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Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 42 17375 15713 1372 1242 137 11250

Zyun Siroma publications per year

The chart shows the history of publications by Zyun Siroma between 1995 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Zyun Siroma published across 31 years, from 1995 to 2025, averaging 4.8 papers a year. Output peaked at 12 publications in 2006. 11 of the 148 publications appeared in the last two years.

No. of publications
5 10
Bar chart. Horizontal axis: year, 1995 to 2025. Vertical axis: number of publications, 0 to 12. Peak 12 publications in 2006. 1995: 1 publication 1996: 1 publication 1997: 2 publications 1998: 2 publications 1999: 1 publication 2000: 2 publications 2001: 2 publications 2002: 4 publications 2003: 4 publications 2004: 2 publications 2005: 3 publications 2006: 12 publications 2007: 12 publications 2008: 10 publications 2009: 3 publications 2010: 10 publications 2011: 10 publications 2012: 8 publications 2013: 8 publications 2014: 7 publications 2015: 4 publications 2016: 12 publications 2017: 0 publications 2018: 2 publications 2019: 3 publications 2020: 4 publications 2021: 0 publications 2022: 5 publications 2023: 3 publications 2024: 6 publications 2025: 5 publications
1995 2025

148 publications in total across all disciplines

View publications per year as a table
Zyun Siroma: publications per year, 1995 to 2025
Year Publications
1995 1
1996 1
1997 2
1998 2
1999 1
2000 2
2001 2
2002 4
2003 4
2004 2
2005 3
2006 12
2007 12
2008 10
2009 3
2010 10
2011 10
2012 8
2013 8
2014 7
2015 4
2016 12
2017 0
2018 2
2019 3
2020 4
2021 0
2022 5
2023 3
2024 6
2025 5
Total 148
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Zyun Siroma publications per year - data summary

  • Zyun Siroma, a Chemistry scholar from National Institute of Advanced Industrial Science and Technology, has 148 publications recorded across 31 years, from 1995 to 2025.
  • The oldest publication on record dates to 1995 and the most recent to 2025.
  • The most productive years are 2006, 2007 and 2016, with 12 publications each.
  • The least productive years with any output are 1995, 1996 and 1999, with 1 publication each.
  • 2 of the 31 years in the span carry no publications at all (2017 and 2021).
  • The rate of publication averages 4.8 papers per year over the whole span, or 5.1 per year counting only the 29 years with at least one publication.
  • The last 5 years on the chart (2021-2025) hold 19 publications, 13% of the career total.
  • Split into equal eras - 1995-2005: 24 publications (2.2 per year); 2006-2016: 96 publications (8.7 per year); 2017-2025: 28 publications (3.1 per year).
  • Comparing the opening and closing eras, the overall trend of publication is rising.

Zyun Siroma 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 Zyun Siroma 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, 121–140 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: 137 publications — 10th percentile

10% 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
121–140 918 137
141–160 1,218
161–180 1,350
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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Zyun Siroma publication distribution in Chemistry in 2026 - data summary

  • The chart plots the publication count of all 17,934 Chemistry scientists ranked by Research.com in 2026, grouped into 63 ranges running from 61–80 to 1,295+ publications.
  • Zyun Siroma, a Chemistry scholar from National Institute of Advanced Industrial Science and Technology, records 137 publications - the 10th percentile of the discipline.
  • 10% of ranked Chemistry scientists score the same or lower than Zyun Siroma, and about 90% score higher.
  • The median of the discipline falls in the 241–260 publications range, and Zyun Siroma ranks below the median.
  • The most crowded range is 161–180 publications, holding 1,350 scientists (8% of the field).
  • 77% of the field sits in the lowest quarter of the value range (up to 361–380 publications), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 1,295 publications or more, 100 scientists in all (<1% of the field).

