Kenji Ukai

470 total citations
18 papers, 389 citations indexed

About

Kenji Ukai is a scholar working on Materials Chemistry, Electrical and Electronic Engineering and Renewable Energy, Sustainability and the Environment. According to data from OpenAlex, Kenji Ukai has authored 18 papers receiving a total of 389 indexed citations (citations by other indexed papers that have themselves been cited), including 14 papers in Materials Chemistry, 8 papers in Electrical and Electronic Engineering and 5 papers in Renewable Energy, Sustainability and the Environment. Recurrent topics in Kenji Ukai's work include Advancements in Solid Oxide Fuel Cells (14 papers), Fuel Cells and Related Materials (7 papers) and Electrocatalysts for Energy Conversion (5 papers). Kenji Ukai is often cited by papers focused on Advancements in Solid Oxide Fuel Cells (14 papers), Fuel Cells and Related Materials (7 papers) and Electrocatalysts for Energy Conversion (5 papers). Kenji Ukai collaborates with scholars based in Japan, United States and Denmark. Kenji Ukai's co-authors include Yasunobu Mizutani, Hirofumi Sumi, Cuié Wen, H. Takahashi, Hidenori Takahashi, O YAMAMOTO, Hiroki Mori, Keiko Waki, Hiroshi Mori and Junichiro Otomo and has published in prestigious journals such as Journal of Power Sources, The Journal of Physical Chemistry C and Journal of the American Ceramic Society.

In The Last Decade

Kenji Ukai

17 papers receiving 376 citations

Peers

Kenji Ukai

CATAL

EEE

RESE

Kipyung Ahn United States

Yosuke Fukuyama Japan

A.‐L. Sauvet France

D. Presvytes Greece

Uttam Doraswami United Kingdom

Yifu Jing China

Junkang Sang China

S.R. Wang China

M SANO Japan

Dirk Herbstritt Germany

Kipyung Ahn United States

Kenji Ukai

507 ×1.4

206 ×1.4

CATAL

134 ×1.2

EEE

94 ×1.1

RESE

64 ×1.1

Citations per year, relative to Kenji Ukai Kenji Ukai (= 1×) peers Kipyung Ahn

Countries citing papers authored by Kenji Ukai

Since Specialization

Citations

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

Fields of papers citing papers by Kenji Ukai

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Kenji Ukai

This figure shows the co-authorship network connecting the top 25 collaborators of Kenji Ukai. A scholar is included among the top collaborators of Kenji Ukai 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 Kenji Ukai. Kenji Ukai is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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18 of 18 papers shown

Björketun, Mårten E., Ivano E. Castelli, Jan Rossmeisl, et al.. (2017). Defect Chemistry and Electrical Conductivity of Sm-Doped La_1–xSr_xCoO_3−δ for Solid Oxide Fuel Cells. The Journal of Physical Chemistry C. 121(28). 15017–15027. 13 indexed citations

Iwamoto, Kunihiko, Kenji Ukai, Hiroki Uehara, et al.. (2014). Advanced 300mm 0.13μm BCD technology from 5V to 80V with highly reliable embedded Flash. 6 indexed citations

Honda, Sawao, et al.. (2009). Strength and Thermal Shock Properties of Scandia-Doped Zirconia for Thin Electrolyte Sheet of Solid Oxide Fuel Cell. MATERIALS TRANSACTIONS. 50(7). 1742–1746. 1 indexed citations

Arai, Hajime, et al.. (2009). 3kW SOFC Power Generation Module Developed by NTT/THG/SPP. ECS Transactions. 25(2). 125–132. 2 indexed citations

Tanaka, Keisuke, et al.. (2008). <i>In Situ </i>Synchrotron Measurement of Internal Stresses in Solid-Oxide Fuel Cell during Red-Ox Cycle. Materials science forum. 571-572. 339–344. 11 indexed citations

Otake, Takanori, et al.. (2007). Effect of GDC Electrolyte Thickness on the Performance of Anode Supported Micro Tubular SOFC. ECS Transactions. 7(1). 551–554. 4 indexed citations

Yamazaki, Hiroshi, et al.. (2007). Development Status of a Planer Type of 1 kW Class SOFC System. ECS Transactions. 7(1). 141–148. 3 indexed citations

Mori, Hiroshi, H. Takahashi, Kenji Ukai, et al.. (2006). Effect of oxide on carbon deposition behavior of CH4 fuel on Ni/ScSZ cermet anode in high temperature SOFCs. Solid State Ionics. 177(5-6). 541–547. 88 indexed citations

Mizutani, Yasunobu, et al.. (2005). From rare earth doped zirconia to 1kW solid oxide fuel cell system. Journal of Alloys and Compounds. 408-412. 518–524. 51 indexed citations

10.

Sumi, Hirofumi, Kenji Ukai, Yasunobu Mizutani, et al.. (2005). Changes of Internal Stress in Solid-Oxide Fuel Cell During Red-Ox Cycle Evaluated by In Situ Measurement With Synchrotron Radiation. Journal of Fuel Cell Science and Technology. 3(1). 68–74. 15 indexed citations

11.

Mizutani, Yasunobu, et al.. (2005). Experiences With the First Japanese-Made Solid-Oxide Fuel-Cell System. Journal of Fuel Cell Science and Technology. 2(3). 179–185. 3 indexed citations

12.

Wen, Cuié, Junichiro Otomo, Takeshi Kobayashi, et al.. (2004). Carbon deposition behaviour on Ni–ScSZ anodes for internal reforming solid oxide fuel cells. Journal of Power Sources. 131(1-2). 285–288. 65 indexed citations

13.

Sumi, Hirofumi, Kenji Ukai, Yasunobu Mizutani, et al.. (2004). Performance of nickel?scandia-stabilized zirconia cermet anodes for SOFCs in 3% HO?CH. Solid State Ionics. 174(1-4). 151–156. 93 indexed citations

14.

Hirano, Masanori, et al.. (2002). Suppression of Rhombohedral‐Phase Appearance and Low‐Temperature Sintering of Scandia‐Doped Cubic‐Zirconia. Journal of the American Ceramic Society. 85(5). 1336–1338. 22 indexed citations

15.

Ukai, Kenji. (2001). Current Status of SOFC Development Using Scandia Doped Zirconia. ECS Proceedings Volumes. 2001-16(1). 375–383. 10 indexed citations

16.

Ukai, Kenji, et al.. (1998). Bias Effect on the Preparation of Iron Nitride Thin Films. Journal of the Magnetics Society of Japan. 22(4_2). 421–424.

17.

Ukai, Kenji, et al.. (1997). Crystal Growth of Calcite Precipitated by Addition of Sodium Chloride Crystal to Calcium Carbonate Intermediate Slurry.. KAGAKU KOGAKU RONBUNSHU. 23(5). 707–712. 1 indexed citations

18.

Kidani, Yoshinori & Kenji Ukai. (1966). Syntheses of Sulfur-containing Phenazine Derivatives. Synthesis of α-and β-Mercaptophenazines. Chemical and Pharmaceutical Bulletin. 14(3). 293–296. 1 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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