中国科学技术大学学报 ›› 2020, Vol. 50 ›› Issue (6): 844-851.DOI: 10.3969/j.issn.0253-2778.2020.06.018

• 论著 • 上一篇    下一篇

基于人工智能的描述符预测合金催化材料形成能

李健聪,王泰然,舒武,胡素磊,欧阳润海,李微雪   

  1. 1.中国科学技术大学合肥微尺度物质科学国家研究中心,安徽合肥 230026; 2.中国科学技术大学化学与材料科学学院化学物理系,安徽合肥 230026; 3.上海大学材料基因组工程研究院,上海 200444
  • 收稿日期:2020-03-27 修回日期:2020-05-18 接受日期:2020-05-18 出版日期:2020-06-30 发布日期:2020-05-18
  • 通讯作者: 李微雪
  • 作者简介:李健聪,男,1995年生,硕士生. 研究方向:量子计算化学. E-mail: jcli@mail.ustc.edu.cn
  • 基金资助:
    科技部重点研发计划(2018YFA0208603),中国科学院前沿重点项目(QYZDJ-SSW-SLH054),国家自然科学基金重点项目(91645202, 91945302)资助.

AI-based descriptor for predicting alloy formation energy

LI Jiancong, WANG Tairan, SHU Wu, HU Sulei, OUYANG Runhai, LI Weixue   

  1. 1. Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China; 2. Department of Chemical Physics, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China; 3. Materials Genome Institute, Shanghai University, Shanghai 200444, China
  • Received:2020-03-27 Revised:2020-05-18 Accepted:2020-05-18 Online:2020-06-30 Published:2020-05-18

摘要: 合金材料因其丰富可调的几何结构和电子性质,在催化和材料科学领域得到了广泛的应用.其中合金形成能作为一个重要的物理量,对合金材料的形成和催化活性有重要影响.近年来,随着人工智能和数据库的发展,利用机器学习的方法研究和设计新的材料成为新的研究焦点.基于此,通过人工智能的多任务压缩感知算法,结合AB2合金形成能数据库展开了合金形成能描述符和预测研究. 首先建立了相应合金形成能的通用描述符,并展开了特征敏感性分析,揭示出合金材料组分的电子性质和几何性质的影响及其相互依赖关系.研究结果显示,该描述符的预测误差低于8.10 kJ·mol-1,具有清晰的物理可阐述性,并预测了大量未知合金材料的形成能.

关键词: 合金形成能, 数据库, 机器学习, 描述符, 敏感性分析

Abstract: Because of their rich geometric structure and electronic properties, metal alloys have been widely used in catalysis and materials science. Among them, alloys formation energy has an important influence on the formation and catalytic activity of metal alloys. With the development of artificial intelligence and databases in recent years, machine learning has been used to rationally design new materials. Based on the multi-task compressed sensing algotithm in artificial intelligence, the alloy formation energy descriptor of the AB2 alloy formation energy database was investigated. A universal descriptor of the corresponding alloy formation energy was established, and the sensitivity analysis of features revealed the importance of electronic and geometrical properties of metal alloys. The results show that this descriptor has a prediction error lower than 8.10kJ·mol-1 and a better physical interpretation. Finally, the formation energy of a large number of unknown metal alloys was predicted.

Key words: alloy formation energy, database, machine learning, descriptor, sensitivity analysis

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