Oki Sekizawa

2.0k total citations
81 papers, 1.6k citations indexed

About

Oki Sekizawa is a scholar working on Electrical and Electronic Engineering, Renewable Energy, Sustainability and the Environment and Materials Chemistry. According to data from OpenAlex, Oki Sekizawa has authored 81 papers receiving a total of 1.6k indexed citations (citations by other indexed papers that have themselves been cited), including 54 papers in Electrical and Electronic Engineering, 46 papers in Renewable Energy, Sustainability and the Environment and 29 papers in Materials Chemistry. Recurrent topics in Oki Sekizawa's work include Electrocatalysts for Energy Conversion (46 papers), Fuel Cells and Related Materials (45 papers) and Electrochemical Analysis and Applications (15 papers). Oki Sekizawa is often cited by papers focused on Electrocatalysts for Energy Conversion (46 papers), Fuel Cells and Related Materials (45 papers) and Electrochemical Analysis and Applications (15 papers). Oki Sekizawa collaborates with scholars based in Japan, United States and Thailand. Oki Sekizawa's co-authors include Yasuhiro Iwasawa, Tomoya Uruga, Mizuki Tada, Nozomu Ishiguro, Tomoya Uruga, Kotaro Higashi, Gabor Samjeské, Toshihiko Yokoyama, Shinobu Takao and Kensaku Nagasawa and has published in prestigious journals such as Journal of the American Chemical Society, Angewandte Chemie International Edition and Applied Physics Letters.

In The Last Decade

Oki Sekizawa

79 papers receiving 1.5k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Oki Sekizawa Japan 26 1.1k 1.0k 500 301 117 81 1.6k
Hiroaki Nitani Japan 22 365 0.3× 443 0.4× 731 1.5× 96 0.3× 54 0.5× 75 1.2k
Giorgio Carraro Italy 30 724 0.7× 1.4k 1.4× 1.5k 2.9× 69 0.2× 68 0.6× 86 2.4k
Maryam Farmand United States 13 256 0.2× 387 0.4× 239 0.5× 54 0.2× 153 1.3× 17 864
Osman Karslıoğlu United States 20 249 0.2× 281 0.3× 605 1.2× 117 0.4× 41 0.4× 31 1.1k
Ryan C. Davis United States 19 2.4k 2.3× 3.0k 2.9× 1.0k 2.1× 753 2.5× 27 0.2× 36 3.7k
A. Jeremy Kropf United States 21 673 0.6× 325 0.3× 749 1.5× 46 0.2× 32 0.3× 39 1.4k
Soraya Ababou‐Girard France 23 628 0.6× 379 0.4× 755 1.5× 156 0.5× 12 0.1× 63 1.5k
Rüdiger Szargan Germany 13 305 0.3× 168 0.2× 301 0.6× 168 0.6× 98 0.8× 25 1.1k
William D. Chemelewski United States 17 1.2k 1.1× 1.6k 1.6× 1.6k 3.2× 159 0.5× 12 0.1× 17 2.7k

