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Yasuhiro Umebayashi

Yasuhiro Umebayashi

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 51 14052 12648 1087 987 169 8488

Yasuhiro Umebayashi publications per year

The chart shows the history of publications by Yasuhiro Umebayashi between 1996 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Yasuhiro Umebayashi published across 30 years, from 1996 to 2025, averaging 5.9 papers a year. Output peaked at 12 publications in 2008. 10 of the 176 publications appeared in the last two years.

No. of publications
5 10
Bar chart. Horizontal axis: year, 1996 to 2025. Vertical axis: number of publications, 0 to 12. Peak 12 publications in 2008. 1996: 1 publication 1997: 4 publications 1998: 2 publications 1999: 1 publication 2000: 2 publications 2001: 4 publications 2002: 3 publications 2003: 2 publications 2004: 3 publications 2005: 8 publications 2006: 7 publications 2007: 10 publications 2008: 12 publications 2009: 8 publications 2010: 8 publications 2011: 4 publications 2012: 11 publications 2013: 7 publications 2014: 5 publications 2015: 10 publications 2016: 9 publications 2017: 7 publications 2018: 4 publications 2019: 9 publications 2020: 7 publications 2021: 4 publications 2022: 5 publications 2023: 9 publications 2024: 5 publications 2025: 5 publications
1996 2025

176 publications in total across all disciplines

View publications per year as a table
Yasuhiro Umebayashi: publications per year, 1996 to 2025
Year Publications
1996 1
1997 4
1998 2
1999 1
2000 2
2001 4
2002 3
2003 2
2004 3
2005 8
2006 7
2007 10
2008 12
2009 8
2010 8
2011 4
2012 11
2013 7
2014 5
2015 10
2016 9
2017 7
2018 4
2019 9
2020 7
2021 4
2022 5
2023 9
2024 5
2025 5
Total 176
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Yasuhiro Umebayashi publication distribution in Chemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Chemistry in 2026. The highlighted bar marks where Yasuhiro Umebayashi sits on this spectrum.

No. of scientists
250 500 750 1,000 1,250
Bar chart with 63 bars. Horizontal axis: publications, 61–80 to 1,295+. Vertical axis: number of scientists, 0 to 1,350. Most scientists, 1,350, have 161–180 publications. The last bar groups every scientist with 1,295 publications or more. The highlighted bar, 161–180 publications, is where this scientist sits. 61–80 publications: 66 scientists 81–100 publications: 302 scientists 101–120 publications: 623 scientists 121–140 publications: 918 scientists 141–160 publications: 1,218 scientists 161–180 publications: 1,350 scientists 181–200 publications: 1,344 scientists 201–220 publications: 1,281 scientists 221–240 publications: 1,216 scientists 241–260 publications: 1,100 scientists 261–280 publications: 979 scientists 281–300 publications: 939 scientists 301–320 publications: 764 scientists 321–340 publications: 643 scientists 341–360 publications: 628 scientists 361–380 publications: 522 scientists 381–400 publications: 459 scientists 401–420 publications: 397 scientists 421–440 publications: 327 scientists 441–460 publications: 270 scientists 461–480 publications: 265 scientists 481–500 publications: 252 scientists 501–520 publications: 201 scientists 521–540 publications: 185 scientists 541–560 publications: 148 scientists 561–580 publications: 148 scientists 581–600 publications: 132 scientists 601–620 publications: 114 scientists 621–640 publications: 104 scientists 641–660 publications: 91 scientists 661–680 publications: 92 scientists 681–700 publications: 73 scientists 701–720 publications: 57 scientists 721–740 publications: 54 scientists 741–760 publications: 67 scientists 761–780 publications: 45 scientists 781–800 publications: 46 scientists 801–820 publications: 39 scientists 821–840 publications: 32 scientists 841–860 publications: 36 scientists 861–880 publications: 29 scientists 881–900 publications: 26 scientists 901–920 publications: 24 scientists 921–940 publications: 14 scientists 941–960 publications: 23 scientists 961–980 publications: 28 scientists 981–1,000 publications: 15 scientists 1,001–1,020 publications: 29 scientists 1,021–1,040 publications: 12 scientists 1,041–1,060 publications: 19 scientists 1,061–1,080 publications: 12 scientists 1,081–1,100 publications: 6 scientists 1,101–1,120 publications: 8 scientists 1,121–1,140 publications: 12 scientists 1,141–1,160 publications: 5 scientists 1,161–1,180 publications: 6 scientists 1,181–1,200 publications: 14 scientists 1,201–1,220 publications: 7 scientists 1,221–1,240 publications: 2 scientists 1,241–1,260 publications: 6 scientists 1,261–1,280 publications: 4 scientists 1,281–1,294 publications: 6 scientists 1,295+ publications: 100 scientists
61–80 publications 1,295+

This scientist: 169 publications — 21st percentile

21% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,295 publications or more.