Zyun Siroma 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 Zyun Siroma 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, 42–43 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: 42 D-Index — 3rd percentile

3% 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 42
44–45 808
46–47 776
48–49 835
50–51 861
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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Zyun Siroma D-index placement in Chemistry in 2026 - data summary

  • The chart plots the discipline H-index (D-index) of all 17,934 Chemistry scientists ranked by Research.com in 2026, grouped into 61 ranges running from 40–41 to 159+ D-Index.
  • Zyun Siroma, a Chemistry scholar from National Institute of Advanced Industrial Science and Technology, records 42 D-Index - the 3rd percentile of the discipline.
  • 3% of ranked Chemistry scientists score the same or lower than Zyun Siroma, and about 97% score higher.
  • The median of the discipline falls in the 62–63 D-Index range, and Zyun Siroma ranks below the median.
  • The most crowded range is 56–57 D-Index, holding 1,051 scientists (6% of the field).
  • 70% of the field sits in the lowest quarter of the value range (up to 70–71 D-Index), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 159 D-Index or more, 98 scientists in all (<1% of the field).

Overview

Zyun Siroma is affiliated with the National Institute of Advanced Industrial Science and Technology in Japan. Their research primarily intersects the fields of Engineering and Materials Science, with particular focus on subfields such as Electrical and Electronic Engineering, Materials Chemistry, Renewable Energy, Sustainability and the Environment, Automotive Engineering, and Polymers and Plastics.

The main topics addressed in their work include Fuel Cells and Related Materials, Advancements in Battery Materials, Electrocatalysts for Energy Conversion, Advanced Battery Technologies Research, Advanced Battery Materials and Technologies, Catalytic Processes in Materials Science, and Analytical Chemistry and Sensors.

The scientist has contributed to multiple research publications spanning several peer-reviewed venues. Frequent publication sources include Electrochemistry, ECS Meeting Abstracts, Electroanalysis, Chemistry of Materials, and Journal of Electroanalytical Chemistry.

Among recent publications associated with or relevant to their research are:

  • Multi-rail transmission-line model as an equivalent circuit for electrochemical impedance of a porous electrode, 2020, Journal of Electroanalytical Chemistry
  • Electrochemical Impedance Spectroscopy Part 1: Fundamentals, 2022, Electrochemistry
  • Electrochemical Impedance Spectroscopy Part 2: Applications, 2022, Electrochemistry
  • Effect of rotating disk electrode conditions on oxygen evolution reaction activity of Ir nanoparticle catalysts and comparison with membrane and electrode assemblies, 2022, International Journal of Hydrogen Energy
  • Electrochemical CO oxidation by a Rh tetraaza[14]annulene-based catalyst, 2020, ChemCatChem

The scientist collaborates frequently with other researchers, including Tsutomu Ioroi, T. Nagai, Tetsu Kiyobayashi, Hirotada Gamo, and Yasushi Maeda.

Best Publications

  • Scientific aspects of polymer electrolyte fuel cell durability and degradation.

    Rodney Borup;Jeremy Meyers;Bryan Pivovar;Yu Seung Kim

  • Thin film electrocatalyst layer for unitized regenerative polymer electrolyte fuel cells

    Tsutomu Ioroi;Kazuaki Yasuda;Zyun Siroma;Naoko Fujiwara

  • Platinum dissolution and deposition in the polymer electrolyte membrane of a PEM fuel cell as studied by potential cycling

    Kazuaki Yasuda;Akira Taniguchi;Tomoki Akita;Tsutomu Ioroi

  • Sub-stoichiometric titanium oxide-supported platinum electrocatalyst for polymer electrolyte fuel cells

    Tsutomu Ioroi;Zyun Siroma;Naoko Fujiwara;Shin-ichi Yamazaki

  • High-capacity organic positive-electrode material based on a benzoquinone derivative for use in rechargeable lithium batteries

    Masaru Yao;Hiroshi Senoh;Shin-ichi Yamazaki;Zyun Siroma

  • Potential application of anion-exchange membrane for hydrazine fuel cell electrolyte

