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Zn-air battery (ZAB) has distinguished itself as new generation of energy storage device due to the high theoretical energy density and its performance relies on the oxygen reduction reaction (ORR) performance of the cathode catalysts.…

Applied Physics · Physics 2020-12-21 Kwun Nam Hui

In this report, the preparation of Fe-carbon nitride (CN)-based electrocatalysts (ECs) with a 'core-shell' morphology for the oxygen reduction reaction (ORR) is described. The ECs consist of spherical XC-72R carbon nanoparticles, the…

Electrocatalysts for the oxygen reduction reaction (ORR) based on complexes of iron and nitrogen in a carbon matrix (Fe-N-C) are a promising alternative to platinum group metal (PGM) based catalysts in polymer electrolyte membrane (PEM)…

Materials Science · Physics 2019-11-11 Yun Xu , Michael J. Dzara , Sadia Kabir , Svitlana Pylypenko , Kenneth Neyerlin , Andriy Zakutayev

Although hydrogen generation by water electrolysis is the cheapest of all other available sources, water splitting still occurs with sluggish kinetics. It is a challenging barrier for H2 production on a large scale. Moreover, research is…

Selective two-electron oxygen reduction reaction (ORR) offers a promising route for hydrogen peroxide synthesis, and defective sp2 carbon-based materials are attractive, low-cost electrocatalysts for this process. However, due to a wide…

This work reports the synthesis, the physicochemical characterization and the electrochemical studies of new electrocatalysts (ECs) for the oxygen reduction reaction (ORR) that: (i) are based on a hierarchical graphene-based support; and…

We report on the development of two new Pt-free electrocatalysts (ECs) for the oxygen reduction reaction (ORR) based on graphene nanoplatelets (GNPs). We designed the ECs with a core-shell morphology, where a GNP core support is covered by…

The oxygen reduction (ORR) and oxygen evolution reactions (OER) in Zn-air batteries (ZABs) require highly efficient, cost-effective and stable electrocatalysts as replacements to traditionally high cost, inconsistently stable and low poison…

Applied Physics · Physics 2018-02-07 Wenhan Niu , Srimanta Pakhira , Kyle Marcus , Zhao Li , Jose L. Mendoza-Cortes , Yang Yang

Single-atom catalysts (SACs) with metal-nitrogen-carbon (M-N-C) structures are widely recognized as promising candidates in oxygen reduction reactions (ORR). According to the classical Sabatier principle, optimal 3d metal catalysts, such as…

Chemical Physics · Physics 2026-04-21 Di Zhang , Fangxin She , Jiaxiang Chen , Li Wei , Hao Li

Electrochemical CO2 reduction reaction (CO2RR) using 2D nanomaterials has emerged as a sophisticated approach to mitigate industrial CO2 emissions. In this work, the potential application of pristine as well as strategically Fe, Co,…

Materials Science · Physics 2025-09-23 Md. Mostaqul Islam , Ahmed Zubair

Electrochemical CO2 reduction (CO2R) offers a promising approach to decarbonize chemical manufacturing through production of carbon-neutral fuels. However, insufficient performance and instability of membrane electrode assembly (MEA)…

Ammonia, a versatile compound that can be used as a fertilizer, chemical or fuel, has since long been produced through the energy-intensive Haber-Bosch process. Recently, the electrochemical nitrate reduction reaction (NO3RR) using…

A novel oxygen evolution reaction (OER) catalyst (3D S235-P steel) based on steel S235 substrate has been successfully prepared via a facile one-step surface modification. The standard Carbon Manganese steel was phosphorizated superficially…

The development of high-activity and low-price cathodic catalysts to facilitate the electrochemical sluggish O$_2$ reduction reaction (ORR) is very important to achieve the commercial application of fuel cells. Here, we have investigated…

Materials Science · Physics 2023-07-14 Ashok Singh , Srimanta Pakhira

Oxygen evolution reaction (OER) electrolysis, as an important reaction involved in water splitting and rechargeable metal-air battery, has attracted increasing attention for clean energy generation and efficient energy storage. Nickel/iron…

Materials Science · Physics 2014-11-19 Ming Gong , Hongjie Dai

Five bimetallic electrocatalysts (ECs) including a carbon nitride (CN) support are synthesised through the pyrolysis of a solid precursor obtained through sol-gel and gel-plastic processes. The resulting ECs are characterised through…

Chemical Physics · Physics 2018-05-23 Stefano Diodati , Enrico Negro , Keti Vezzu' Vito Di Noto , Silvia Gross

The synthesis of new 'Pt-free' electrocatalysts (ECs) for the oxygen reduction reaction (ORR) is reported. The ECs are characterized by a hierarchical 'core-shell' morphology; the 'core' is made of graphene, that is covered by a cratered,…

Developing efficient electrocatalysts for CO$_2$ reduction into value-added products is crucial for the green economy. Inspired by the recent synthesis of Biphenylene (BPH), we have systematically investigated pristine, defective, and…

Materials Science · Physics 2024-10-28 Radha N Somaiya , Muhammad Sajjad , Nirpendra Singh , Aftab Alam

Electrocatalytic CO2 reduction technology is key to mitigating greenhouse gas emissions and the energy crisis. However, controlling the selectivity of CO2RR products at low overpotential remains a challenge. In this paper, we predicted five…

Materials Science · Physics 2024-03-05 Ran Wang , Chaozheng He , Weixing Chen , Qingquan Kong , Thomas Frauenheimac

The current study illustrates the successful synthesis of Ce$_{1.0}$Mn$_{0.9}$Co$_{0.1}$ nanoparticles, characterized through XRD, EPR, magnetization curves, and TEM/HRTEM/EDX analyses. These nanoparticles were then loaded into the carbon…

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