View publications distribution as a table
Number of Chemistry scientists by publication count, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
Publications Scientists This scientist
61–80 66
81–100 302
101–120 623
121–140 918
141–160 1,218
161–180 1,350 169
181–200 1,344
201–220 1,281
221–240 1,216
241–260 1,100
261–280 979
281–300 939
301–320 764
321–340 643
341–360 628
361–380 522
381–400 459
401–420 397
421–440 327
441–460 270
461–480 265
481–500 252
501–520 201
521–540 185
541–560 148
561–580 148
581–600 132
601–620 114
621–640 104
641–660 91
661–680 92
681–700 73
701–720 57
721–740 54
741–760 67
761–780 45
781–800 46
801–820 39
821–840 32
841–860 36
861–880 29
881–900 26
901–920 24
921–940 14
941–960 23
961–980 28
981–1,000 15
1,001–1,020 29
1,021–1,040 12
1,041–1,060 19
1,061–1,080 12
1,081–1,100 6
1,101–1,120 8
1,121–1,140 12
1,141–1,160 5
1,161–1,180 6
1,181–1,200 14
1,201–1,220 7
1,221–1,240 2
1,241–1,260 6
1,261–1,280 4
1,281–1,294 6
1,295+ 100
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Yasuhiro Umebayashi D-index placement in Chemistry in 2026

The chart shows the D-index (discipline H-index) distribution of Chemistry scientists ranked by Research.com in 2026. The highlighted bar marks where Yasuhiro Umebayashi sits on this spectrum.

No. of scientists
250 500 750 1,000
Bar chart with 61 bars. Horizontal axis: D-Index, 40–41 to 159+. Vertical axis: number of scientists, 0 to 1,051. Most scientists, 1,051, have 56–57 D-Index. The last bar groups every scientist with 159 D-Index or more. The highlighted bar, 50–51 D-Index, is where this scientist sits. 40–41 D-Index: 289 scientists 42–43 D-Index: 612 scientists 44–45 D-Index: 808 scientists 46–47 D-Index: 776 scientists 48–49 D-Index: 835 scientists 50–51 D-Index: 861 scientists 52–53 D-Index: 872 scientists 54–55 D-Index: 933 scientists 56–57 D-Index: 1,051 scientists 58–59 D-Index: 930 scientists 60–61 D-Index: 882 scientists 62–63 D-Index: 834 scientists 64–65 D-Index: 731 scientists 66–67 D-Index: 775 scientists 68–69 D-Index: 683 scientists 70–71 D-Index: 646 scientists 72–73 D-Index: 561 scientists 74–75 D-Index: 501 scientists 76–77 D-Index: 437 scientists 78–79 D-Index: 388 scientists 80–81 D-Index: 354 scientists 82–83 D-Index: 292 scientists 84–85 D-Index: 275 scientists 86–87 D-Index: 254 scientists 88–89 D-Index: 235 scientists 90–91 D-Index: 185 scientists 92–93 D-Index: 192 scientists 94–95 D-Index: 155 scientists 96–97 D-Index: 163 scientists 98–99 D-Index: 125 scientists 100–101 D-Index: 105 scientists 102–103 D-Index: 105 scientists 104–105 D-Index: 112 scientists 106–107 D-Index: 88 scientists 108–109 D-Index: 68 scientists 110–111 D-Index: 69 scientists 112–113 D-Index: 65 scientists 114–115 D-Index: 79 scientists 116–117 D-Index: 61 scientists 118–119 D-Index: 44 scientists 120–121 D-Index: 37 scientists 122–123 D-Index: 40 scientists 124–125 D-Index: 33 scientists 126–127 D-Index: 26 scientists 128–129 D-Index: 34 scientists 130–131 D-Index: 35 scientists 132–133 D-Index: 25 scientists 134–135 D-Index: 27 scientists 136–137 D-Index: 17 scientists 138–139 D-Index: 16 scientists 140–141 D-Index: 20 scientists 142–143 D-Index: 20 scientists 144–145 D-Index: 15 scientists 146–147 D-Index: 9 scientists 148–149 D-Index: 9 scientists 150–151 D-Index: 16 scientists 152–153 D-Index: 11 scientists 154–155 D-Index: 9 scientists 156–157 D-Index: 3 scientists 158 D-Index: 3 scientists 159+ D-Index: 98 scientists
40–41 D-Index 159+

This scientist: 51 D-Index — 23rd percentile

23% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 159 D-Index or more.

