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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

Coordination engineering was employed to optimize the coordination environment of the Zr atom anchored on the porphyrins (PP). Five promising ZrPP-A candidates as electrocatalysts for nitrogen reduction reaction (NRR) were identified…

材料科学 · 物理学 2023-12-11 Jianpeng Guo , Hao Luo , Qinfu Zhao , Bingbing Suo , Bo Zhou , Haiyan Zhu , Zhiyong Zhang , Qi Song

Photocatalytic nitrogen reduction is the promising way for ammonia production, the question now is that the search of highly active and low active catalysts. Based on the first-principles calculation, single boron atom is anchored on the…

材料科学 · 物理学 2019-10-21 Hao-Ran Zhu , Shi-Hao Wei , Da-Yin Hua

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…

材料科学 · 物理学 2023-07-14 Ashok Singh , Srimanta Pakhira

This study investigates the structural, electronic, and catalytic properties of pristine and doped C$_4$N$_2$ nanosheets as potential electrocatalysts for the hydrogen evolution reaction. The pristine C$_{36}$N$_{18}$ nanosheets exhibit…

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

The catalyst development for N2 electroreduction reaction (NRR) with low onset potential and high Faradaic efficiency is highly desired, but remains challenging. Machine learning (ML) recently emerged as a complementary tool to accelerate…

材料科学 · 物理学 2019-03-28 Myungjoon Kim , Byung Chul Yeo , Sang Soo Han , Donghun Kim

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…

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…

材料科学 · 物理学 2024-10-28 Radha N Somaiya , Muhammad Sajjad , Nirpendra Singh , Aftab Alam

The electrocatalytic CO2 reduction reaction (CO2RR) is a complex multi-proton-electron transfer process that generates a vast network of reaction intermediates. Accurate prediction of free energy changes (G) of these intermediates and…

化学物理 · 物理学 2025-04-23 Xuxin Kang , Wenjing Zhou , Ziyuan Li , Zhaoqin Chu , Hanqin Yin , Shan Gao , Aijun Du , Xiangmei Duan

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

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 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…

Zero-dimensional kinetic modeling of atmospheric pressure Ar-N2-H2 nonthermal plasma was carried out to gain mechanistic insights into ammonia formation during plasma-assisted catalysis of ammonia synthesis. The kinetic model was developed…

等离子体物理 · 物理学 2024-03-26 Zihan Lin , Shota Abe , Zhe Chen , Surabhi Jaiswal , Bruce E. Koel

Nitrogen doped graphene and carbon nanotubes are popularly in focus as metal-free electro-catalysts for oxygen reduction reactions (ORR) central to fuel-cells. N doped CNTs have been also reported to chemisorb mutually, promising a route to…

材料科学 · 物理学 2015-04-17 Joydeep Bhattacharjee

Active, selective and stable catalysts are imperative for sustainable energy conversion, and engineering materials with such properties are highly desired. High-entropy alloys (HEAs) offer a vast compositional space for tuning such…

The efficient and cost-effective conversion of nitro compounds to amines is crucial for industrial processes and environmental remediation, highlighting the growing demand for earth-abundant metal-based catalysts. In this study, magnetic…

化学物理 · 物理学 2025-12-24 Anjali Varshney , Ritesh Dubey , Sushil Kumar , Tapas Goswami , Samar Layek

Understanding and optimizing polysulfide adsorption and conversion processes are critical to mitigating shuttle effects and sluggish redox kinetics in lithium-sulfur batteries (LSBs). Here, we introduce a machine-learning-accelerated…

材料科学 · 物理学 2025-10-20 Sahil Kumar , Adithya Maurya K R , Mudit Dixit

The oxygen reduction reaction (ORR) via the 2-electron mechanism is an efficient way to produce hydrogen peroxide (H2O2) under mild conditions. This study examines the modification of Vulcan XC72 carbon with fluorine (F)-doped niobium oxide…

材料科学 · 物理学 2025-05-26 Aline B. Trench , João Paulo C. Moura , Caio Machado Fernandes , Mauro C. Santos

Bimetallic catalysts provide new routes toward sustainable ammonia synthesis, but the structural dynamics controlling their performance under real-world conditions remain poorly understood. Here, we combine in situ gas-cell and multimodal…