reaction (HER)) has been suspected to affect the non-noble metal catalysts toward oxygen evolution reaction (OER). However, little effort has been devoted to this concern, and this work aims to determine the effect. The influence of electrolytes (H2SO4 and NaOH) and Pt CE (acid-tr…