Johan Ko

797 total citations
17 papers, 698 citations indexed

About

Johan Ko is a scholar working on Electrical and Electronic Engineering, Renewable Energy, Sustainability and the Environment and Materials Chemistry. According to data from OpenAlex, Johan Ko has authored 17 papers receiving a total of 698 indexed citations (citations by other indexed papers that have themselves been cited), including 14 papers in Electrical and Electronic Engineering, 13 papers in Renewable Energy, Sustainability and the Environment and 7 papers in Materials Chemistry. Recurrent topics in Johan Ko's work include Electrocatalysts for Energy Conversion (13 papers), Fuel Cells and Related Materials (12 papers) and Advanced battery technologies research (7 papers). Johan Ko is often cited by papers focused on Electrocatalysts for Energy Conversion (13 papers), Fuel Cells and Related Materials (12 papers) and Advanced battery technologies research (7 papers). Johan Ko collaborates with scholars based in South Korea. Johan Ko's co-authors include Hyunchul Ju, Haneul Yoo, Whangi Kim, Purushothama Chippar, Kyeongmin Oh, Geonhui Gwak, Youngdon Lim, Hyun-Goo Kang, Dong‐Min Kim and Sei-Hun Yun and has published in prestigious journals such as Journal of Power Sources, Scientific Reports and Applied Energy.

In The Last Decade

Johan Ko

17 papers receiving 678 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Johan Ko South Korea 15 520 372 301 153 113 17 698
Geonhui Gwak South Korea 16 503 1.0× 322 0.9× 262 0.9× 150 1.0× 102 0.9× 24 669
Purushothama Chippar India 18 698 1.3× 575 1.5× 386 1.3× 79 0.5× 105 0.9× 31 853
Yu-Hang Jiao China 9 261 0.5× 128 0.3× 147 0.5× 151 1.0× 93 0.8× 12 423
Asif Ansar Germany 12 312 0.6× 160 0.4× 418 1.4× 34 0.2× 145 1.3× 43 622
Mario Zedda Germany 10 709 1.4× 556 1.5× 234 0.8× 167 1.1× 46 0.4× 12 783
Kyeongmin Oh South Korea 19 893 1.7× 452 1.2× 203 0.7× 401 2.6× 39 0.3× 24 950
Zewei Lyu China 15 290 0.6× 149 0.4× 580 1.9× 49 0.3× 49 0.4× 37 686
Ahrae Jo South Korea 10 340 0.7× 272 0.7× 148 0.5× 49 0.3× 46 0.4× 10 411
Minfang Han China 17 322 0.6× 136 0.4× 528 1.8× 40 0.3× 48 0.4× 60 738
Yuya Tachikawa Japan 19 502 1.0× 255 0.7× 717 2.4× 43 0.3× 30 0.3× 61 897

Countries citing papers authored by Johan Ko

Since Specialization
Citations

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

Fields of papers citing papers by Johan Ko

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Johan Ko

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

All Works

17 of 17 papers shown
1.
Yoo, Haneul, Johan Ko, Kyeongmin Oh, & Hyunchul Ju. (2014). A three dimensional, transient, non-isothermal model of all-vanadium redox flow batteries. 4. 1–6. 3 indexed citations
2.
Gwak, Geonhui, Johan Ko, & Hyunchul Ju. (2014). Effects of porous properties on cold-start behavior of polymer electrolyte fuel cells from sub-zero to normal operating temperatures. Scientific Reports. 4(1). 5770–5770. 4 indexed citations
3.
Gwak, Geonhui, Johan Ko, & Hyunchul Ju. (2014). Numerical investigation of cold-start behavior of polymer-electrolyte fuel-cells from subzero to normal operating temperatures – Effects of cell boundary and operating conditions. International Journal of Hydrogen Energy. 39(36). 21927–21937. 46 indexed citations
4.
Jo, Ahrae, Sung-Ho Lee, Whangi Kim, Johan Ko, & Hyunchul Ju. (2014). Large-scale cold-start simulations for automotive fuel cells. International Journal of Hydrogen Energy. 40(2). 1305–1315. 23 indexed citations
5.
Oh, Kyeongmin, et al.. (2014). Three-dimensional, transient, nonisothermal model of all-vanadium redox flow batteries. Energy. 81. 3–14. 98 indexed citations
6.
Ko, Johan & Hyunchul Ju. (2013). Numerical evaluation of a dual-function microporous layer under subzero and normal operating temperatures for use in automotive fuel cells. International Journal of Hydrogen Energy. 39(6). 2854–2862. 24 indexed citations
7.
Yoo, Haneul, Johan Ko, Sei-Hun Yun, et al.. (2013). A numerical investigation of hydrogen desorption phenomena in ZrCo based hydrogen storage beds. International Journal of Hydrogen Energy. 38(14). 6226–6233. 40 indexed citations
8.
Ko, Johan, et al.. (2013). Effect of design of multilayer electrodes in direct methanol fuel cells (DMFCs). International Journal of Hydrogen Energy. 39(3). 1571–1579. 18 indexed citations
9.
Ko, Johan, Whangi Kim, Youngdon Lim, & Hyunchul Ju. (2012). Improving the cold-start capability of polymer electrolyte fuel cells (PEFCs) by using a dual-function micro-porous layer (MPL): Numerical simulations. International Journal of Hydrogen Energy. 38(1). 652–659. 47 indexed citations
10.
Ko, Johan & Hyunchul Ju. (2012). Comparison of numerical simulation results and experimental data during cold-start of polymer electrolyte fuel cells. Applied Energy. 94. 364–374. 90 indexed citations
11.
Ko, Johan, Whangi Kim, Tae-Whan Hong, Dong‐Min Kim, & Hyunchul Ju. (2012). Impact of metallic bipolar plates on cold-start behaviors of Polymer Electrolyte Fuel Cells (PEFCs). Solid State Ionics. 225. 260–267. 28 indexed citations
12.
Ko, Johan & Hyunchul Ju. (2012). Effects of cathode catalyst layer design parameters on cold start behavior of polymer electrolyte fuel cells (PEFCs). International Journal of Hydrogen Energy. 38(1). 682–691. 53 indexed citations
13.
Yoo, Haneul, Johan Ko, & Hyunchul Ju. (2012). A numerical investigation of hydrogen absorption phenomena in thin double-layered annulus ZrCo beds. International Journal of Hydrogen Energy. 38(18). 7697–7703. 36 indexed citations
14.
Ko, Johan, et al.. (2011). Three-dimensional modeling and simulation of hydrogen absorption in metal hydride hydrogen storage vessels. Applied Energy. 89(1). 164–175. 109 indexed citations
15.
16.
Ko, Johan, et al.. (2010). Comparison of numerical simulation results with experimental current density and methanol-crossover data for direct methanol fuel cells. Journal of Power Sources. 196(3). 935–945. 14 indexed citations
17.
Ko, Johan, Purushothama Chippar, & Hyunchul Ju. (2010). A one-dimensional, two-phase model for direct methanol fuel cells – Part I: Model development and parametric study. Energy. 35(5). 2149–2159. 42 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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