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Kenichi Oyaizu

Kenichi Oyaizu

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 52 13393 12051 1020 930 345 12342

Kenichi Oyaizu publications per year

The chart shows the history of publications by Kenichi Oyaizu between 1990 and 2026, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Kenichi Oyaizu published across 37 years, from 1990 to 2026, averaging 10.6 papers a year. Output peaked at 35 publications in 2005. 17 of the 393 publications appeared in the last two years.

No. of publications
10 20 30
Bar chart. Horizontal axis: year, 1990 to 2026. Vertical axis: number of publications, 0 to 35. Peak 35 publications in 2005. 1990: 1 publication 1991: 1 publication 1992: 0 publications 1993: 3 publications 1994: 5 publications 1995: 3 publications 1996: 2 publications 1997: 4 publications 1998: 5 publications 1999: 5 publications 2000: 5 publications 2001: 11 publications 2002: 4 publications 2003: 13 publications 2004: 10 publications 2005: 35 publications 2006: 27 publications 2007: 12 publications 2008: 16 publications 2009: 10 publications 2010: 15 publications 2011: 12 publications 2012: 11 publications 2013: 9 publications 2014: 8 publications 2015: 13 publications 2016: 12 publications 2017: 16 publications 2018: 11 publications 2019: 15 publications 2020: 23 publications 2021: 17 publications 2022: 16 publications 2023: 19 publications 2024: 7 publications 2025: 16 publications 2026: 1 publication
1990 2026

393 publications in total across all disciplines

View publications per year as a table
Kenichi Oyaizu: publications per year, 1990 to 2026
Year Publications
1990 1
1991 1
1992 0
1993 3
1994 5
1995 3
1996 2
1997 4
1998 5
1999 5
2000 5
2001 11
2002 4
2003 13
2004 10
2005 35
2006 27
2007 12
2008 16
2009 10
2010 15
2011 12
2012 11
2013 9
2014 8
2015 13
2016 12
2017 16
2018 11
2019 15
2020 23
2021 17
2022 16
2023 19
2024 7
2025 16
2026 1
Total 393
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Kenichi Oyaizu 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 Kenichi Oyaizu 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, 341–360 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: 345 publications — 72nd percentile

72% 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
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
341–360 628 345
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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Kenichi Oyaizu 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 Kenichi Oyaizu 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, 52–53 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: 52 D-Index — 26th percentile

26% 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
52–53 872 52
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

Kenichi Oyaizu is affiliated with Waseda University in Japan and has conducted extensive research primarily in the fields of Materials Science and Engineering. Their work encompasses multiple subfields, including Electrical and Electronic Engineering, Materials Chemistry, Polymers and Plastics, Organic Chemistry, and Electronic, Optical and Magnetic Materials.

Their research focuses on several key topics, notably:

  • Conducting polymers and applications
  • Advanced battery technologies research
  • Synthesis and properties of polymers
  • Advanced Battery Materials and Technologies
  • Silicone and Siloxane Chemistry
  • Machine Learning in Materials Science
  • Advancements in Battery Materials

Oyaizu has contributed to a variety of academic journals, with frequent publications in venues such as:

  • ACS Applied Polymer Materials
  • ChemSusChem
  • Bulletin of the Chemical Society of Japan
  • Macromolecules
  • RSC Advances

The scientist's recent papers illustrate a focus on redox-active polymers, energy storage, and organic electronics. Selected publications include:

  • "Nitroxide radical polymers for emerging plastic energy storage and organic electronics: fundamentals, materials, and applications" (2020) published in Materials Horizons
  • "AI-Assisted Exploration of Superionic Glass-Type Li+ Conductors with Aromatic Structures" (2020) published in Journal of the American Chemical Society
  • "Redox: Organic Robust Radicals and Their Polymers for Energy Conversion/Storage Devices" (2023) published in Chemical Reviews
  • "Reversible Reduction of the TEMPO Radical: One Step Closer to an All-Organic Redox Flow Battery" (2020) published in ACS Sustainable Chemistry & Engineering
  • "Rechargeable proton exchange membrane fuel cell containing an intrinsic hydrogen storage polymer" (2020) published in Communications Chemistry

Frequent collaborators include several researchers with whom Oyaizu has co-authored multiple studies. These co-authors are Kan Hatakeyama-Sato, Seigo Watanabe, Kouki Oka, Hiroyuki Nishide, and Yusuke Kaiwa.

Best Publications

  • Toward Flexible Batteries

    Hiroyuki Nishide;Kenichi Oyaizu

  • Radical Polymers for Organic Electronic Devices: A Radical Departure from Conjugated Polymers?

