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Prediction of solid-aqueous equilibria: Scheme to combine first-principles calculations of solids with experimental aqueous states

机译:固水平衡的预测:将固体的第一性原理计算与实验水态相结合的方案

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摘要

We present an efficient scheme for combining ab initio calculated solid states with experimental aqueous states through a framework of consistent reference energies. Our work enables accurate prediction of phase stability and dissolution in equilibrium with water, which has many important application areas. We formally outline the thermodynamic principles of the scheme and show examples of successful applications of the proposed framework on (1) the evaluation of the water-splitting photocatalyst material Ta_3N_5 for aqueous stability, (2) the stability of small nanoparticle Pt in acid water, and (3) the prediction of particle morphology and facet stabilization of olivine LiFePO_4 as a function of aqueous conditions.
机译:我们提出了一个有效的方案,通过一致的参考能量的框架,从头算出的固态与实验水态相结合。我们的工作可以准确预测相稳定性和与水的平衡溶解状态,水具有许多重要的应用领域。我们正式概述了该方案的热力学原理,并展示了所提出框架在以下方面的成功应用实例:(1)评估水分解光催化剂材料Ta_3N_5的水稳定性,(2)小纳米粒子Pt在酸性水中的稳定性, (3)预测橄榄石型LiFePO_4的颗粒形态和小平面稳定性随水性条件的变化。

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