Academic literature on the topic 'Complex Reaction Mechanism - Chemical Hydorgen Storage'

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Journal articles on the topic "Complex Reaction Mechanism - Chemical Hydorgen Storage"

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Wu, Haoyang, Kaixuan Chen, Xiaochun Xue, and Yonggang Yu. "Numerical Study on the Combustion of NEPE Sandwich Propellant in Depressurization Environment." Journal of Physics: Conference Series 3004, no. 1 (2025): 012098. https://doi.org/10.1088/1742-6596/3004/1/012098.

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Abstract In this paper, a two-dimensional sandwich model is proposed to simulate the combustion characteristics and combustion instability mechanism of NEPE propellant in depressurization environment. In order to explain the combustion process of the propellant, a complex kinetic reaction mechanism is introduced. The interaction between the condensed phase and gas phase is treated by using the source term method. The final results show that the dominant factor controlling the reaction during the depressurization process changes from diffusion mixing to chemical reaction, with a concomitant red
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El Hosry, Leina, Vanessa Elias, Vanessa Chamoun, et al. "Maillard Reaction: Mechanism, Influencing Parameters, Advantages, Disadvantages, and Food Industrial Applications: A Review." Foods 14, no. 11 (2025): 1881. https://doi.org/10.3390/foods14111881.

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The Maillard reaction is a complex chemical reaction that occurs between nucleophilic groups, such as thiolates or amino groups primarily from amino acids, peptides, proteins, and carbonyl groups, particularly from reducing sugars. The pH value of the medium is a key parameter controlling the kinetics of the Maillard reaction, as it influences the concentration of nucleophilic groups. Other specific conditions of reaction medium such as temperature, reaction time (or residence time in a process), and water activity also significantly influence the Maillard reaction. Understanding the impact of
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Brünle, Steffen, Martin L. Eisinger, Juliane Poppe, et al. "Molybdate pumping into the molybdenum storage protein via an ATP-powered piercing mechanism." Proceedings of the National Academy of Sciences 116, no. 52 (2019): 26497–504. http://dx.doi.org/10.1073/pnas.1913031116.

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The molybdenum storage protein (MoSto) deposits large amounts of molybdenum as polyoxomolybdate clusters in a heterohexameric (αβ)3cage-like protein complex under ATP consumption. Here, we suggest a unique mechanism for the ATP-powered molybdate pumping process based on X-ray crystallography, cryoelectron microscopy, hydrogen-deuterium exchange mass spectrometry, and mutational studies of MoSto fromAzotobacter vinelandii. First, we show that molybdate, ATP, and Mg2+consecutively bind into the open ATP-binding groove of the β-subunit, which thereafter becomes tightly locked by fixing the previo
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Hongxia, Wang, H. L. Zhang Kelvin, P. Hofmann Jan, A. de la Peña O'Shea Victor, and E. Oropeza Freddy. "The electronic structure of transition metal oxides for oxygen evolution reaction." Journal of Materials Chemistry A 9, no. 2021 (2021): 19465. https://doi.org/10.5281/zenodo.7692408.

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Electrolysis of water to produce hydrogen and oxygen is a promising pathway for the storage of renewable energy in form of chemical fuels. The efficiency of the overall process is usually limited by the sluggish kinetics of the oxygen evolution reaction (OER) due to a complex four-electron/proton transfer mechanism. Therefore, the most crucial step for water electrolysis to become a widespread industrial process is to develop efficient electrocatalysts capable of driving the OER at a low overpotential. In this article, we present a review of the recent understanding of low-cost transition meta
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Kankanallu, Varun, Xiaoyin Zheng, Denis Leshchev, et al. "Elucidating a Dissolution-Deposition Reaction Mechanism By Multimodal Synchrotron X-Ray Characterization in Aqueous Zn/MnO2 Batteries." ECS Meeting Abstracts MA2025-01, no. 1 (2025): 77. https://doi.org/10.1149/ma2025-01177mtgabs.

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Aqueous Zn/MnO2 batteries with their environmental sustainability and competitive cost, are becoming a promising, safe alternative for grid-scale electrochemical energy storage. Presented as a promising design principle to deliver higher theoretical capacity, this presentation will discuss the fundamental understanding of the dissolution-deposition mechanism of Zn/β-MnO2. A multimodal synchrotron characterization approach including three operando X-ray techniques (powder diffraction, absorption spectroscopy, and fluorescence microscopy) is coupled with elementally resolved synchrotron X-ray na
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Liu, Qiang, Jialong Li, Bing Liang, Weiji Sun, Jianjun Liu, and Yun Lei. "Microscopic Flow of CO2 in Complex Pore Structures: A Recent 10-Year Review." Sustainability 15, no. 17 (2023): 12959. http://dx.doi.org/10.3390/su151712959.

