Hiroyasu Takenaka

2.2k total citations · 1 hit paper
27 papers, 1.9k citations indexed

About

Hiroyasu Takenaka is a scholar working on Electrical and Electronic Engineering, Renewable Energy, Sustainability and the Environment and Biomedical Engineering. According to data from OpenAlex, Hiroyasu Takenaka has authored 27 papers receiving a total of 1.9k indexed citations (citations by other indexed papers that have themselves been cited), including 13 papers in Electrical and Electronic Engineering, 8 papers in Renewable Energy, Sustainability and the Environment and 6 papers in Biomedical Engineering. Recurrent topics in Hiroyasu Takenaka's work include Fuel Cells and Related Materials (13 papers), Membrane-based Ion Separation Techniques (6 papers) and Electrocatalysts for Energy Conversion (5 papers). Hiroyasu Takenaka is often cited by papers focused on Fuel Cells and Related Materials (13 papers), Membrane-based Ion Separation Techniques (6 papers) and Electrocatalysts for Energy Conversion (5 papers). Hiroyasu Takenaka collaborates with scholars based in Japan and United States. Hiroyasu Takenaka's co-authors include Minoru Mizuhata, Eiichi Torikai, J. T. Hinatsu, Tetsuo Sakai, Noboru Wakabayashi, Hiroshi Ito, Akihiro Nakano, Tetsuhiko Maeda, Kazuaki Yasuda and Keisuke Oguro and has published in prestigious journals such as SHILAP Revista de lepidopterología, Journal of The Electrochemical Society and Journal of Membrane Science.

In The Last Decade

Hiroyasu Takenaka

26 papers receiving 1.8k citations

Hit Papers

Water Uptake of Perfluorosulfonic Acid Membranes from Liq... 1994 2026 2004 2015 1994 100 200 300 400
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. Water Uptake of Perfluorosulfonic Acid Membranes from Liquid Water and Water Vapor
    1994 425 citations Minoru Mizuhata, Hiroyasu Takenaka et al. Journal of The Electrochemical Society profile →

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Hiroyasu Takenaka Japan 13 1.5k 875 554 414 274 27 1.9k
Pyoungho Choi United States 11 1.1k 0.7× 416 0.5× 487 0.9× 296 0.7× 248 0.9× 20 1.3k
Per Ekdunge Sweden 14 1.5k 1.0× 820 0.9× 376 0.7× 473 1.1× 325 1.2× 18 1.7k
Alessandra Carbone Italy 26 1.5k 1.0× 814 0.9× 472 0.9× 451 1.1× 210 0.8× 76 1.8k
Bryan S. Pivovar United States 24 2.0k 1.3× 1.2k 1.4× 425 0.8× 535 1.3× 343 1.3× 45 2.3k
Frode Seland Norway 30 2.0k 1.3× 1.7k 1.9× 335 0.6× 832 2.0× 163 0.6× 96 2.7k
Alessandro Stassi Italy 30 1.9k 1.3× 1.6k 1.8× 170 0.3× 622 1.5× 281 1.0× 66 2.3k
Yanghua Tang Canada 14 2.8k 1.8× 2.2k 2.5× 478 0.9× 829 2.0× 252 0.9× 16 2.9k
Hyoung‐Juhn Kim South Korea 29 2.0k 1.3× 1.5k 1.7× 439 0.8× 497 1.2× 165 0.6× 53 2.3k
Khalid Fatih Canada 17 1.5k 1.0× 1.1k 1.3× 216 0.4× 437 1.1× 223 0.8× 51 1.7k
Leonard J. Bonville United States 24 2.1k 1.4× 1.5k 1.7× 234 0.4× 591 1.4× 399 1.5× 107 2.4k

Countries citing papers authored by Hiroyasu Takenaka

Since Specialization
Citations

This map shows the geographic impact of Hiroyasu Takenaka'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 Hiroyasu Takenaka with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Hiroyasu Takenaka more than expected).

Fields of papers citing papers by Hiroyasu Takenaka

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Hiroyasu Takenaka. 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 Hiroyasu Takenaka. The network helps show where Hiroyasu Takenaka may publish in the future.

