Exploring the influence of cell configurations on Cu catalyst reconstruction during CO2 electroreduction
Not provided.
Science & Technology - Other Topics↗
Engineering topics
Liu, Ershuai
Publications and source records attributed to Liu, Ershuai.
Self-Sacrificial Template Synthesis of Fe-N-C Catalysts with Dense Active Sites Deposited on A Porous Carbon Network for High Performance in PEMFC
In this study, iron-nitrogen-carbon (Fe-N-C) single-atom catalysts are promising sustainable alternatives to the costly and scarce platinum (Pt) to catalyze the oxygen reduction reactions (ORR) at the cathode of proton exchange membrane fuel cells (PEMFCs). However, Fe-N-C cathodes for PEMFC are made thicker than Pt/C ones, in order to compensate for the lower intrinsic ORR activity and site density of Fe-N-C materials. The thick electrodes are bound with mass transport issues that limit their performance at high current densities, especially in H 2 /air PEMFCs. Practical Fe-N-C electrodes must combine high intrinsic ORR activity, high site density, and fast mass transport. Herein, it has achieved an improved combination of these properties with a Fe-N-C catalyst prepared via a two-step synthesis approach, constructing first a porous zinc-nitrogen-carbon (Zn-N-C) substrate, followed by transmetallating Zn by Fe via chemical vapor deposition. A cathode comprising this Fe-N-C catalyst has exhibited a maximum power density of 0.53 W cm -2 in H 2 /air PEMFC at 80 °C. The improved power density is associated with the hierarchical porosity of the Zn-N-C substrate of this work, which is achieved by epitaxial growth of ZIF-8 onto g-C 3 N 4 , leading to a micro-mesoporous substrate.
25 ENERGY STORAGE↗
Bypassing Formation of Oxide Intermediate via Chemical Vapor Deposition for the Synthesis of an Mn-N-C Catalyst with Improved ORR Activity
Not Available
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CH↗
Through the interface: New insights of the hydrogen evolution and oxidation reactions in aqueous solutions
Abstract Hydrogen evolution and oxidation reactions (HER/HOR) are the most fundamental reactions in electrocatalysis. Despite the practical significance, the mechanisms of HER/HOR in aqueous solutions are still elusive. Various theories have been proposed to rationalize the pH effect, cation effect, and structure effect of HER/HOR but none of them can explain all observations. In this review, we discuss four schools of thought for the HER/HOR, focusing on the strengths and shortcomings of each hypothesis and highlighting the magnitude of electrochemical interface structure in hydrogen electrocatalysis.
Liu, Ershuai↗
Periodic Assembly of Diblock Pt–Au Heteronanowires for the Methanol Oxidation Reaction
Not provided.
Chemistry↗
High-Efficiency Reversible Alkaline Membrane Fuel Cells
The proposed project will explore oxidation-resistant alkaline membrane/ionomers and corrosion-resistant bifunctional catalysts to enable reversible alkaline membrane fuel cells (AMFCs). The project will for the first time demonstrate a reversible AMFC with greater than 50% RTE at 1000 mA/cm 2 without introducing any salts or bases in the aqueous feed.
30 DIRECT ENERGY CONVERSION↗