    Kenichi Oyaizu;Hiroyuki Nishide

  • Emerging N-Type Redox-Active Radical Polymer for a Totally Organic Polymer-Based Rechargeable Battery

    Takeo Suga;Hiroki Ohshiro;Shuhei Sugita;Kenichi Oyaizu

  • Organic Radical Battery Approaching Practical Use

    Kentaro Nakahara;Kenichi Oyaizu;Hiroyuki Nishide

  • Modifying carbon particles with polypyrrole for adsorption of cobalt ions as electrocatatytic site for oxygen reduction

    Makoto Yuasa;Aritomo Yamaguchi;Hisayuki Itsuki;Ken Tanaka

  • p‐ and n‐Type Bipolar Redox‐Active Radical Polymer: Toward Totally Organic Polymer‐Based Rechargeable Devices with Variable Configuration

    Takeo Suga;Shuhei Sugita;Hiroki Ohshiro;Kenichi Oyaizu

  • Aqueous electrochemistry of poly(vinylanthraquinone) for anode-active materials in high-density and rechargeable polymer/air batteries.

    Wonsung Choi;Daisuke Harada;Kenichi Oyaizu;Hiroyuki Nishide

  • Nernstian adsorbate-like bulk layer of organic radical polymers for high-density charge storage purposes

    Kenichi Oyaizu;Yuko Ando;Hiroaki Konishi;Hiroyuki Nishide

  • Synthesis and properties of novel sulfonated arylene ether/fluorinated alkane copolymers

    Kenji Miyatake;Kenichi Oyaizu;Eishun Tsuchida;Allan S. Hay

  • Electron-Transfer Kinetics of Nitroxide Radicals as an Electrode-Active Material

    Takeo Suga;Yong Jin Pu;Kenichi Oyaizu;Hiroyuki Nishide

  • Battery-Inspired, Nonvolatile, and Rewritable Memory Architecture: a Radical Polymer-Based Organic Device

    Yasunori Yonekuta;Kentaro Susuki;Kenichi Oyaizu;Kenji Honda

  • An ultrafast chargeable polymer electrode based on the combination of nitroxide radical and aqueous electrolyte.

    Kenichiroh Koshika;Naoki Sano;Kenichi Oyaizu;Hiroyuki Nishide

  • A TEMPO-substituted polyacrylamide as a new cathode material: an organic rechargeable device composed of polymer electrodes and aqueous electrolyte

    Kenichiroh Koshika;Natsuru Chikushi;Naoki Sano;Kenichi Oyaizu

  • An Aqueous, Electrolyte-Type, Rechargeable Device Utilizing a Hydrophilic Radical Polymer-Cathode

    Kenichiroh Koshika;Naoki Sano;Kenichi Oyaizu;Hiroyuki Nishide

  • Synthesis and Characterization of Radical-Bearing Polyethers as an Electrode-Active Material for Organic Secondary Batteries

    Kenichi Oyaizu;Takeo Suga;Kentaro Yoshimura;Hiroyuki Nishide

  • Diffusion-Cooperative Model for Charge Transport by Redox-Active Nonconjugated Polymers

    Kan Sato;Rieka Ichinoi;Ryusuke Mizukami;Takuma Serikawa

  • Radical polymer-wrapped SWNTs at a molecular level: high-rate redox mediation through a percolation network for a transparent charge-storage material.

    Wonsung Choi;Shota Ohtani;Kenichi Oyaizu;Hiroyuki Nishide;Hiroyuki Nishide

  • Synthesis and charge transport properties of redox-active nitroxide polyethers with large site density

    Kenichi Oyaizu;Takeshi Kawamoto;Takeo Suga;Hiroyuki Nishide

  • Linear Ladder-Type π-Conjugated Polymers Composed of Fused Thiophene Ring Systems

    Kenichi Oyaizu;Tomokazu Iwasaki;Yoshiaki Tsukahara;Eishun Tsuchida

  • Polyviologen Hydrogel with High-Rate Capability for Anodes toward an Aqueous Electrolyte-Type and Organic-Based Rechargeable Device

    Naoki Sano;Wataru Tomita;Shu Hara;Cheong Min Min

Frequent Co-Authors

Hiroyuki Nishide
Hiroyuki Nishide Waseda University
Eishun Tsuchida
Eishun Tsuchida Waseda University
Kimihisa Yamamoto
Kimihisa Yamamoto Tokyo Institute of Technology
Xiuli Zhuang
Xiuli Zhuang Chinese Academy of Sciences
Xuesi Chen
Xuesi Chen Chinese Academy of Sciences
Hiroshi Segawa
Hiroshi Segawa University of Tokyo
Kenji Miyatake
Kenji Miyatake University of Yamanashi
Maria Strømme
Maria Strømme Uppsala University
Wai-Yeung Wong
Wai-Yeung Wong Hong Kong Polytechnic University
Ekaterina I. Izgorodina
Ekaterina I. Izgorodina Monash University

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