View D-Index distribution as a table
Number of Chemistry scientists by D-index, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
D-Index Scientists This scientist
40–41 289
42–43 612
44–45 808
46–47 776
48–49 835
50–51 861 51
52–53 872
54–55 933
56–57 1,051
58–59 930
60–61 882
62–63 834
64–65 731
66–67 775
68–69 683
70–71 646
72–73 561
74–75 501
76–77 437
78–79 388
80–81 354
82–83 292
84–85 275
86–87 254
88–89 235
90–91 185
92–93 192
94–95 155
96–97 163
98–99 125
100–101 105
102–103 105
104–105 112
106–107 88
108–109 68
110–111 69
112–113 65
114–115 79
116–117 61
118–119 44
120–121 37
122–123 40
124–125 33
126–127 26
128–129 34
130–131 35
132–133 25
134–135 27
136–137 17
138–139 16
140–141 20
142–143 20
144–145 15
146–147 9
148–149 9
150–151 16
152–153 11
154–155 9
156–157 3
158 3
159+ 98
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Overview

Yasuhiro Umebayashi is affiliated with Niigata University in Japan and has contributed significantly to the fields of engineering and chemical engineering, with a particular focus on electrical and electronic engineering, catalysis, materials chemistry, mechanical engineering, and biomedical engineering.

The primary areas of research work include advanced battery materials and technologies, ionic liquids properties and applications, advancements in battery materials, solid-state spectroscopy and crystallography, extraction and separation processes, chemical and physical properties in aqueous solutions, and advanced battery technologies research.

The scientist has published extensively in several journals, with frequent contributions to the following venues:

  • The Journal of Physical Chemistry B
  • Journal of Molecular Liquids
  • Bulletin of the Chemical Society of Japan
  • The Journal of Physical Chemistry C
  • The Journal of Chemical Physics

Recent papers authored or co-authored by Yasuhiro Umebayashi include:

  • Transport Properties of Ionic Liquid and Sodium Salt Mixtures for Sodium-Ion Battery Electrolytes from Molecular Dynamics Simulation with a Self-Consistent Atomic Charge Determination, 2020, The Journal of Physical Chemistry B
  • Speciation Analysis and Thermodynamic Criteria of Solvated Ionic Liquids: Ionic Liquids or Superconcentrated Solutions?, 2020, The Journal of Physical Chemistry Letters
  • Effect of Brønsted Acidity on Ion Conduction in Fluorinated Acetic Acid and N-Methylimidazole Equimolar Mixtures as Pseudo-protic Ionic Liquids, 2020, The Journal of Physical Chemistry B
  • Ionic conduction within non-stoichiometric N-Methylimidazole-Acetic Acid Pseudo-Protic ionic liquid mixtures, 2022, Journal of Molecular Liquids
  • Thermodynamic aspect of sulfur, polysulfide anion and lithium polysulfide: plausible reaction path during discharge of lithium-sulfur battery, 2021, Physical Chemistry Chemical Physics

The scientist collaborates frequently with several co-authors, including:

  • Hikari Watanabe
  • Jihae Han
  • Nana Arai
  • Yasuo Kameda
  • Shiro Seki

Best Publications

  • Conformational Equilibrium of Bis(trifluoromethanesulfonyl) Imide Anion of a Room-Temperature Ionic Liquid: Raman Spectroscopic Study and DFT Calculations

    Kenta Fujii;Takao Fujimori;Toshiyuki Takamuku;Ryo Kanzaki

  • Lithium Ion Solvation in Room-Temperature Ionic Liquids Involving Bis(trifluoromethanesulfonyl) Imide Anion Studied by Raman Spectroscopy and DFT Calculations

    Yasuhiro Umebayashi;Takushi Mitsugi;Shuhei Fukuda;Takao Fujimori

  • Direct Evidence for Li Ion Hopping Conduction in Highly Concentrated Sulfolane-Based Liquid Electrolytes.

    Kaoru Dokko;Daiki Watanabe;Yosuke Ugata;Morgan L. Thomas

  • Li(+) solvation in glyme-Li salt solvate ionic liquids.

    Kazuhide Ueno;Ryoichi Tatara;Seiji Tsuzuki;Soshi Saito

  • Chelate effects in glyme/lithium bis(trifluoromethanesulfonyl)amide solvate ionic liquids. I. Stability of solvate cations and correlation with electrolyte properties.

