World's Best Scientists 2026 revealed!
Yoshitsugu Kojima

Yoshitsugu Kojima

D-Index & Metrics

Chemistry

D-Index
58
Citations
22950
World Ranking
10435
National Ranking
759

Yoshitsugu Kojima 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 Yoshitsugu Kojima sits on this spectrum.

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 publications 1,295+

This scientist: 299 publications — 63rd percentile

63% of scientists in this discipline score the same or lower.

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

Yoshitsugu Kojima 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 Yoshitsugu Kojima sits on this spectrum.

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 D-Index 159+

This scientist: 58 D-Index — 42nd percentile

42% of scientists in this discipline score the same or lower.

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

Overview

Yoshitsugu Kojima is affiliated with Hiroshima University in Japan and has established a body of research primarily focused on hydrogen storage and ammonia-related energy carriers. Their work spans various interconnected fields within materials science and chemical engineering.

The research contributions include significant publications in the areas of hydrogen storage materials and ammonia synthesis, emphasizing catalytic processes and chemical characterization. Kojima's expertise lies notably in materials chemistry and catalysis, as well as industrial and manufacturing engineering and atomic and molecular physics.

Frequent publication venues for their work include:

  • International Journal of Hydrogen Energy
  • Chemical Communications
  • Energies
  • ACS Omega
  • RSC Advances

Important research topics covered by Kojima's publications are:

  • Hydrogen Storage and Materials
  • Ammonia Synthesis and Nitrogen Reduction
  • Catalytic Processes in Materials Science
  • Chemical Synthesis and Characterization
  • Hybrid Renewable Energy Systems
  • Advanced Chemical Physics Studies
  • Chemical Looping and Thermochemical Processes

Collaborations have been an integral part of Kojima's research endeavors. Frequent coauthors include Masakuni Yamaguchi, Hiroki Miyaoka, Takayuki Ichikawa, Tomoyuki Ichikawa, and Fangqin Guo.

Notable recent publications by Yoshitsugu Kojima comprise:

  • "Ammonia as a hydrogen energy carrier," 2022, International Journal of Hydrogen Energy
  • "Safety of ammonia as a hydrogen energy carrier," 2023, International Journal of Hydrogen Energy
  • "Ammonia storage materials for nitrogen recycling hydrogen and energy carriers," 2020, International Journal of Hydrogen Energy
  • "Investigation on standard entropy change of metal hydrides and work function of metals," 2020, International Journal of Hydrogen Energy

These works reflect a focus on the development of materials and processes relevant to ammonia's role in hydrogen energy systems and nitrogen recycling.

The main fields of study for Kojima are:

  • Materials Science
  • Chemical Engineering

Within these larger fields, their subfields of specialization include:

  • Materials Chemistry
  • Catalysis
  • Industrial and Manufacturing Engineering
  • Atomic and Molecular Physics, and Optics
  • Energy Engineering and Power Technology

Best Publications

  • Synthesis of nylon 6-clay hybrid

    Arimitsu Usuki;Yoshitsugu Kojima;Masaya Kawasumi;Akane Okada

  • Mechanical properties of nylon 6-clay hybrid

    Yoshitsugu Kojima;Arimitsu Usuki;Masaya Kawasumi;Akane Okada

  • Swelling behavior of montmorillonite cation exchanged for ω-amino acids by ∊-caprolactam

    Arimitsu Usuki;Masaya Kawasumi;Yoshitsugu Kojima;Akane Okada

  • Synthesis of nylon 6-clay hybrid by montmorillonite intercalated with ε-caprolactam

    Yoshitsugu Kojima;Arimitsu Usuki;Masaya Kawasumi;Akane Okada

  • Materials for hydrogen-based energy storage – past, recent progress and future outlook

    Michael Hirscher;Volodymyr A. Yartys;Marcello Baricco;Jose Bellosta von Colbe

  • Hydrogen generation using sodium borohydride solution and metal catalyst coated on metal oxide

    Yoshitsugu Kojima;Ken-ichirou Suzuki;Kazuhiro Fukumoto;Megumi Sasaki

  • One‐pot synthesis of nylon 6–clay hybrid

    Yoshitsugu Kojima;Arimitsu Usuki;Masaya Kawasumi;Akane Okada

  • Sorption of water in nylon 6-clay hybrid

    Yoshitsugu Kojima;Arimitsu Usuki;Masaya Kawasumi;Akane Okada

  • Interaction of nylon 6‐clay surface and mechanical properties of nylon 6‐clay hybrid

    Arimitsu Usuki;Akihiko Koiwai;Yoshitsugu Kojima;Masaya Kawasumi

  • Hydrogen storage materials for hydrogen and energy carriers

    Yoshitsugu Kojima

  • Nylon 6–Clay Hybrid

    Akane Okada;Masaya Kawasumi;Arimitsu Usuki;Yoshitsugu Kojima

  • Gas permeabilities in rubber-clay hybrid

    Y. Kojima;K. Fukumori;A. Usuki;A. Okada

  • Recycling process of sodium metaborate to sodium borohydride

    Yoshitsugu Kojima;Tetsuya Haga

  • Fine structure of nylon-6 : clay hybrid

    Yoshitsugu Kojima;Arimitsu Usuki;Masaya Kawasumi;Akane Okada

  • Verfahren zur herstellung eines verbundmaterials

    Masaya Kawasumi;Masao Kohzaki;Yoshitsugu Kojima;Akane Okada

  • Reversible ammonia-based and liquid organic hydrogen carriers for high-density hydrogen storage: Recent progress

    Joshua W. Makepeace;Teng He;Claudia Weidenthaler;Torben R. Jensen

  • Development of vanadium based hydrogen storage material: A review

    Sanjay Kumar;Sanjay Kumar;Ankur Jain;T. Ichikawa;Y. Kojima

  • Development of 10 kW-scale hydrogen generator using chemical hydride

    Yoshitsugu Kojima;Ken-ichirou Suzuki;Kazuhiro Fukumoto;Yasuaki Kawai

  • Novel preferred orientation in injection‐molded nylon 6‐clay hybrid

    Yoshitsugu Kojima;Arimitsu Usuki;Masaya Kawasumi;Akane Okada

  • Compressed hydrogen generation using chemical hydride

    Yoshitsugu Kojima;Yasuaki Kawai;Haruyuki Nakanishi;Shinichi Matsumoto

  • IR characterizations of lithium imide and amide

    Yoshitsugu Kojima;Yasuaki Kawai

Frequent Co-Authors

Takayuki Ichikawa
Takayuki Ichikawa Hiroshima University
Akane Okada
Akane Okada Toyota Motor Corporation (Japan)
Arimitsu Usuki
Arimitsu Usuki Toyota Motor Corporation (Japan)
Hironobu Fujii
Hironobu Fujii Hiroshima University
Bjørn C. Hauback
Bjørn C. Hauback University of Oslo
William I. F. David
William I. F. David University of Oxford
Shin-ichi Orimo
Shin-ichi Orimo Tohoku University
Yoshiaki Fukushima
Yoshiaki Fukushima Advanced Institute of Materials Science
Yuko Nakamori
Yuko Nakamori Tohoku University
Emilio Artacho
Emilio Artacho University of Cambridge

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