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 Takeyoshi Okajima sits on this spectrum.
This scientist: 160 publications — 17th percentile
17% of scientists in this discipline score the same or lower.
The last bar groups every scientist with 1,295 publications or more.
The chart shows the D-index (discipline H-index) distribution of Chemistry scientists ranked by Research.com in 2026. The highlighted bar marks where Takeyoshi Okajima sits on this spectrum.
This scientist: 45 D-Index — 10th percentile
10% of scientists in this discipline score the same or lower.
The last bar groups every scientist with 159 D-Index or more.
Takeyoshi Okajima is affiliated with the Tokyo Institute of Technology in Japan. Their research primarily focuses on engineering, with a particular emphasis on electrical and electronic engineering, automotive engineering, renewable energy, sustainability and the environment, bioengineering, and mechanical engineering.
Okajima has contributed extensively to topics related to advancements in battery materials, advanced battery technologies research, fuel cells and related materials, electrocatalysts for energy conversion, and gas sensing nanomaterials and sensors.
Frequent coauthors in Okajima's work include Hajime Arai, Atsunori Ikezawa, Goro Fukunishi, Fusao Kitamura, and Kota Suzuki. Their collaborations have been featured predominantly in venues such as ECS Meeting Abstracts, Journal of Power Sources, SSRN Electronic Journal, Electrochemistry Communications, and ACS Applied Energy Materials.
Selected recent papers by Okajima include:
C.Retna Raj;Takeyoshi Okajima;Takeo Ohsaka
Protiva Rani Roy;Takeyoshi Okajima;Takeo Ohsaka
C. Retna Raj;Arpan Samanta;Seung Hyo Noh;Siniya Mondal
Muhammad Tanzirul Alam;Md. Mominul Islam;Takeyoshi Okajima;Takeo Ohsaka
Mohamed S. El-Deab;Takeyoshi Okajima;Takeo Ohsaka
Muhammad Tanzirul Alam;Md. Mominul Islam;Takeyoshi Okajima;Takeo Ohsaka
Protiva Rani Roy;Takeyoshi Okajima;Takeo Ohsaka
Yang Tian;Lanqun Mao;Takeyoshi Okajima;Takeo Ohsaka
Md. Mominul Islam;Muhammad Tanzirul Alam;Takeyoshi Okajima;Takeo Ohsaka
Dun Zhang;Takeyoshi Okajima;Futoshi Matsumoto;Takeo Ohsaka
Mohammad Rezaur Rahman;Takeyoshi Okajima;Takeo Ohsaka
Yang Tian;Lanqun Mao;Takeyoshi Okajima;Takeo Ohsaka
Kazuki Arihara;Takako Ariga;Noriko Takashima;Kayo Arihara
Yang Tian;Lanqun Mao;Takeyoshi Okajima;Takeo Ohsaka
Rong Wang;Takeyoshi Okajima;Fusao Kitamura;Takeo Ohsaka
Md. Motahar Hossain;Md. Mominul Islam;Sara Ferdousi;Takeyoshi Okajima
Azhagumuthu Muthukrishnan;Yuta Nabae;Takeyoshi Okajima;Takeo Ohsaka
Ahmed I. Abdelrahman;Ahmad M. Mohammad;Takeyoshi Okajima;Takeo Ohsaka
Seung Hyo Noh;Min Ho Seo;Xiao Ye;Yuki Makinose
Ahmad M. Mohammad;Ahmad M. Mohammad;Mohamed I. Awad;Mohamed I. Awad;Mohamed S. El-Deab;Mohamed S. El-Deab;Takeyoshi Okajima
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