Countries citing papers authored by Oki Sekizawa

Since Specialization
Citations

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

Fields of papers citing papers by Oki Sekizawa

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Oki Sekizawa

This figure shows the co-authorship network connecting the top 25 collaborators of Oki Sekizawa. A scholar is included among the top collaborators of Oki Sekizawa 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 Oki Sekizawa. Oki Sekizawa 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.
Asaoka, Takahiko, et al.. (2025). <i>Operando</i> X-ray Fluorescence Analysis of Through-plane Cerium Ion Radical Quencher Migration in Polymer Electrolyte Fuel Cells. Electrochemistry. 93(6). 67004–67004. 1 indexed citations
2.
Obata, Keisuke, et al.. (2025). Mass Activity Elucidation of Cobalt‐Based Oxygen Evolution Catalysts Utilizing Depth‐Resolved Spectroscopy in the Presence of Various Cations with Chloride. Angewandte Chemie International Edition. 64(16). e202501579–e202501579. 4 indexed citations
3.
Nakamura, Takashi, Yuta Kimura, Kiyofumi Nitta, et al.. (2025). Operando Evaluation of the Electrochemically Active Area in a Solid Oxide Fuel Cell Porous Electrode by Micro X-ray Absorption Spectroscopy. The Journal of Physical Chemistry Letters. 16(37). 9599–9605.
4.
Kono, Yoshio, Steeve Gréaux, James W. E. Drewitt, et al.. (2024). Pressure-induced polyamorphic transition in CaAl2O4 glass. Physical review. B.. 110(5). 2 indexed citations
5.
Terauchi, Masanori, et al.. (2024). Uranium micro localization in the femur of rats exposed to uranium acetate. Microchemical Journal. 207. 112278–112278.
6.
Nitta, Kiyofumi, Hiroki Suga, & Oki Sekizawa. (2023). Present status of micro-spectroscopy at BL37XU. Radiation Physics and Chemistry. 211. 111028–111028. 6 indexed citations
7.
Yamane, Hiroyuki, Masaki Oura, Daisuke Kawaguchi, et al.. (2023). Depth analysis of local conformation in poly(methyl methacrylate) adsorbed onto SiOx studied by soft X-ray absorption spectroscopy combined with an Ar gas cluster ion beam. Polymer Journal. 56(3). 215–220. 4 indexed citations
8.
9.
Kimura, Yuta, Takashi Nakamura, Nozomu Ishiguro, et al.. (2023). 5D Analysis of Capacity Degradation in Battery Electrodes Enabled by Operando CT‐XANES. Small Methods. 7(10). e2300310–e2300310. 4 indexed citations
10.
Ishiguro, Nozomu, H. Matsui, Oki Sekizawa, et al.. (2023). Oxidation and phase transfer of individual Cr-doped dendritic FeOx particles visualized by full-field nano-XAFS spectroimaging. Physical Chemistry Chemical Physics. 25(26). 17197–17206. 1 indexed citations
11.
Kurihara, Yuichi, Masayoshi Yamamoto, Aya Sakaguchi, et al.. (2020). Characterization of two types of cesium-bearing microparticles emitted from the Fukushima accident via multiple synchrotron radiation analyses. Scientific Reports. 10(1). 11421–11421. 19 indexed citations
12.
Yasui, Akira, et al.. (2020). Investigation of local structures and electronic states of Sb-doped Mg2Si by fluorescence XAFS and HAXPES. Applied Physics Letters. 117(14). 4 indexed citations
13.
Matsui, H., Nozomu Ishiguro, Tomoya Uruga, et al.. (2017). Operando 3D Visualization of Migration and Degradation of a Platinum Cathode Catalyst in a Polymer Electrolyte Fuel Cell. Angewandte Chemie International Edition. 56(32). 9371–9375. 60 indexed citations
14.
Matsui, H., Nozomu Ishiguro, Tomoya Uruga, et al.. (2017). Operando 3D Visualization of Migration and Degradation of a Platinum Cathode Catalyst in a Polymer Electrolyte Fuel Cell. Angewandte Chemie. 129(32). 9499–9503. 6 indexed citations
15.
Samjeské, Gabor, Kotaro Higashi, Shinobu Takao, et al.. (2015). In Situ Techniques to Study the Effects of Anode or Cathode Gas‐Exchange Cycles on the Deterioration of Pt/C Cathode Catalysts in PEFCs. ChemElectroChem. 2(10). 1595–1606. 13 indexed citations
16.
Takao, Shinobu, Oki Sekizawa, Shin‐ichi Nagamatsu, et al.. (2014). Mapping Platinum Species in Polymer Electrolyte Fuel Cells by Spatially Resolved XAFS Techniques. Angewandte Chemie International Edition. 53(51). 14110–14114. 36 indexed citations
17.
Ishiguro, Nozomu, Tomoya Uruga, Oki Sekizawa, et al.. (2014). Visualization of the Heterogeneity of Cerium Oxidation States in Single Pt/Ce2Zr2Ox Catalyst Particles by Nano‐XAFS. ChemPhysChem. 15(8). 1563–1568. 18 indexed citations
18.
Samjeské, Gabor, Shin‐ichi Nagamatsu, Shinobu Takao, et al.. (2013). Performance and characterization of a Pt–Sn(oxidized)/C cathode catalyst with a SnO2-decorated Pt3Sn nanostructure for oxygen reduction reaction in a polymer electrolyte fuel cell. Physical Chemistry Chemical Physics. 15(40). 17208–17208. 37 indexed citations
19.
Nagasawa, Kensaku, Shinobu Takao, Kotaro Higashi, et al.. (2013). Performance and durability of Pt/C cathode catalysts with different kinds of carbons for polymer electrolyte fuel cells characterized by electrochemical and in situ XAFS techniques. Physical Chemistry Chemical Physics. 16(21). 10075–10075. 45 indexed citations
20.
Idemoto, Yasushi, Oki Sekizawa, & Naoto Kitamura. (2011). Composition dependences of Tc, Jc, physical property and crystal structure of Bi1.8Pb0.3Sr2.0Ca0.9Y0.1Cu2.0−xMxOy (M=Zr, Zn) superconducting oxide. Physica C Superconductivity. 471(5-6). 205–212. 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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