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r2SCAN+rVV10+U 对热化学3D过渡金属硫化物进行参数化

Brian Donovan¹, Alan West¹, Alexander Urban¹

¹Department of Chemical Engineering, Columbia University, New York, New York 10027, USA.

The Journal of chemical physics

|July 16, 2025

概括

使用r2SCAN的密度函数理论准确地预测过渡金属硫化物. 纠正自我相互作用错误可以改进相位图,帮助储能和催化材料设计.

科学领域:

材料科学材料科学材料科学
计算化学计算化学
固态物理固态物理

背景情况:

过渡金属硫化物对于储能,催化和金至关重要.
准确的计算建模对于设计具有所需性质的新材料至关重要.

研究的目的:

为了评估密度函数理论 (DFT) 的预测准确度,使用r2SCAN函数用于过渡金属硫化物的热化学性质.
通过解决r2SCAN函数固有的自我交互错误来提高DFT预测的准确性.

主要方法:

使用r2SCAN函数应用DFT来建模过渡金属硫化物的热化学性质.
在22个过渡金属硫化物系统中系统参数化哈巴德U校正 (r2SCAN+U).
与实验数据比较预测的相位图和形成能量.

主要成果:

r2SCAN+U方法显著改善了形成能量的预测,将根平均平方误差降低了约70%.
r2SCAN+U准确地预测了二进制和三进制相位图和普尔贝克斯图,显示了与实验引用的良好一致.
经过纠正的方法捕获了未经纠正的r2SCAN函数遗漏的相稳定性趋势.

结论:

使用r2SCAN的DFT,特别是使用Hubbard U参数化纠正自我相互作用错误时,为建模过渡金属硫化物提供了可靠和计算效率高的框架.
这种改进的建模能力对于先进的储能材料,电催化剂和可持续的金工艺的合理设计具有广泛的适用性.

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