Article
Engineering, Environmental
Le Chai, Shuling Liu, Shaotong Pei, Chao Wang
Summary: This paper presents a series of cobalt-nickel phosphide films electrodeposited on nickel foam substrates, exhibiting good catalytic activity in alkaline solutions for both the hydrogen evolution reaction and water oxidation reaction. The electrodes show low overpotentials and steep Tafel slopes, with potential applications in electrolyzing water for hydrogen production.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Inorganic & Nuclear
Hafiza Tauseef Ashfaq, Muhammad Adeel Asghar, Talha Nisar, Veit Wagner, Muhammad Adil Mansoor, Ali Haider, Saqib Ali
Summary: In this study, binder-free electrodeposition was used to synthesize Co-, Ni-, and trimetallic NiCo-hexacyanocobaltates as electrocatalysts on fluorine-doped tin oxide (FTO) substrates. The synthesized materials were characterized using various analytical techniques including FTIR spectroscopy, XRD analysis, SEM, EDX analysis, and XPS. The catalytic performance of the synthesized materials for the oxidation of water was evaluated in 1 M KOH, and the results showed that the trimetallic NiCo-hexacyanocobaltate exhibited good electrocatalytic activity.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
S. Hong, H. Kim, J. Kim, S. Y. Kim, S. H. Ahn
Summary: This study reports a facile method for the fabrication of Pt-decorated Au dendrite anodes for direct formic acid fuel cells (DFAFCs). The fabricated Pt@Au-D/CP anode exhibits high current density and maximum power density, demonstrating superior mass activity.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Engineering, Chemical
Xianhu Long, Rongfu Huang, Yajing Li, Jiahao Wang, Mingzhi Zhang, Igor Ying Zhang
Summary: In this study, the activation of peroxymonosulfate (PMS) via electro-cocatalytic system with circulated Fe(III)/Fe(II) was investigated using boron-doped diamond (BDD) anode and dimensionally stable anode (DSA) for the degradation of sulfamethoxazole (SMX). The results showed the presence of radicals and non-radicals in both BDD/PMS/Fe(III) and DSA/PMS/Fe(III) systems. The degradation efficiency of BDD/PMS/Fe(III) was affected by co-existing ions, while DSA/PMS/Fe(III) process was less affected. The study also compared the oxidation mechanisms and primary oxidation pathways of the BDD and DSA systems.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Physical
Seiti I. Venturini, Denis R. Martins R. de Godoi, Joelma Perez
Summary: This study investigates the ammonia oxidation reaction (AOR) over platinum surfaces using an unprecedented experimental approach. By combining online electrochemical mass spectrometry (OLEMS) and ion chromatography (IC), the researchers were able to detect multiple AOR products and demonstrate the variation in AOR selectivity depending on surface conditions. They identified the major and minor products, proposed AOR mechanistic pathways, and opened up possibilities for the electrochemical generation of nitrogenated products.
Article
Chemistry, Multidisciplinary
Itamar Liberman, Raya Ifraemov, Ran Shimoni, Idan Hod
Summary: Metal-organic frameworks (MOFs) have great potential as catalytic materials in electrochemical energy conversion reactions. This study used scanning electrochemical microscopy (SECM) to perform localized electrosynthesis of MOFs and analyze their catalytic hydrogen evolution reaction activity. The results shed light on the operation principles of electroactive MOFs and their potential use in alternative fuel production schemes.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Electrochemistry
Tianyu Li
Summary: PCBs, as chemically resistant hard substrates with surface-mounted metal pads, have the potential to be utilized as substrates for electrochemical applications with customized electrode pads and wiring layers. This study presents a method to develop PCBs into electrochemical substrates for alcohol electrocatalysis and internal reference electrodes.
ELECTROCHEMISTRY COMMUNICATIONS
(2021)
Article
Electrochemistry
Jinchang Xu, Zhenyou Wang
Summary: The Electrochemical Ethanol Oxidation Reaction (EOR) is crucial in energy conversion devices. In situ Raman spectroscopy is an invaluable tool for identifying intermediates and inferring the reaction mechanism, making it one of the most suitable methods for studying EOR.
Article
Chemistry, Physical
Xingxing Zhai, Yingsong Yu, Yi Hu
Summary: This study successfully manufactured aqueous Zn-MnO2 microbatteries with high volumetric energy density, areal specific capacity, and excellent cycling stability by adding Mn2+ to the electrolyte and using a laser direct writing technique. The addition of Mn2+ inhibits the dissolution of the cathode material and promotes the electrodeposition reaction conversion process, improving the capacity and cycling stability of the batteries.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Hossein Faraji, Khadijeh Hemmati, Kavoos Mirabbaszadeh
Summary: This study develops a high-performance electrode for Hydrogen Evolution Reaction (HER) through the rational design of non-noble metal-based electrocatalysts. The electrode exhibits a stable structure, high hydrogen evolution efficiency, excellent stability, and negligible activity decrease in alkaline media. The synergistic effect between Ni and Fe atoms, high density of active sites on nanosheets, and effective electron transport contribute to its superior HER catalytic performance. This work provides a promising route for the design and fabrication of cost-effective and highly efficient HER electrocatalysts.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Multidisciplinary Sciences
Graham Smith, Edmund J. F. Dickinson
Summary: The authors present a metrology-led perspective on the best practices for electrochemical characterization of materials used in electrochemical energy technologies. These experiments are highly sensitive and the quality of their results is often uncertain and difficult to reproduce quantitatively.
NATURE COMMUNICATIONS
(2022)
Article
Electrochemistry
Kalli Sai Bhavani, Tummala Anusha, Pradeep Kumar Brahman
Summary: The study presents a facile method for fabricating the PdNPs@MnO2-PPy catalyst and its promising potential for application as an anode electrode in direct alcohol fuel cells, showing superior catalytic performance and stability.
ELECTROCHIMICA ACTA
(2021)
Article
Electrochemistry
Jinchang Xu, Zhenyou Wang
Summary: The Electrochemical Ethanol Oxidation Reaction (EOR) is crucial for next-generation energy conversion devices, but understanding its mechanism is challenging due to the involvement of numerous intermediates and pathways. In situ Raman spectroscopy has been proven invaluable in identifying these intermediates and inferring the reaction mechanism based on their signals and structural changes. This short review focuses on the fundamentals of EOR and recent advancements in understanding its mechanism using in situ Raman spectroscopy, with future applications in mind.
Article
Engineering, Chemical
Shaohua Yang, Feixiang Jiao, Yaqiong Gong
Summary: A novel crystalline/amorphous composite was successfully synthesized for oxygen evolution reaction, showing enhanced catalytic activity. By altering the material structure, the adsorption capacity of reactants is improved and the energy barrier is reduced, promoting catalytic activity.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Energy & Fuels
Zhongbao Feng, Tongtong Shi, Wentao Liu, Wanting Zhang, Han Zhang
Summary: The bifunctional (Ni,Co)(0.85)Se/rGO catalyst fabricated via electrodeposition shows superior electrocatalytic activity and stability towards hydrazine electrooxidation and oxygen evolution reaction. Its advantages include high electrochemical surface area, high electrical conductivity, and rapid release of bubbles from electrode surface. This study presents a versatile, cost-effective, and industrial strategy for producing highly active catalysts.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
