Keiichi Kohama

879 total citations
30 papers, 746 citations indexed

About

Keiichi Kohama is a scholar working on Electrical and Electronic Engineering, Materials Chemistry and Electronic, Optical and Magnetic Materials. According to data from OpenAlex, Keiichi Kohama has authored 30 papers receiving a total of 746 indexed citations (citations by other indexed papers that have themselves been cited), including 22 papers in Electrical and Electronic Engineering, 19 papers in Materials Chemistry and 7 papers in Electronic, Optical and Magnetic Materials. Recurrent topics in Keiichi Kohama's work include Advancements in Battery Materials (17 papers), Advanced Battery Materials and Technologies (14 papers) and Porphyrin and Phthalocyanine Chemistry (9 papers). Keiichi Kohama is often cited by papers focused on Advancements in Battery Materials (17 papers), Advanced Battery Materials and Technologies (14 papers) and Porphyrin and Phthalocyanine Chemistry (9 papers). Keiichi Kohama collaborates with scholars based in Japan, Switzerland and Nepal. Keiichi Kohama's co-authors include Yuichi Ikuhara, Craig A. J. Fisher, Hiroki Moriwake, Yumi H. Ikuhara, Akihide Kuwabara, Xiang Gao, Yumi H. Ikuhara, Shaoli Fang, Hajime Hoshi and Yasuyuki Fujiwara and has published in prestigious journals such as Applied Physics Letters, Journal of Power Sources and Acta Materialia.

In The Last Decade

Keiichi Kohama

30 papers receiving 735 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Keiichi Kohama Japan 16 592 328 137 129 118 30 746
Kinson C. Kam United States 12 430 0.7× 208 0.6× 113 0.8× 132 1.0× 196 1.7× 20 662
Arijita Mukherjee United States 9 723 1.2× 199 0.6× 188 1.4× 89 0.7× 155 1.3× 12 844
Alexander B. Brady United States 15 610 1.0× 312 1.0× 104 0.8× 95 0.7× 262 2.2× 29 789
Sujin Kang South Korea 14 1.0k 1.8× 234 0.7× 469 3.4× 74 0.6× 180 1.5× 28 1.2k
Xiangdong Xu United Kingdom 10 476 0.8× 163 0.5× 73 0.5× 91 0.7× 224 1.9× 17 673
K. Weichert Germany 14 745 1.3× 256 0.8× 210 1.5× 46 0.4× 195 1.7× 24 904
Chuanjing Xu China 8 485 0.8× 158 0.5× 118 0.9× 25 0.2× 90 0.8× 8 584
Christopher J. Patridge United States 11 471 0.8× 287 0.9× 47 0.3× 418 3.2× 205 1.7× 18 726
Jonas Sottmann Norway 15 484 0.8× 223 0.7× 114 0.8× 45 0.3× 208 1.8× 25 652
Gyuha Jo South Korea 7 320 0.5× 141 0.4× 50 0.4× 142 1.1× 83 0.7× 7 448

Countries citing papers authored by Keiichi Kohama

Since Specialization
Citations

This map shows the geographic impact of Keiichi Kohama's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Keiichi Kohama with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Keiichi Kohama more than expected).

Fields of papers citing papers by Keiichi Kohama

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Keiichi Kohama. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Keiichi Kohama. The network helps show where Keiichi Kohama may publish in the future.

