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Oi, Takao

Oi, Takao

Sophia University, Japan

2026 Rank: 310,295

Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:

Chemistry

SubField 1:

Energy

SubField 2:

Inorganic & Nuclear Chemistry

Rank in SubField 1: 5,457 out of 371,959 Researchers

Data For The Year: 2026
Metrics Self-Citations Excluded All
Rank Based on Composite Score310,295238,149
Total Cites1,6022,184
H-index2024
Hm-index1114
Number of Single Authored Papers66
Total Cites to Single Authored Papers138203
Number of Single+First Authored Papers5353
Total Cites to Single+First Authored Papers619832
Number of Single+First+Last Authored Papers108108
Total Cites to Single+First+Last Authored Papers1,0211,461
Composite Score33
Number of Distinct Citing Papers1,1271,286
Ratio of Total Citations to Distinct Citing Papers 1.42 1.70
Self-Citation Percentage
26.65%
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Oi, Takao

Oi, Takao

Sophia University, Japan

2025 Rank: 290,275

Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:

Chemistry

SubField 1:

Energy

SubField 2:

Inorganic & Nuclear Chemistry

Rank in SubField 1: 4,787 out of 343,394 Researchers

Data For The Year: 2025
Metrics Self-Citations Excluded All
Rank Based on Composite Score290,275228,726
Total Cites1,5262,098
H-index2023
Hm-index1114
Number of Single Authored Papers66
Total Cites to Single Authored Papers136201
Number of Single+First Authored Papers5353
Total Cites to Single+First Authored Papers600813
Number of Single+First+Last Authored Papers108108
Total Cites to Single+First+Last Authored Papers9791,418
Composite Score33
Number of Distinct Citing Papers1,0711,227
Ratio of Total Citations to Distinct Citing Papers 1.42 1.71
Self-Citation Percentage
27.26%
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Oi, Takao

Oi, Takao

Sophia University, Japan

2024 Rank: 288,617

Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:

Chemistry

SubField 1:

Energy

SubField 2:

Inorganic & Nuclear Chemistry

Rank in SubField 1: 4,514 out of 313,936 Researchers

Data For The Year: 2024
Metrics Self-Citations Excluded All
Rank Based on Composite Score288,617227,894
Total Cites1,4611,999
H-index1922
Hm-index1013
Number of Single Authored Papers66
Total Cites to Single Authored Papers134191
Number of Single+First Authored Papers5151
Total Cites to Single+First Authored Papers575773
Number of Single+First+Last Authored Papers104104
Total Cites to Single+First+Last Authored Papers9331,345
Composite Score33
Number of Distinct Citing Papers1,0171,164
Ratio of Total Citations to Distinct Citing Papers 1.44 1.72
Self-Citation Percentage
26.91%
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Oi, Takao

Oi, Takao

Sophia University, Japan

2023 Rank: 268,483

Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:

Chemistry

SubField 1:

Energy

SubField 2:

Inorganic & Nuclear Chemistry

Rank in SubField 1: 3,918 out of 287,766 Researchers

Data For The Year: 2023
Metrics Self-Citations Excluded All
Rank Based on Composite Score268,483209,225
Total Cites1,4581,988
H-index1922
Hm-index1114
Number of Single Authored Papers66
Total Cites to Single Authored Papers127184
Number of Single+First Authored Papers5555
Total Cites to Single+First Authored Papers574777
Number of Single+First+Last Authored Papers108108
Total Cites to Single+First+Last Authored Papers9251,323
Composite Score33
Number of Distinct Citing Papers1,0131,146
Ratio of Total Citations to Distinct Citing Papers 1.44 1.73
Self-Citation Percentage
26.66%
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Oi, Takao

Oi, Takao

Sophia University, Japan

2022 Rank: 254,770

Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:

Chemistry

SubField 1:

Energy

SubField 2:

Inorganic & Nuclear Chemistry

Rank in SubField 1: 3,523 out of 265,592 Researchers

Data For The Year: 2022
Metrics Self-Citations Excluded All
Rank Based on Composite Score254,770201,668
Total Cites1,3671,891
H-index1922
Hm-index1013
Number of Single Authored Papers66
Total Cites to Single Authored Papers122179
Number of Single+First Authored Papers5555
Total Cites to Single+First Authored Papers547750
Number of Single+First+Last Authored Papers107107
Total Cites to Single+First+Last Authored Papers8701,267
Composite Score33
Number of Distinct Citing Papers9431,071
Ratio of Total Citations to Distinct Citing Papers 1.45 1.77
Self-Citation Percentage
27.71%
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Oi, Takao

Oi, Takao

Sophia University, Japan

2021 Rank: 245,514

Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:

Chemistry

SubField 1:

Energy

SubField 2:

Inorganic & Nuclear Chemistry

Rank in SubField 1: 3,223 out of 229,150 Researchers

Data For The Year: 2021
Metrics Self-Citations Excluded All
Rank Based on Composite Score245,514197,071
Total Cites1,3231,843
H-index1921
Hm-index1013
Number of Single Authored Papers66
Total Cites to Single Authored Papers116173
Number of Single+First Authored Papers5858
Total Cites to Single+First Authored Papers535737
Number of Single+First+Last Authored Papers114114
Total Cites to Single+First+Last Authored Papers8471,242
Composite Score33
Number of Distinct Citing Papers9161,045
Ratio of Total Citations to Distinct Citing Papers 1.44 1.76
Self-Citation Percentage
28.21%
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Oi, Takao

Oi, Takao

Sophia University, Japan

2020 Rank: 239,303

Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:

Enabling & Strategic Technologies

SubField 1:

Energy

SubField 2:

Inorganic & Nuclear Chemistry

Rank in SubField 1: 2,999 out of 186,014 Researchers

Data For The Year: 2020
Metrics Self-Citations Excluded All
Rank Based on Composite Score239,303177,641
Total Cites1,2271,758
H-index1821
Hm-index1013
Number of Single Authored Papers66
Total Cites to Single Authored Papers108163
Number of Single+First Authored Papers5858
Total Cites to Single+First Authored Papers516715
Number of Single+First+Last Authored Papers112112
Total Cites to Single+First+Last Authored Papers7861,193
Composite Score33
Number of Distinct Citing Papers840979
Ratio of Total Citations to Distinct Citing Papers 1.46 1.80
Self-Citation Percentage
30.20%
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