Unraveling the Stability of Layered Intercalation Compounds through First-Principles Calculations: Establishing a Linear Free Energy Relationship with Aqueous Ions

IF 3.7 Q2 CHEMISTRY, PHYSICAL ACS Physical Chemistry Au Pub Date : 2024-03-07 DOI:10.1021/acsphyschemau.3c00063
Naoto Kawaguchi*, Kiyou Shibata and Teruyasu Mizoguchi*, 
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Abstract

Layered intercalation compounds, where atoms or molecules (intercalants) are inserted into layered materials (hosts), hold great potential for diverse applications. However, the lack of a systematic understanding of stable host–intercalant combinations poses challenges in materials design due to the vast combinatorial space. In this study, we performed first-principles calculations on 9024 compounds, unveiling a novel linear regression equation based on the principle of hard and soft acids and bases. This equation, incorporating the intercalant ion formation energy and ionic radius, quantitatively reveals the stability factors. Additionally, employing machine learning, we predicted regression coefficients from host properties, offering a comprehensive understanding and a predictive model for estimating the intercalation energy. Our work provides valuable insights into the energetics of layered intercalation compounds, facilitating targeted materials design.

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通过第一性原理计算揭示层状互锁化合物的稳定性:建立与水离子的线性自由能关系
层状插层化合物是将原子或分子(插层物)插入层状材料(宿主)中的化合物,在各种应用领域具有巨大的潜力。然而,由于缺乏对稳定的宿主-插层剂组合的系统了解,巨大的组合空间给材料设计带来了挑战。在本研究中,我们对 9024 种化合物进行了第一性原理计算,揭示了基于软硬酸碱原理的新型线性回归方程。该方程结合了夹杂离子形成能和离子半径,定量揭示了稳定性因素。此外,通过机器学习,我们还根据宿主特性预测了回归系数,为估算插层能量提供了全面的理解和预测模型。我们的工作为层状插层化合物的能量学提供了宝贵的见解,有助于进行有针对性的材料设计。
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3.70
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期刊介绍: ACS Physical Chemistry Au is an open access journal which publishes original fundamental and applied research on all aspects of physical chemistry. The journal publishes new and original experimental computational and theoretical research of interest to physical chemists biophysical chemists chemical physicists physicists material scientists and engineers. An essential criterion for acceptance is that the manuscript provides new physical insight or develops new tools and methods of general interest. Some major topical areas include:Molecules Clusters and Aerosols; Biophysics Biomaterials Liquids and Soft Matter; Energy Materials and Catalysis
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