Co-authorship network of co-authors of Keiichi Kohama

This figure shows the co-authorship network connecting the top 25 collaborators of Keiichi Kohama. A scholar is included among the top collaborators of Keiichi Kohama based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Keiichi Kohama. Keiichi Kohama is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Moriwake, Hiroki, Akihide Kuwabara, Craig A. J. Fisher, et al.. (2023). Sodium-ion migration in secondary battery cathode material Na<sub>4</sub>Co<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub>P<sub>2</sub>O<sub>7</sub>: A first-principles molecular dynamics study. Journal of the Ceramic Society of Japan. 131(7). 279–283. 4 indexed citations
2.
Gao, Xiang, Yumi H. Ikuhara, Yumi H. Ikuhara, et al.. (2018). Oxygen loss and surface degradation during electrochemical cycling of lithium-ion battery cathode material LiMn2O4. Journal of Materials Chemistry A. 7(15). 8845–8854. 78 indexed citations
3.
Hu, Xiaobing, Craig A. J. Fisher, Shunsuke Kobayashi, et al.. (2017). Atomic scale imaging of structural changes in solid electrolyte lanthanum lithium niobate upon annealing. Acta Materialia. 127. 211–219. 11 indexed citations
4.
Ikuhara, Yumi H., Yumi H. Ikuhara, Xiang Gao, et al.. (2017). Atomic level changes during capacity fade in highly oriented thin films of cathode material LiCoPO4. Journal of Materials Chemistry A. 5(19). 9329–9338. 28 indexed citations
5.
Hu, Xiaobing, Shunsuke Kobayashi, Yumi H. Ikuhara, et al.. (2016). Atomic scale imaging of structural variations in La(1-)/3Li NbO3 (0 ≤ x ≤ 0.13) solid electrolytes. Acta Materialia. 123. 167–176. 27 indexed citations
6.
Gao, Xiang, Craig A. J. Fisher, Yumi H. Ikuhara, et al.. (2015). Cation ordering in A-site-deficient Li-ion conducting perovskites La(1−x)/3LixNbO3. Journal of Materials Chemistry A. 3(7). 3351–3359. 36 indexed citations
7.
Gao, Xiang, Yumi H. Ikuhara, Yumi H. Ikuhara, et al.. (2014). Structural Distortion and Compositional Gradients Adjacent to Epitaxial LiMn2O4 Thin Film Interfaces. Advanced Materials Interfaces. 1(8). 32 indexed citations
8.
Gao, Xiang, Yumi H. Ikuhara, Yumi H. Ikuhara, et al.. (2014). Thin Films: Structural Distortion and Compositional Gradients Adjacent to Epitaxial LiMn2O4 Thin Film Interfaces (Adv. Mater. Interfaces 8/2014). Advanced Materials Interfaces. 1(8). 5 indexed citations
9.
Gao, Xiang, Craig A. J. Fisher, Masako Kimura, et al.. (2013). Domain boundary structures in lanthanum lithium titanates. Journal of Materials Chemistry A. 2(3). 843–852. 71 indexed citations
10.
Teshima, Katsuya, et al.. (2011). Growth of Well-Developed Li4Ti5O12 Crystals by the Cooling of a Sodium Chloride Flux. Crystal Growth & Design. 11(10). 4401–4405. 39 indexed citations
11.
Yamada, Hideto, et al.. (2011). Fabrication of the oriented LiCoO2 sheet using a strong magnetic field. Journal of the Ceramic Society of Japan. 119(1393). 701–705. 8 indexed citations
12.
Teshima, Katsuya, Sunhyung Lee, Yusuke Mizuno, et al.. (2010). Environmentally Friendly Growth of Well-Developed LiCoO2 Crystals for Lithium-Ion Rechargeable Batteries Using a NaCl Flux. Crystal Growth & Design. 10(10). 4471–4475. 50 indexed citations
13.
Akiyama, Tsuyoshi, Kosuke Sugawa, Sunao Yamada, et al.. (2009). Facile Fabrication and Photocurrent Generation Properties of Electrochemically Polymerized Fullerene–Poly(ethylene dioxythiophene) Composite Films. Japanese Journal of Applied Physics. 48(4S). 04C172–04C172. 14 indexed citations
14.
Sugawa, Kosuke, Tsuyoshi Akiyama, Sunao Yamada, et al.. (2007). Characterization and Evaluation of Role of Porphyrin Moiety in meso-Tetrathienylporphyrin–Polythiophene Composite Film. Japanese Journal of Applied Physics. 46(4S). 2632–2632. 14 indexed citations
15.
Akiyama, Tsuyoshi, Sunao Yamada, Kensuke Takechi, et al.. (2005). Solid-State Solar Cells Consisting of Polythiophene-Porphyrin Composite Films. Japanese Journal of Applied Physics. 44(4S). 2799–2799. 18 indexed citations
16.
Fang, Shaoli, Hajime Hoshi, Keiichi Kohama, & Yusei Maruyama. (1996). Nonlinear Optical Characteristics of Vanadyl Phthalocyanine Thin Film Grown by the Molecular Beam Epitaxial Method. The Journal of Physical Chemistry. 100(10). 4104–4110. 11 indexed citations
17.
Maruyama, Yusei, Hajime Hoshi, Shaoli Fang, & Keiichi Kohama. (1995). Nonlinear optical characteristics of MBE-grown phthalocyanine thin films. Synthetic Metals. 71(1-3). 1653–1656. 2 indexed citations
18.
Hoshi, Hajime, Toshiki Yamada, Ken Ishikawa, et al.. (1994). Thickness Dependence of the Epitaxial Structure of Vanadyl Phthalocyanine Film. Japanese Journal of Applied Physics. 33(11A). L1555–L1555. 24 indexed citations
19.
Fang, Shaoli, Keiichi Kohama, Hajime Hoshi, & Yusei Maruyama. (1994). Epitaxial growth of chloroaluminum phthalocyanine and vanadyl phthalocyanine double-layer structure by molecular beam epitaxy. Synthetic Metals. 64(2-3). 167–170. 7 indexed citations
20.
Hoshi, Hajime, Keiichi Kohama, Shaoli Fang, & Yusei Maruyama. (1993). χ(3) components of single-crystalline vanadyl phthalocyanine film. Applied Physics Letters. 62(24). 3080–3081. 24 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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