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The large bandgap and strong covalent bonds of hexagonal boron nitride (hBN) had long been thought to be chemically inert. Due to its inertness with saturated robust covalent bonds, the pristine 2D monolayer hBN cannot be functionalized for…

材料科学 · 物理学 2024-04-22 Lokesh Yadav , Srimanta Pakhira

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…

The conversion of waste carbon dioxide (CO2) gas into valuable products and fuels through an electrocatalytic CO2 reduction reaction (CO2RR) is a promising approach. The sluggish kinetics of the CO2RR require the development of novel…

材料科学 · 物理学 2024-04-16 Lokesh Yadav , Srimanta Pakhira

Boron-doped graphene was reported to be the best non-metal doped graphene electrocatalyst for the oxygen reduction reaction (ORR) working at an onset potential of 0.035 V [JACS 136 (2014) 4394]. In the present DFT study, intermediates and…

材料科学 · 物理学 2016-07-28 Gianluca Fazio , Lara Ferrighi , Cristiana Di Valentin

We report here results of our density functional theory based computational studies of the electronic structure of the Pd-Co alloy electrocatalysts and energetics of the oxygen reduction reaction (ORR) on their surfaces. The calculations…

材料科学 · 物理学 2015-05-28 Sebastian Zuluaga , Sergey Stolbov

Exploring and developing low-cost, high-performance, and stable catalysts for the oxygen reduction reaction (ORR) is of great importance, though progress is ongoing. In this work, a simple evaporation-pyrolysis method is employed to…

材料科学 · 物理学 2024-10-11 Yuqin Wang , Lizi He , Ning Han

Precious-metal-free spinel oxide electrocatalysts are promising candidates for catalyzing the oxygen reduction reaction (ORR) in alkaline fuel cells. In this theory-driven study, we use joint density-functional theory in tandem with…

Accelerating the oxygen reduction reaction (ORR) is a main subject of electrocatalysis research.A critical step of ORR is the formation of the hydroperoxyl functional group (OOH*) intermediate. In this study, we investigate the influence of…

TMDs are a new family of 2D materials with features that make them appealing for potential applications in nanomaterials science and engineering. Although, the edges of the 2D TMDs show excellent electrocatalytic performance, their basal…

材料科学 · 物理学 2022-09-20 Shrish Nath Upadhyay , Srimanta Pakhira

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…

应用物理 · 物理学 2018-02-07 Wenhan Niu , Srimanta Pakhira , Kyle Marcus , Zhao Li , Jose L. Mendoza-Cortes , Yang Yang

The use of the oxygen reduction reaction (ORR) for in-situ production of H$_2$O$_2$ is an attractive alternative to replace the methods based on anthraquinone oxidation. This study investigates the modification of Vulcan XC72 carbon with…

Two-dimensional (2D) metal-diboride ZrB2 monolayers was predicted theoretically as a stable new electronic material [A. Lopez-Bezanilla, Phys. Rev. Mater., 2018, 2, 011002 (R)]. Here, we investigate its electronic transport properties along…

介观与纳米尺度物理 · 物理学 2018-12-27 Yipeng An , Jutao Jiao , Yusheng Hou , Hui Wang , Ruqian Wu , Chengyan Liu , Xuenian Chen , Tianxing Wang , Kun Wang

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,…

材料科学 · 物理学 2025-09-23 Md. Mostaqul Islam , Ahmed Zubair

We report here on a novel and facile techniques for the synthesis nanocomposite based on stable bimetallic catalyst containing iridium and gold nanoparticles electrodeposited on chemically reduced graphene oxide (rGO) sheet admixed with…

Electrocatalysts of nitrogen reduction reaction (NRR) have attracted ever-growing attention due to its application for renewable energy alternative to fossil fuels. However, activation of inert N-N bond requires multiple complex charge…

材料科学 · 物理学 2022-04-20 Zheng Shu , Hejin Yan , Hongfei Chen , Yongqing Cai

The kinetics of the oxygen reduction reaction (ORR) on the practical air cathode in a Lithium air cell, which is conventionally composed of porous carbon with or without catalysts supported on it, was investigated. The mechanism and…

Electrochemical energy and substance conversion devices involve complex electrode processes, characterized by multiple charge transfer steps, competing pathways, and various intermediates. Such complexity makes it challenging to enhance…

The nitrogen reduction reaction (NRR), as an efficient and green pathway for ammonia synthesis, plays a crucial role in achieving on-demand ammonia production. This study proposes a novel design concept based on dual-iron atomic sites and…

材料科学 · 物理学 2025-03-06 Zhe Zhang , Wenxin Ma , Jiajie Qiao , Xiaoliang Wu , Shaowen Yu , Weiye Hou , Xiang Huang , Rubin Huo , Hongbo Wu , Yusong Tu

Active sites and catalytic mechanism of nitrogen-doped graphene in oxygen reduction reaction (ORR) have been extensively studied but are still inconclusive, partly due to the lack of an experimental method that can detect the active sites.…

介观与纳米尺度物理 · 物理学 2014-10-29 Tan Xing , Yao Zheng , Lu Hua Li , Bruce C. C. Cowie , Daniel Gunzelmann , Shi Zhang Qiao , Shaoming Huang , Ying Chen

A comprehensive understanding of the electrode-electrolyte interface in energy conversion systems remains challenging due to the complex and multifaceted nature of interfacial processes. This complexity hinders the development of more…

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