Machine-learning-accelerated screening of hydrogen evolution catalysts in MBenes materials

被引:82
作者
Sun, Xiang [1 ]
Zheng, Jingnan [1 ]
Gao, Yijing [1 ]
Qiu, Chenglong [1 ]
Yan, Yilong [1 ]
Yao, Zihao [1 ]
Deng, Shengwei [1 ]
Wang, Jianguo [1 ]
机构
[1] Zhejiang Univ Technol, Inst Ind Catalysis, Coll Chem Engn, State Key Lab Breeding Base Green Chem Synth Tech, Hangzhou 310032, Peoples R China
基金
中国国家自然科学基金;
关键词
Machine learning; Hydrogen evolution reaction; Density functional theory; MBenes; Single atom dopant; Feature combination; DENSITY-FUNCTIONAL THEORY; MONOLAYER; 1T-MOS2; DESIGN; MXENES; ATOMS;
D O I
10.1016/j.apsusc.2020.146522
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Machine learning (ML) models combined with density functional theory (DFT) calculations are employed to screen and design hydrogen evolution reaction (HER) catalysts from various bare and single-atom doped MBenes materials. The values of Gibbs free energy of hydrogen adsorption (Delta G(H)*) are accurately predicted via support vector algorithm only by using simply structural and elemental features. With the analysis of combined descriptors and the feature importance, the Bader charge transfer of surface metal is a key factor to influence HER activity of MBenes. Co/Ni2B2, Pt/Ni2B2, Co2B2, Os/Co2B2 and Mn/Co2B2 are screened from 271 MBenes and MXenes as active catalysts, with the near-zero Delta G(H)* of 0.089, -0.082, -0.13, -0.087 and -0.044 eV, respectively. Finally, stable Co2B2 and Mn/Co2B2 are considered as the excellent HER catalysts due to vertical bar Delta G(H)*vertical bar < 0.15 eV over a wide range of hydrogen coverages (theta from 1/9 to 5/9). The present work suggests that ML models are competitive tools in accelerating the screening of efficient HER catalysts.
引用
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页数:10
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