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• W4312093756 abstract "Hydrogen is a promising alternative energy source due to its significantly high energy density. Also, hydrogen can be transformed into electricity in energy systems such as fuel cells. The transition toward hydrogen-consuming applications requires a hydrogen storage method that comes with pack hydrogen with high density. Among diverse methods, absorbing hydrogen on host metal is applicable at room temperature and pressure, which does not provide any safety concerns. In this regard, AB2 metal hydride with potentially high hydrogen density is selected as an appropriate host. Machine learning techniques have been applied to establish a relationship on the effect of the chemical composition of these hosts on hydrogen storage. For this purpose, a data bank of 314 data point pairs was used. In this assessment, the different A-site and B-site elements were used as the input variables, while the hydrogen absorption energy resulted in the output. A robust Gaussian process regression (GPR) approach with four kernel functions is proposed to predict the hydrogen absorption energy based on the inputs. All the GPR models' performance was quite excellent; notably, GPR with Exponential kernel function showed the highest preciseness with R2, MRE, MSE, RMSE, and STD of 0.969, 2.291%, 3.909, 2.501, and 1.878, respectively. Additionally, the sensitivity of analysis indicated that ZR, Ti, and Cr are the most demining elements in this system." @default.
• W4312093756 created "2023-01-04" @default.
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• W4312093756 date "2022-12-19" @default.
• W4312093756 modified "2023-10-14" @default.
• W4312093756 title "Estimating hydrogen absorption energy on different metal hydrides using Gaussian process regression approach" @default.
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• W4312093756 doi "https://doi.org/10.1038/s41598-022-26522-2" @default.
• W4312093756 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/36536023" @default.
• W4312093756 hasPublicationYear "2022" @default.
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