Co-authorship network of co-authors of Hiroyasu Takenaka

This figure shows the co-authorship network connecting the top 25 collaborators of Hiroyasu Takenaka. A scholar is included among the top collaborators of Hiroyasu Takenaka 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 Hiroyasu Takenaka. Hiroyasu Takenaka 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.
Nobuki, Tohru, et al.. (2013). Development of Mg based hydrogen absorbing alloys prepared by mechanical alloying. Journal of Alloys and Compounds. 580. S259–S263. 3 indexed citations
2.
Ioroi, Tsutomu, et al.. (2001). IrO2-deposited Pt electrocatalysts for unitized regenerative polymer electrolyte fuel cells. Journal of Applied Electrochemistry. 31(11). 1179–1183. 83 indexed citations
3.
Ioroi, Tsutomu, et al.. (2000). Iridium Oxide/Platinum Electrocatalysts for Unitized Regenerative Polymer Electrolyte Fuel Cells. Journal of The Electrochemical Society. 147(6). 2018–2018. 157 indexed citations
4.
Murakami, Yukio, Masataka Yamane, Shin‐ichi Wakida, et al.. (1998). Application of Solid Polymer Electrolyte for Treatment of Water Colored by Dyestuffs. Treatment of Orange II.. Journal of Japan Society on Water Environment. 21(1). 47–50. 8 indexed citations
5.
Amine, Khalil, Kazuaki Yasuda, & Hiroyasu Takenaka. (1998). New process for loading highly active platinum on carbon black surface for application in polymer electrolyte fuel cell. Annales de Chimie Science des Matériaux. 23(1-2). 331–335. 15 indexed citations
6.
Takenaka, Hiroyasu. (1996). Energy in 21st Century. The Contribution of Renewable Energy and Hydrogen.. Kobunshi. 45(5). 306–310. 1 indexed citations
7.
Takenaka, Hiroyasu. (1996). Ion Exchange Membranes Used as Solid Polymer Electrolyte and Their Recent Trend of the R&D.. Journal of Ion Exchange. 7(2). 142–152.
8.
Mizuhata, Minoru, et al.. (1996). Dependence of Catalytic Activity of Gas Diffusion Electrode on the Particle Size of Catalyst for PEFCs. Denki Kagaku oyobi Kogyo Butsuri Kagaku. 64(6). 692–698. 7 indexed citations
9.
Takenaka, Hiroyasu. (1995). Polymer Electrolyte Fuel Cell. Kobunshi. 44(2). 80–80. 2 indexed citations
10.
Nishimura, Yasuo, et al.. (1995). Solid polymer electrolyte CO2 reduction. Energy Conversion and Management. 36(6-9). 629–632. 28 indexed citations
11.
Amine, Khalil, Minoru Mizuhata, Keisuke Oguro, & Hiroyasu Takenaka. (1995). Catalytic activity of platinum after exchange with surface active functional groups of carbon blacks. Journal of the Chemical Society Faraday Transactions. 91(24). 4451–4451. 32 indexed citations
12.
Asaka, Kinji, Keisuke Oguro, Yasuo Nishimura, Minoru Mizuhata, & Hiroyasu Takenaka. (1995). Bending of Polyelectrolyte Membrane–Platinum Composites by Electric Stimuli I. Response Characteristics to Various Waveforms. Polymer Journal. 27(4). 436–440. 190 indexed citations
13.
Oguro, Keisuke, et al.. (1994). OH<sup>-</sup>伝導型固体高分子電解質水電解に関する研究 I．槽電圧特性に及ぼす表面粗化とニッケル電極触媒量の影響. Denki Kagaku oyobi Kogyo Butsuri Kagaku. 62(1). 71–77. 1 indexed citations
14.
Takenaka, Hiroyasu. (1991). Development Trends of Hydrogen Production Technology by Water Electrolysis.. Journal of the Fuel Society of Japan. 70(6). 487–496. 3 indexed citations
15.
Sakai, Tetsuo, et al.. (1990). Effects of Surface Roughening of Nafion® on Electrode Plating, Mechanical Strength, and Cell Performances for SPE Water Electrolysis. Journal of The Electrochemical Society. 137(12). 3777–3783. 17 indexed citations
16.
Sakai, Tetsuo, Hiroyasu Takenaka, & Eiichi Torikai. (1986). Gas Diffusion in the Dried and Hydrated Nafions. Journal of The Electrochemical Society. 133(1). 88–92. 189 indexed citations
17.
Sakai, Tetsuo, et al.. (1985). Gas Permeation Properties of Solid Polymer Electrolyte (SPE) Membranes. Journal of The Electrochemical Society. 132(6). 1328–1332. 206 indexed citations
18.
Wakabayashi, Noboru, et al.. (1981). Advanced alkaline water electrolysis. 1. 59–72. 3 indexed citations
19.
Watanabe, Nobuatsu & Hiroyasu Takenaka. (1978). Microscopic Study on Fluorination of Graphite. TANSO. 1978(92). 2–6. 2 indexed citations
20.
Watanabe, Nobuatsu, Hiroyasu Takenaka, & Masayuki Takashima. (1973). Adsorption of Fluorine on Graphite. NIPPON KAGAKU KAISHI. 487–490. 2 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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