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To prevent CO2 leakage and ensure the safety of long-term CO2 storage, it is essential to investigate the flow mechanism of CO2 in complex pore structures at the pore scale. This study focused on reviewing the experimental, theoretical, and numerical simulation studies on the microscopic flow of CO2 in complex pore structures during the last decade. For example, advanced imaging techniques, such as X-ray computed tomography (CT) and nuclear magnetic resonance (NMR), have been used to reconstruct the complex pore structures of rocks. Mathematical methods, such as Darcy’s law, the Young–Laplace
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Song, Zihui, Wanyuan Jiang, Xigao Jian, and Fangyuan Hu. "Advanced Nanostructured Materials for Electrocatalysis in Lithium–Sulfur Batteries." Nanomaterials 12, no. 23 (2022): 4341. http://dx.doi.org/10.3390/nano12234341.

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Lithium–sulfur (Li-S) batteries are considered as among the most promising electrochemical energy storage devices due to their high theoretical energy density and low cost. However, the inherently complex electrochemical mechanism in Li-S batteries leads to problems such as slow internal reaction kinetics and a severe shuttle effect, which seriously affect the practical application of batteries. Therefore, accelerating the internal electrochemical reactions of Li-S batteries is the key to realize their large-scale applications. This article reviews significant efforts to address the above prob
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Kim, Hansol, Chenglin Cui, Yelim Kwon, Jungho Lee, and JI Man Kim. "Monitoring of Energy Storage Mechanism of Zn/Meso-MnO2 Battery System Using X-Ray Absorption Fine Structure." ECS Meeting Abstracts MA2023-02, no. 4 (2023): 749. http://dx.doi.org/10.1149/ma2023-024749mtgabs.

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As energy storage systems, LIBs, which are most frequently used, have excellent capacity, power, and long lifespan performance [1]. However, as the reserves of the raw minerals used—lithium and cobalt—are exhausted, prices are escalating. A further issue with LIB is that it heats up to a high temperature during charging, which leads to a string of fire or explosion catastrophes. To solve these safety or cost challenges, various next-generation batteries are being developed, and we are exploring about aqueous zinc ion battery (AZIB), which attracting attention as the next-generation battery due
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Anderson, Grace C., Douglas Kushner, Alexis T. Bell, and Adam Z. Weber. "Impact of Proton Activity in PFSA Membranes on Electrochemical Kinetics Using Microelectrodes." ECS Meeting Abstracts MA2022-02, no. 42 (2022): 1537. http://dx.doi.org/10.1149/ma2022-02421537mtgabs.

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Polymer-electrolyte fuel cells and electrolyzers (PEFC&Es) have the potential to play a prominent role in green energy technologies including transportation, chemical manufacturing, and grid-scale energy storage. PEFC&Es have made significant advancements in recent years, largely due to improvements in the catalyst layers, and especially at the ionomer/catalyst interface. However, it is not yet definitively known how this solid-state environment impacts electrochemical kinetics, especially under various operating conditions (e.g., temperature, humidity, etc.). Additionally, it is chall
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Kim, Haegyum, and Young-Woon Byeon. "Understanding Ion-Exchange Reaction Mechanisms in Layered Oxide Cathodes for Beyond Li-Ion Batteries." ECS Meeting Abstracts MA2022-02, no. 4 (2022): 452. http://dx.doi.org/10.1149/ma2022-024452mtgabs.

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Ion-exchange reactions are frequently used to develop novel metastable electrode materials for alkali-ion batteries that cannot be synthesized using direct chemical reactions. In fact, the ion-exchange reaction has been proven as an effective approach to develop novel transition metal oxide cathodes for lithium, sodium, and potassium ion batteries.[1-4] However, the solid-state ion-exchange mechanism and the resulting phase evolution are barely understood. In this work, we investigated the electrochemical ‘K-to-Na’ and ‘Na-to-K’ ion-exchange reaction mechanisms in layered oxide cathodes as it
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Dissertations / Theses on the topic "Complex Reaction Mechanism - Chemical Hydorgen Storage"

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Banu, Tahamida. "THEORETICAL AND COMPUTATIONAL STUDIES OF HYDROGEN STORAGE MATERIALS." Thesis, 2019. http://hdl.handle.net/10821/8282.

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The thesis sheds light into electronic structure, complex reaction mechanism, kinetics, and thermochemistry of molecules involved in chemical hydrogen storage as well as in the modeling of various modified organic linkers to design improved metal organic frameworks (MOFs) using high-level theoretical methods. A general introduction about the ‘hydrogen storage' is given in the first chapter to provide a preliminary idea about the hydrogen storage materials. The second chapter briefly describes the computational chemistry and provides a review of theoretical methods. The remaining chapters of th
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