    Koji Yamada;Kazuaki Yasuda;Naoko Fujiwara;Zyun Siroma

  • Stability of Corrosion-Resistant Magnéli-Phase Ti4O7-Supported PEMFC Catalysts at High Potentials

    Tsutomu Ioroi;Hiroshi Senoh;Shin-ichi Yamazaki;Zyun Siroma

  • Electrocatalysts for PEM Fuel Cells

    Tsutomu Ioroi;Zyun Siroma;Shin‐ichi Yamazaki;Kazuaki Yasuda

  • Electrochemical Scanning Tunneling Microscopy Observation of Highly Oriented Pyrolytic Graphite Surface Reactions in an Ethylene Carbonate-Based Electrolyte Solution

    Minoru Inaba;Zyun Siroma;Atsushi Funabiki;Zempachi Ogumi

  • A fuel cell with selective electrocatalysts using hydrogen peroxide as both an electron acceptor and a fuel

    Shin-ichi Yamazaki;Zyun Siroma;Hiroshi Senoh;Tsutomu Ioroi

  • Direct ethanol fuel cells using an anion exchange membrane

    Naoko Fujiwara;Zyun Siroma;Shin-ichi Yamazaki;Tsutomu Ioroi

  • Analytical TEM study of Pt particle deposition in the proton-exchange membrane of a membrane-electrode-assembly

    Tomoki Akita;Akira Taniguchi;Junko Maekawa;Zyun Siroma

  • Depression of proton conductivity in recast Nafion® film measured on flat substrate

    Zyun Siroma;Ryou Kakitsubo;Naoko Fujiwara;Tsutomu Ioroi

  • Ionic Conduction in Lithium Ion Battery Composite Electrode Governs Cross-sectional Reaction Distribution

    Yuki Orikasa;Yuma Gogyo;Hisao Yamashige;Misaki Katayama

  • Electrochemical scanning tunneling microscopy analysis of the surface reactions on graphite basal plane in ethylene carbonate-based solvents and propylene carbonate

    Minoru Inaba;Zyun Siroma;Yutaka Kawatate;Atsushi Funabiki

  • A two-compartment cell for using soluble benzoquinone derivatives as active materials in lithium secondary batteries

    Hiroshi Senoh;Masaru Yao;Hikari Sakaebe;Kazuaki Yasuda

  • AC impedance analysis of ionic and electronic conductivities in electrode mixture layers for an all-solid-state lithium-ion battery

    Zyun Siroma;Tomohiro Sato;Tomonari Takeuchi;Ryo Nagai

  • Nonenzymatic glucose fuel cells with an anion exchange membrane as an electrolyte

    Naoko Fujiwara;Shin-ichi Yamazaki;Zyun Siroma;Tsutomu Ioroi

  • Dissolution of Nafion® membrane and recast Nafion® film in mixtures of methanol and water

    Z. Siroma;N. Fujiwara;T. Ioroi;S. Yamazaki

  • Platinum and molybdenum oxide deposited carbon electrocatalyst for oxidation of hydrogen containing carbon monoxide

    Tsutomu Ioroi;Naoko Fujiwara;Zyun Siroma;Kazuaki Yasuda

Frequent Co-Authors

Tsutomu Ioroi
Tsutomu Ioroi National Institute of Advanced Industrial Science and Technology
Kazuaki Yasuda
Kazuaki Yasuda National Institute of Advanced Industrial Science and Technology
Minoru Inaba
Minoru Inaba Doshisha University
Tomoki Akita
Tomoki Akita National Institute of Advanced Industrial Science and Technology
Zempachi Ogumi
Zempachi Ogumi Kyoto University
Susumu Kuwabata
Susumu Kuwabata Osaka University
Yoshiharu Uchimoto
Yoshiharu Uchimoto Kyoto University
Hajime Matsumoto
Hajime Matsumoto National Institute of Advanced Industrial Science and Technology
Yuki Orikasa
Yuki Orikasa Ritsumeikan University
Tetsuhiko Kobayashi
Tetsuhiko Kobayashi National Institute of Advanced Industrial Science and Technology

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