    Ce Zhang;Kazuhide Ueno;Azusa Yamazaki;Kazuki Yoshida

  • Evidence of Conformational Equilibrium of 1-Ethyl-3-methylimidazolium in Its Ionic Liquid Salts: Raman Spectroscopic Study and Quantum Chemical Calculations

    Yasuhiro Umebayashi;Takao Fujimori;Tetsuya Sukizaki;Mitsunori Asada

  • Comprehensive Refractive Index Property for Room-Temperature Ionic Liquids

    Shiro Seki;Seiji Tsuzuki;Kikuko Hayamizu;Yasuhiro Umebayashi;Yasuhiro Umebayashi

  • Studies on the translational and rotational motions of ionic liquids composed of N-methyl-N-propyl-pyrrolidinium (P13) cation and bis(trifluoromethanesulfonyl)amide and bis(fluorosulfonyl)amide anions and their binary systems including lithium salts.

    Kikuko Hayamizu;Seiji Tsuzuki;Shiro Seki;Kenta Fujii

  • Liquid Structure of Room-Temperature Ionic Liquid, 1-Ethyl-3-methylimidazolium Bis-(trifluoromethanesulfonyl) Imide

    Kenta Fujii;Yasufumi Soejima;Yasuhiro Kyoshoin;Shuhei Fukuda

  • Effects of cation and anion on physical properties of room-temperature ionic liquids

    Shiro Seki;Takeshi Kobayashi;Yo Kobayashi;Katsuhito Takei

  • Unusual Li+ Ion Solvation Structure in Bis(fluorosulfonyl)amide Based Ionic Liquid

    Kenta Fujii;Hiroshi Hamano;Hiroyuki Doi;Xuedan Song

  • Experimental evidences for molecular origin of low-Q peak in neutron/x-ray scattering of 1-alkyl-3-methylimidazolium bis(trifluoromethanesulfonyl)amide ionic liquids

    Kenta Fujii;Ryo Kanzaki;Toshiyuki Takamuku;Yasuo Kameda

  • Anion conformation of low-viscosity room-temperature ionic liquid 1-ethyl-3-methylimidazolium bis(fluorosulfonyl) imide.

    Kenta Fujii;Shiro Seki;Shuhei Fukuda;Ryo Kanzaki

  • Solvation Structure of Li+ in Concentrated LiPF6−Propylene Carbonate Solutions

    Yasuo Kameda;Yasuhiro Umebayashi;Munetaka Takeuchi;Mohanmmad Abdul Wahab

  • Raman Spectroscopic Studies and Ab Initio Calculations on Conformational Isomerism of 1-Butyl-3-methylimidazolium Bis-(trifluoromethanesulfonyl)amide Solvated to a Lithium Ion in Ionic Liquids: Effects of the Second Solvation Sphere of the Lithium Ion

    Yasuhiro Umebayashi;Shuto Mori;Kenta Fujii;Seiji Tsuzuki

  • Ion–ion interactions of LiPF6 and LiBF4 in propylene carbonate solutions

    Munetaka Takeuchi;Yasuo Kameda;Yasuhiro Umebayashi;Sari Ogawa

  • A tale of two ions: the conformational landscapes of bis(trifluoromethanesulfonyl)amide and N,N-dialkylpyrrolidinium.

    José N. Canongia Lopes;Karina Shimizu;Agílio A. H. Pádua;Yasuhiro Umebayashi

  • Liquid structure of and Li+ ion solvation in bis(trifluoromethanesulfonyl)amide based ionic liquids composed of 1-ethyl-3-methylimidazolium and N-methyl-N-propylpyrrolidinium cations.

    Yasuhiro Umebayashi;Hiroshi Hamano;Shiro Seki;Babak Minofar

  • Li+ Solvation and Ionic Transport in Lithium Solvate Ionic Liquids Diluted by Molecular Solvents

    Kazuhide Ueno;Junichi Murai;Kohei Ikeda;Seiji Tsuzuki

  • Nuclear magnetic resonance studies on the rotational and translational motions of ionic liquids composed of 1-ethyl-3-methylimidazolium cation and bis(trifluoromethanesulfonyl)amide and bis(fluorosulfonyl)amide anions and their binary systems including lithium salts

    Kikuko Hayamizu;Seiji Tsuzuki;Shiro Seki;Yasuhiro Umebayashi

Frequent Co-Authors

Kenta Fujii
Kenta Fujii Yamaguchi University
Seiji Tsuzuki
Seiji Tsuzuki University of Tokyo
Shiro Seki
Shiro Seki Kogakuin University
Masayoshi Watanabe
Masayoshi Watanabe Yokohama National University
Kaoru Dokko
Kaoru Dokko Yokohama National University
Kazuhide Ueno
Kazuhide Ueno Yokohama National University
José N. Canongia Lopes
José N. Canongia Lopes Instituto Superior Técnico
Shinji Kohara
Shinji Kohara National Institute for Materials Science
Agílio A. H. Pádua
Agílio A. H. Pádua École Normale Supérieure de Lyon
Mitsuhiro Shibayama
Mitsuhiro Shibayama Comprehensive Research Organization for Science and Society

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